{ "mode": "man", "parameter": "FFPROBE", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/FFPROBE/1/json", "generated": "2026-10-20T07:21:30Z", "synopsis": "ffprobe [options] inputurl", "sections": { "NAME": { "content": "ffprobe - ffprobe media prober\n", "subsections": [] }, "SYNOPSIS": { "content": "ffprobe [options] inputurl\n", "subsections": [] }, "DESCRIPTION": { "content": "ffprobe gathers information from multimedia streams and prints it in human- and machine-\nreadable fashion.\n\nFor example it can be used to check the format of the container used by a multimedia stream\nand the format and type of each media stream contained in it.\n\nIf a url is specified in input, ffprobe will try to open and probe the url content. If the\nurl cannot be opened or recognized as a multimedia file, a positive exit code is returned.\n\nIf no output is specified as output with o ffprobe will write to stdout.\n\nffprobe may be employed both as a standalone application or in combination with a textual\nfilter, which may perform more sophisticated processing, e.g. statistical processing or\nplotting.\n\nOptions are used to list some of the formats supported by ffprobe or for specifying which\ninformation to display, and for setting how ffprobe will show it.\n\nffprobe output is designed to be easily parsable by a textual filter, and consists of one or\nmore sections of a form defined by the selected writer, which is specified by the\noutputformat option.\n\nSections may contain other nested sections, and are identified by a name (which may be shared\nby other sections), and an unique name. See the output of sections.\n\nMetadata tags stored in the container or in the streams are recognized and printed in the\ncorresponding \"FORMAT\", \"STREAM\" or \"PROGRAMSTREAM\" section.\n", "subsections": [] }, "OPTIONS": { "content": "All the numerical options, if not specified otherwise, accept a string representing a number\nas input, which may be followed by one of the SI unit prefixes, for example: 'K', 'M', or\n'G'.\n\nIf 'i' is appended to the SI unit prefix, the complete prefix will be interpreted as a unit\nprefix for binary multiples, which are based on powers of 1024 instead of powers of 1000.\nAppending 'B' to the SI unit prefix multiplies the value by 8. This allows using, for\nexample: 'KB', 'MiB', 'G' and 'B' as number suffixes.\n\nOptions which do not take arguments are boolean options, and set the corresponding value to\ntrue. They can be set to false by prefixing the option name with \"no\". For example using\n\"-nofoo\" will set the boolean option with name \"foo\" to false.\n", "subsections": [ { "name": "Stream specifiers", "content": "Some options are applied per-stream, e.g. bitrate or codec. Stream specifiers are used to\nprecisely specify which stream(s) a given option belongs to.\n\nA stream specifier is a string generally appended to the option name and separated from it by\na colon. E.g. \"-codec:a:1 ac3\" contains the \"a:1\" stream specifier, which matches the second\naudio stream. Therefore, it would select the ac3 codec for the second audio stream.\n\nA stream specifier can match several streams, so that the option is applied to all of them.\nE.g. the stream specifier in \"-b:a 128k\" matches all audio streams.\n\nAn empty stream specifier matches all streams. For example, \"-codec copy\" or \"-codec: copy\"\nwould copy all the streams without reencoding.\n\nPossible forms of stream specifiers are:\n\nstreamindex\nMatches the stream with this index. E.g. \"-threads:1 4\" would set the thread count for\nthe second stream to 4. If streamindex is used as an additional stream specifier (see\nbelow), then it selects stream number streamindex from the matching streams. Stream\nnumbering is based on the order of the streams as detected by libavformat except when a\nprogram ID is also specified. In this case it is based on the ordering of the streams in\nthe program.\n\nstreamtype[:additionalstreamspecifier]\nstreamtype is one of following: 'v' or 'V' for video, 'a' for audio, 's' for subtitle,\n'd' for data, and 't' for attachments. 'v' matches all video streams, 'V' only matches\nvideo streams which are not attached pictures, video thumbnails or cover arts. If\nadditionalstreamspecifier is used, then it matches streams which both have this type\nand match the additionalstreamspecifier. Otherwise, it matches all streams of the\nspecified type.\n\np:programid[:additionalstreamspecifier]\nMatches streams which are in the program with the id programid. If\nadditionalstreamspecifier is used, then it matches streams which both are part of the\nprogram and match the additionalstreamspecifier.\n\n#streamid or i:streamid\nMatch the stream by stream id (e.g. PID in MPEG-TS container).\n\nm:key[:value]\nMatches streams with the metadata tag key having the specified value. If value is not\ngiven, matches streams that contain the given tag with any value.\n\nu Matches streams with usable configuration, the codec must be defined and the essential\ninformation such as video dimension or audio sample rate must be present.\n\nNote that in ffmpeg, matching by metadata will only work properly for input files.\n" }, { "name": "Generic options", "content": "These options are shared amongst the ff* tools.\n" }, { "name": "-L", "content": "", "flag": "-L" }, { "name": "-h, -?, -help, --help [_", "content": "Show help. An optional parameter may be specified to print help about a specific item. If\nno argument is specified, only basic (non advanced) tool options are shown.\n\nPossible values of arg are:\n\nlong\nPrint advanced tool options in addition to the basic tool options.\n\nfull\nPrint complete list of options, including shared and private options for encoders,\ndecoders, demuxers, muxers, filters, etc.\n\ndecoder=decodername\nPrint detailed information about the decoder named decodername. Use the -decoders\noption to get a list of all decoders.\n\nencoder=encodername\nPrint detailed information about the encoder named encodername. Use the -encoders\noption to get a list of all encoders.\n\ndemuxer=demuxername\nPrint detailed information about the demuxer named demuxername. Use the -formats\noption to get a list of all demuxers and muxers.\n\nmuxer=muxername\nPrint detailed information about the muxer named muxername. Use the -formats option\nto get a list of all muxers and demuxers.\n\nfilter=filtername\nPrint detailed information about the filter named filtername. Use the -filters\noption to get a list of all filters.\n\nbsf=bitstreamfiltername\nPrint detailed information about the bitstream filter named bitstreamfiltername.\nUse the -bsfs option to get a list of all bitstream filters.\n\nprotocol=protocolname\nPrint detailed information about the protocol named protocolname. Use the\n-protocols option to get a list of all protocols.\n", "flag": "-?", "long": "--help" }, { "name": "-version", "content": "Show version.\n" }, { "name": "-buildconf", "content": "Show the build configuration, one option per line.\n" }, { "name": "-formats", "content": "Show available formats (including devices).\n" }, { "name": "-demuxers", "content": "Show available demuxers.\n" }, { "name": "-muxers", "content": "Show available muxers.\n" }, { "name": "-devices", "content": "Show available devices.\n" }, { "name": "-codecs", "content": "Show all codecs known to libavcodec.\n\nNote that the term 'codec' is used throughout this documentation as a shortcut for what\nis more correctly called a media bitstream format.\n" }, { "name": "-decoders", "content": "Show available decoders.\n" }, { "name": "-encoders", "content": "Show all available encoders.\n" }, { "name": "-bsfs", "content": "Show available bitstream filters.\n" }, { "name": "-protocols", "content": "Show available protocols.\n" }, { "name": "-filters", "content": "Show available libavfilter filters.\n" }, { "name": "-pix_fmts", "content": "Show available pixel formats.\n" }, { "name": "-sample_fmts", "content": "Show available sample formats.\n" }, { "name": "-layouts", "content": "Show channel names and standard channel layouts.\n" }, { "name": "-dispositions", "content": "Show stream dispositions.\n" }, { "name": "-colors", "content": "Show recognized color names.\n" }, { "name": "-sources _", "content": "Show autodetected sources of the input device. Some devices may provide system-dependent\nsource names that cannot be autodetected. The returned list cannot be assumed to be\nalways complete.\n\nffmpeg -sources pulse,server=192.168.0.4\n" }, { "name": "-sinks _", "content": "Show autodetected sinks of the output device. Some devices may provide system-dependent\nsink names that cannot be autodetected. The returned list cannot be assumed to be always\ncomplete.\n\nffmpeg -sinks pulse,server=192.168.0.4\n" }, { "name": "-loglevel [_", "content": "Set logging level and flags used by the library.\n\nThe optional flags prefix can consist of the following values:\n\nrepeat\nIndicates that repeated log output should not be compressed to the first line and the\n\"Last message repeated n times\" line will be omitted.\n\nlevel\nIndicates that log output should add a \"[level]\" prefix to each message line. This\ncan be used as an alternative to log coloring, e.g. when dumping the log to file.\n\nFlags can also be used alone by adding a '+'/'-' prefix to set/reset a single flag\nwithout affecting other flags or changing loglevel. When setting both flags and loglevel,\na '+' separator is expected between the last flags value and before loglevel.\n\nloglevel is a string or a number containing one of the following values:\n\nquiet, -8\nShow nothing at all; be silent.\n\npanic, 0\nOnly show fatal errors which could lead the process to crash, such as an assertion\nfailure. This is not currently used for anything.\n\nfatal, 8\nOnly show fatal errors. These are errors after which the process absolutely cannot\ncontinue.\n\nerror, 16\nShow all errors, including ones which can be recovered from.\n\nwarning, 24\nShow all warnings and errors. Any message related to possibly incorrect or unexpected\nevents will be shown.\n\ninfo, 32\nShow informative messages during processing. This is in addition to warnings and\nerrors. This is the default value.\n\nverbose, 40\nSame as \"info\", except more verbose.\n\ndebug, 48\nShow everything, including debugging information.\n\ntrace, 56\n\nFor example to enable repeated log output, add the \"level\" prefix, and set loglevel to\n\"verbose\":\n\nffmpeg -loglevel repeat+level+verbose -i input output\n\nAnother example that enables repeated log output without affecting current state of\n\"level\" prefix flag or loglevel:\n\nffmpeg [...] -loglevel +repeat\n\nBy default the program logs to stderr. If coloring is supported by the terminal, colors\nare used to mark errors and warnings. Log coloring can be disabled setting the\nenvironment variable AVLOGFORCENOCOLOR, or can be forced setting the environment\nvariable AVLOGFORCECOLOR.\n" }, { "name": "-report", "content": "Dump full command line and log output to a file named \"program-YYYYMMDD-HHMMSS.log\" in\nthe current directory. This file can be useful for bug reports. It also implies\n\"-loglevel debug\".\n\nSetting the environment variable FFREPORT to any value has the same effect. If the value\nis a ':'-separated key=value sequence, these options will affect the report; option\nvalues must be escaped if they contain special characters or the options delimiter ':'\n(see the ``Quoting and escaping'' section in the ffmpeg-utils manual).\n\nThe following options are recognized:\n\nfile\nset the file name to use for the report; %p is expanded to the name of the program,\n%t is expanded to a timestamp, \"%%\" is expanded to a plain \"%\"\n\nlevel\nset the log verbosity level using a numerical value (see \"-loglevel\").\n\nFor example, to output a report to a file named ffreport.log using a log level of 32\n(alias for log level \"info\"):\n\nFFREPORT=file=ffreport.log:level=32 ffmpeg -i input output\n\nErrors in parsing the environment variable are not fatal, and will not appear in the\nreport.\n" }, { "name": "-hide_banner", "content": "Suppress printing banner.\n\nAll FFmpeg tools will normally show a copyright notice, build options and library\nversions. This option can be used to suppress printing this information.\n" }, { "name": "-cpuflags flags (_", "content": "Allows setting and clearing cpu flags. This option is intended for testing. Do not use it\nunless you know what you're doing.\n\nffmpeg -cpuflags -sse+mmx ...\nffmpeg -cpuflags mmx ...\nffmpeg -cpuflags 0 ...\n\nPossible flags for this option are:\n\nx86\nmmx\nmmxext\nsse\nsse2\nsse2slow\nsse3\nsse3slow\nssse3\natom\nsse4.1\nsse4.2\navx\navx2\nxop\nfma3\nfma4\n3dnow\n3dnowext\nbmi1\nbmi2\ncmov\nARM\narmv5te\narmv6\narmv6t2\nvfp\nvfpv3\nneon\nsetend\nAArch64\narmv8\nvfp\nneon\nPowerPC\naltivec\nSpecific Processors\npentium2\npentium3\npentium4\nk6\nk62\nathlon\nathlonxp\nk8" }, { "name": "-cpucount _", "content": "Override detection of CPU count. This option is intended for testing. Do not use it\nunless you know what you're doing.\n\nffmpeg -cpucount 2\n" }, { "name": "-max_alloc _", "content": "Set the maximum size limit for allocating a block on the heap by ffmpeg's family of\nmalloc functions. Exercise extreme caution when using this option. Don't use if you do\nnot understand the full consequence of doing so. Default is INTMAX.\n" }, { "name": "AVOptions", "content": "These options are provided directly by the libavformat, libavdevice and libavcodec libraries.\nTo see the list of available AVOptions, use the -help option. They are separated into two\ncategories:\n" }, { "name": "generic", "content": "These options can be set for any container, codec or device. Generic options are listed\nunder AVFormatContext options for containers/devices and under AVCodecContext options for\ncodecs.\n" }, { "name": "private", "content": "These options are specific to the given container, device or codec. Private options are\nlisted under their corresponding containers/devices/codecs.\n\nFor example to write an ID3v2.3 header instead of a default ID3v2.4 to an MP3 file, use the\nid3v2version private option of the MP3 muxer:\n\nffmpeg -i input.flac -id3v2version 3 out.mp3\n\nAll codec AVOptions are per-stream, and thus a stream specifier should be attached to them:\n\nffmpeg -i multichannel.mxf -map 0:v:0 -map 0:a:0 -map 0:a:0 -c:a:0 ac3 -b:a:0 640k -ac:a:1 2 -c:a:1 aac -b:2 128k out.mp4\n\nIn the above example, a multichannel audio stream is mapped twice for output. The first\ninstance is encoded with codec ac3 and bitrate 640k. The second instance is downmixed to 2\nchannels and encoded with codec aac. A bitrate of 128k is specified for it using absolute\nindex of the output stream.\n\nNote: the -nooption syntax cannot be used for boolean AVOptions, use -option 0/-option 1.\n\nNote: the old undocumented way of specifying per-stream AVOptions by prepending v/a/s to the\noptions name is now obsolete and will be removed soon.\n" }, { "name": "Main options", "content": "" }, { "name": "-f _", "content": "Force format to use.\n", "flag": "-f" }, { "name": "-unit", "content": "Show the unit of the displayed values.\n" }, { "name": "-prefix", "content": "Use SI prefixes for the displayed values. Unless the \"-bytebinaryprefix\" option is\nused all the prefixes are decimal.\n" }, { "name": "-byte_binary_prefix", "content": "Force the use of binary prefixes for byte values.\n" }, { "name": "-sexagesimal", "content": "Use sexagesimal format HH:MM:SS.MICROSECONDS for time values.\n" }, { "name": "-pretty", "content": "Prettify the format of the displayed values, it corresponds to the options \"-unit -prefix\n-bytebinaryprefix -sexagesimal\".\n" }, { "name": "-output_format, -of, -print_format _", "content": "Set the output printing format.\n\nwritername specifies the name of the writer, and writeroptions specifies the options to\nbe passed to the writer.\n\nFor example for printing the output in JSON format, specify:\n\n-outputformat json\n\nFor more details on the available output printing formats, see the Writers section below.\n" }, { "name": "-sections", "content": "Print sections structure and section information, and exit. The output is not meant to be\nparsed by a machine.\n" }, { "name": "-select_streams _", "content": "Select only the streams specified by streamspecifier. This option affects only the\noptions related to streams (e.g. \"showstreams\", \"showpackets\", etc.).\n\nFor example to show only audio streams, you can use the command:\n\nffprobe -showstreams -selectstreams a INPUT\n\nTo show only video packets belonging to the video stream with index 1:\n\nffprobe -showpackets -selectstreams v:1 INPUT\n" }, { "name": "-show_data", "content": "Show payload data, as a hexadecimal and ASCII dump. Coupled with -showpackets, it will\ndump the packets' data. Coupled with -showstreams, it will dump the codec extradata.\n\nThe dump is printed as the \"data\" field. It may contain newlines.\n" }, { "name": "-show_data_hash _", "content": "Show a hash of payload data, for packets with -showpackets and for codec extradata with\n-showstreams.\n" }, { "name": "-show_error", "content": "Show information about the error found when trying to probe the input.\n\nThe error information is printed within a section with name \"ERROR\".\n" }, { "name": "-show_format", "content": "Show information about the container format of the input multimedia stream.\n\nAll the container format information is printed within a section with name \"FORMAT\".\n" }, { "name": "-show_format_entry _", "content": "Like -showformat, but only prints the specified entry of the container format\ninformation, rather than all. This option may be given more than once, then all specified\nentries will be shown.\n\nThis option is deprecated, use \"showentries\" instead.\n" }, { "name": "-show_entries _", "content": "Set list of entries to show.\n\nEntries are specified according to the following syntax. sectionentries contains a list\nof section entries separated by \":\". Each section entry is composed by a section name (or\nunique name), optionally followed by a list of entries local to that section, separated\nby \",\".\n\nIf section name is specified but is followed by no \"=\", all entries are printed to\noutput, together with all the contained sections. Otherwise only the entries specified in\nthe local section entries list are printed. In particular, if \"=\" is specified but the\nlist of local entries is empty, then no entries will be shown for that section.\n\nNote that the order of specification of the local section entries is not honored in the\noutput, and the usual display order will be retained.\n\nThe formal syntax is given by:\n\n ::= [,]\n ::= [=[]]\n ::= [:]\n\nFor example, to show only the index and type of each stream, and the PTS time, duration\ntime, and stream index of the packets, you can specify the argument:\n\npacket=ptstime,durationtime,streamindex : stream=index,codectype\n\nTo show all the entries in the section \"format\", but only the codec type in the section\n\"stream\", specify the argument:\n\nformat : stream=codectype\n\nTo show all the tags in the stream and format sections:\n\nstreamtags : formattags\n\nTo show only the \"title\" tag (if available) in the stream sections:\n\nstreamtags=title\n" }, { "name": "-show_packets", "content": "Show information about each packet contained in the input multimedia stream.\n\nThe information for each single packet is printed within a dedicated section with name\n\"PACKET\".\n" }, { "name": "-show_frames", "content": "Show information about each frame and subtitle contained in the input multimedia stream.\n\nThe information for each single frame is printed within a dedicated section with name\n\"FRAME\" or \"SUBTITLE\".\n" }, { "name": "-show_log _", "content": "Show logging information from the decoder about each frame according to the value set in\nloglevel, (see \"-loglevel\"). This option requires \"-showframes\".\n\nThe information for each log message is printed within a dedicated section with name\n\"LOG\".\n" }, { "name": "-show_streams", "content": "Show information about each media stream contained in the input multimedia stream.\n\nEach media stream information is printed within a dedicated section with name \"STREAM\".\n" }, { "name": "-show_programs", "content": "Show information about programs and their streams contained in the input multimedia\nstream.\n\nEach media stream information is printed within a dedicated section with name\n\"PROGRAMSTREAM\".\n" }, { "name": "-show_chapters", "content": "Show information about chapters stored in the format.\n\nEach chapter is printed within a dedicated section with name \"CHAPTER\".\n" }, { "name": "-count_frames", "content": "Count the number of frames per stream and report it in the corresponding stream section.\n" }, { "name": "-count_packets", "content": "Count the number of packets per stream and report it in the corresponding stream section.\n" }, { "name": "-read_intervals _", "content": "Read only the specified intervals. readintervals must be a sequence of interval\nspecifications separated by \",\". ffprobe will seek to the interval starting point, and\nwill continue reading from that.\n\nEach interval is specified by two optional parts, separated by \"%\".\n\nThe first part specifies the interval start position. It is interpreted as an absolute\nposition, or as a relative offset from the current position if it is preceded by the \"+\"\ncharacter. If this first part is not specified, no seeking will be performed when reading\nthis interval.\n\nThe second part specifies the interval end position. It is interpreted as an absolute\nposition, or as a relative offset from the current position if it is preceded by the \"+\"\ncharacter. If the offset specification starts with \"#\", it is interpreted as the number\nof packets to read (not including the flushing packets) from the interval start. If no\nsecond part is specified, the program will read until the end of the input.\n\nNote that seeking is not accurate, thus the actual interval start point may be different\nfrom the specified position. Also, when an interval duration is specified, the absolute\nend time will be computed by adding the duration to the interval start point found by\nseeking the file, rather than to the specified start value.\n\nThe formal syntax is given by:\n\n ::= [|+][%[|+]]\n ::= [,]\n\nA few examples follow.\n\n• Seek to time 10, read packets until 20 seconds after the found seek point, then seek\nto position \"01:30\" (1 minute and thirty seconds) and read packets until position\n\"01:45\".\n\n10%+20,01:30%01:45\n\n• Read only 42 packets after seeking to position \"01:23\":\n\n01:23%+#42\n\n• Read only the first 20 seconds from the start:\n\n%+20\n\n• Read from the start until position \"02:30\":\n\n%02:30\n" }, { "name": "-show_private_data, -private", "content": "Show private data, that is data depending on the format of the particular shown element.\nThis option is enabled by default, but you may need to disable it for specific uses, for\nexample when creating XSD-compliant XML output.\n" }, { "name": "-show_program_version", "content": "Show information related to program version.\n\nVersion information is printed within a section with name \"PROGRAMVERSION\".\n" }, { "name": "-show_library_versions", "content": "Show information related to library versions.\n\nVersion information for each library is printed within a section with name\n\"LIBRARYVERSION\".\n" }, { "name": "-show_versions", "content": "Show information related to program and library versions. This is the equivalent of\nsetting both -showprogramversion and -showlibraryversions options.\n" }, { "name": "-show_pixel_formats", "content": "Show information about all pixel formats supported by FFmpeg.\n\nPixel format information for each format is printed within a section with name\n\"PIXELFORMAT\".\n" }, { "name": "-show_optional_fields _", "content": "Some writers viz. JSON and XML, omit the printing of fields with invalid or non-\napplicable values, while other writers always print them. This option enables one to\ncontrol this behaviour. Valid values are \"always\"/1, \"never\"/0 and \"auto\"/-1. Default\nis auto.\n" }, { "name": "-bitexact", "content": "Force bitexact output, useful to produce output which is not dependent on the specific\nbuild.\n" }, { "name": "-i _", "content": "Read inputurl.\n", "flag": "-i" }, { "name": "-o _", "content": "Write output to outputurl. If not specified, the output is sent to stdout.\n", "flag": "-o" } ] }, "WRITERS": { "content": "A writer defines the output format adopted by ffprobe, and will be used for printing all the\nparts of the output.\n\nA writer may accept one or more arguments, which specify the options to adopt. The options\nare specified as a list of key=value pairs, separated by \":\".\n\nAll writers support the following options:\n", "subsections": [ { "name": "string_validation, sv", "content": "Set string validation mode.\n\nThe following values are accepted.\n\nfail\nThe writer will fail immediately in case an invalid string (UTF-8) sequence or code\npoint is found in the input. This is especially useful to validate input metadata.\n\nignore\nAny validation error will be ignored. This will result in possibly broken output,\nespecially with the json or xml writer.\n\nreplace\nThe writer will substitute invalid UTF-8 sequences or code points with the string\nspecified with the stringvalidationreplacement.\n\nDefault value is replace.\n" }, { "name": "string_validation_replacement, svr", "content": "Set replacement string to use in case stringvalidation is set to replace.\n\nIn case the option is not specified, the writer will assume the empty string, that is it\nwill remove the invalid sequences from the input strings.\n\nA description of the currently available writers follows.\n" }, { "name": "default", "content": "Default format.\n\nPrint each section in the form:\n\n[SECTION]\nkey1=val1\n...\nkeyN=valN\n[/SECTION]\n\nMetadata tags are printed as a line in the corresponding FORMAT, STREAM or PROGRAMSTREAM\nsection, and are prefixed by the string \"TAG:\".\n\nA description of the accepted options follows.\n" }, { "name": "nokey, nk", "content": "If set to 1 specify not to print the key of each field. Default value is 0.\n" }, { "name": "noprint_wrappers, nw", "content": "If set to 1 specify not to print the section header and footer. Default value is 0.\n" }, { "name": "compact, csv", "content": "Compact and CSV format.\n\nThe \"csv\" writer is equivalent to \"compact\", but supports different defaults.\n\nEach section is printed on a single line. If no option is specified, the output has the\nform:\n\nsection|key1=val1| ... |keyN=valN\n\nMetadata tags are printed in the corresponding \"format\" or \"stream\" section. A metadata tag\nkey, if printed, is prefixed by the string \"tag:\".\n\nThe description of the accepted options follows.\n" }, { "name": "item_sep, s", "content": "Specify the character to use for separating fields in the output line. It must be a\nsingle printable character, it is \"|\" by default (\",\" for the \"csv\" writer).\n" }, { "name": "nokey, nk", "content": "If set to 1 specify not to print the key of each field. Its default value is 0 (1 for the\n\"csv\" writer).\n" }, { "name": "escape, e", "content": "Set the escape mode to use, default to \"c\" (\"csv\" for the \"csv\" writer).\n\nIt can assume one of the following values:\n\nc Perform C-like escaping. Strings containing a newline (\\n), carriage return (\\r), a\ntab (\\t), a form feed (\\f), the escaping character (\\) or the item separator\ncharacter SEP are escaped using C-like fashioned escaping, so that a newline is\nconverted to the sequence \\n, a carriage return to \\r, \\ to \\\\ and the separator SEP\nis converted to \\SEP.\n\ncsv Perform CSV-like escaping, as described in RFC4180. Strings containing a newline\n(\\n), a carriage return (\\r), a double quote (\"), or SEP are enclosed in double-\nquotes.\n\nnone\nPerform no escaping.\n" }, { "name": "print_section, p", "content": "Print the section name at the beginning of each line if the value is 1, disable it with\nvalue set to 0. Default value is 1.\n" }, { "name": "flat", "content": "Flat format.\n\nA free-form output where each line contains an explicit key=value, such as\n\"streams.stream.3.tags.foo=bar\". The output is shell escaped, so it can be directly embedded\nin sh scripts as long as the separator character is an alphanumeric character or an\nunderscore (see sepchar option).\n\nThe description of the accepted options follows.\n" }, { "name": "sep_char, s", "content": "Separator character used to separate the chapter, the section name, IDs and potential\ntags in the printed field key.\n\nDefault value is ..\n" }, { "name": "hierarchical, h", "content": "Specify if the section name specification should be hierarchical. If set to 1, and if\nthere is more than one section in the current chapter, the section name will be prefixed\nby the name of the chapter. A value of 0 will disable this behavior.\n\nDefault value is 1.\n" }, { "name": "ini", "content": "INI format output.\n\nPrint output in an INI based format.\n\nThe following conventions are adopted:\n\n• all key and values are UTF-8\n\n• . is the subgroup separator\n\n• newline, \\t, \\f, \\b and the following characters are escaped\n\n• \\ is the escape character\n\n• # is the comment indicator\n\n• = is the key/value separator\n\n• : is not used but usually parsed as key/value separator\n\nThis writer accepts options as a list of key=value pairs, separated by :.\n\nThe description of the accepted options follows.\n" }, { "name": "hierarchical, h", "content": "Specify if the section name specification should be hierarchical. If set to 1, and if\nthere is more than one section in the current chapter, the section name will be prefixed\nby the name of the chapter. A value of 0 will disable this behavior.\n\nDefault value is 1.\n" }, { "name": "json", "content": "JSON based format.\n\nEach section is printed using JSON notation.\n\nThe description of the accepted options follows.\n" }, { "name": "compact, c", "content": "If set to 1 enable compact output, that is each section will be printed on a single line.\nDefault value is 0.\n\nFor more information about JSON, see .\n" }, { "name": "xml", "content": "XML based format.\n\nThe XML output is described in the XML schema description file ffprobe.xsd installed in the\nFFmpeg datadir.\n\nAn updated version of the schema can be retrieved at the url\n, which redirects to the latest schema committed\ninto the FFmpeg development source code tree.\n\nNote that the output issued will be compliant to the ffprobe.xsd schema only when no special\nglobal output options (unit, prefix, bytebinaryprefix, sexagesimal etc.) are specified.\n\nThe description of the accepted options follows.\n" }, { "name": "fully_qualified, q", "content": "If set to 1 specify if the output should be fully qualified. Default value is 0. This is\nrequired for generating an XML file which can be validated through an XSD file.\n" }, { "name": "xsd_strict, x", "content": "If set to 1 perform more checks for ensuring that the output is XSD compliant. Default\nvalue is 0. This option automatically sets fullyqualified to 1.\n\nFor more information about the XML format, see .\n" } ] }, "TIMECODE": { "content": "ffprobe supports Timecode extraction:\n\n• MPEG1/2 timecode is extracted from the GOP, and is available in the video stream details\n(-showstreams, see timecode).\n\n• MOV timecode is extracted from tmcd track, so is available in the tmcd stream metadata\n(-showstreams, see TAG:timecode).\n\n• DV, GXF and AVI timecodes are available in format metadata (-showformat, see\nTAG:timecode).\n", "subsections": [] }, "SEE ALSO": { "content": "ffprobe-all(1), ffmpeg(1), ffplay(1), ffmpeg-utils(1), ffmpeg-scaler(1), ffmpeg-resampler(1),\nffmpeg-codecs(1), ffmpeg-bitstream-filters(1), ffmpeg-formats(1), ffmpeg-devices(1),\nffmpeg-protocols(1), ffmpeg-filters(1)\n", "subsections": [] }, "AUTHORS": { "content": "The FFmpeg developers.\n\nFor details about the authorship, see the Git history of the project\n(https://git.ffmpeg.org/ffmpeg), e.g. by typing the command git log in the FFmpeg source\ndirectory, or browsing the online repository at .\n\nMaintainers for the specific components are listed in the file MAINTAINERS in the source code\ntree.\n\nFFPROBE(1)", "subsections": [] } }, "summary": "ffprobe - ffprobe media prober", "flags": [ { "flag": "-L", "long": null, "arg": null, "description": "" }, { "flag": "-?", "long": "--help", "arg": null, "description": "Show help. An optional parameter may be specified to print help about a specific item. If no argument is specified, only basic (non advanced) tool options are shown. Possible values of arg are: long Print advanced tool options in addition to the basic tool options. full Print complete list of options, including shared and private options for encoders, decoders, demuxers, muxers, filters, etc. decoder=decodername Print detailed information about the decoder named decodername. Use the -decoders option to get a list of all decoders. encoder=encodername Print detailed information about the encoder named encodername. Use the -encoders option to get a list of all encoders. demuxer=demuxername Print detailed information about the demuxer named demuxername. Use the -formats option to get a list of all demuxers and muxers. muxer=muxername Print detailed information about the muxer named muxername. Use the -formats option to get a list of all muxers and demuxers. filter=filtername Print detailed information about the filter named filtername. Use the -filters option to get a list of all filters. bsf=bitstreamfiltername Print detailed information about the bitstream filter named bitstreamfiltername. Use the -bsfs option to get a list of all bitstream filters. protocol=protocolname Print detailed information about the protocol named protocolname. Use the -protocols option to get a list of all protocols." }, { "flag": "", "long": null, "arg": null, "description": "Show version." }, { "flag": "", "long": null, "arg": null, "description": "Show the build configuration, one option per line." }, { "flag": "", "long": null, "arg": null, "description": "Show available formats (including devices)." }, { "flag": "", "long": null, "arg": null, "description": "Show available demuxers." }, { "flag": "", "long": null, "arg": null, "description": "Show available muxers." }, { "flag": "", "long": null, "arg": null, "description": "Show available devices." }, { "flag": "", "long": null, "arg": null, "description": "Show all codecs known to libavcodec. Note that the term 'codec' is used throughout this documentation as a shortcut for what is more correctly called a media bitstream format." }, { "flag": "", "long": null, "arg": null, "description": "Show available decoders." }, { "flag": "", "long": null, "arg": null, "description": "Show all available encoders." }, { "flag": "", "long": null, "arg": null, "description": "Show available bitstream filters." }, { "flag": "", "long": null, "arg": null, "description": "Show available protocols." }, { "flag": "", "long": null, "arg": null, "description": "Show available libavfilter filters." }, { "flag": "", "long": null, "arg": null, "description": "Show available pixel formats." }, { "flag": "", "long": null, "arg": null, "description": "Show available sample formats." }, { "flag": "", "long": null, "arg": null, "description": "Show channel names and standard channel layouts." }, { "flag": "", "long": null, "arg": null, "description": "Show stream dispositions." }, { "flag": "", "long": null, "arg": null, "description": "Show recognized color names." }, { "flag": "", "long": null, "arg": null, "description": "Show autodetected sources of the input device. Some devices may provide system-dependent source names that cannot be autodetected. The returned list cannot be assumed to be always complete. ffmpeg -sources pulse,server=192.168.0.4" }, { "flag": "", "long": null, "arg": null, "description": "Show autodetected sinks of the output device. Some devices may provide system-dependent sink names that cannot be autodetected. The returned list cannot be assumed to be always complete. ffmpeg -sinks pulse,server=192.168.0.4" }, { "flag": "", "long": null, "arg": null, "description": "Set logging level and flags used by the library. The optional flags prefix can consist of the following values: repeat Indicates that repeated log output should not be compressed to the first line and the \"Last message repeated n times\" line will be omitted. level Indicates that log output should add a \"[level]\" prefix to each message line. This can be used as an alternative to log coloring, e.g. when dumping the log to file. Flags can also be used alone by adding a '+'/'-' prefix to set/reset a single flag without affecting other flags or changing loglevel. When setting both flags and loglevel, a '+' separator is expected between the last flags value and before loglevel. loglevel is a string or a number containing one of the following values: quiet, -8 Show nothing at all; be silent. panic, 0 Only show fatal errors which could lead the process to crash, such as an assertion failure. This is not currently used for anything. fatal, 8 Only show fatal errors. These are errors after which the process absolutely cannot continue. error, 16 Show all errors, including ones which can be recovered from. warning, 24 Show all warnings and errors. Any message related to possibly incorrect or unexpected events will be shown. info, 32 Show informative messages during processing. This is in addition to warnings and errors. This is the default value. verbose, 40 Same as \"info\", except more verbose. debug, 48 Show everything, including debugging information. trace, 56 For example to enable repeated log output, add the \"level\" prefix, and set loglevel to \"verbose\": ffmpeg -loglevel repeat+level+verbose -i input output Another example that enables repeated log output without affecting current state of \"level\" prefix flag or loglevel: ffmpeg [...] -loglevel +repeat By default the program logs to stderr. If coloring is supported by the terminal, colors are used to mark errors and warnings. Log coloring can be disabled setting the environment variable AVLOGFORCENOCOLOR, or can be forced setting the environment variable AVLOGFORCECOLOR." }, { "flag": "", "long": null, "arg": null, "description": "Dump full command line and log output to a file named \"program-YYYYMMDD-HHMMSS.log\" in the current directory. This file can be useful for bug reports. It also implies \"-loglevel debug\". Setting the environment variable FFREPORT to any value has the same effect. If the value is a ':'-separated key=value sequence, these options will affect the report; option values must be escaped if they contain special characters or the options delimiter ':' (see the ``Quoting and escaping'' section in the ffmpeg-utils manual). The following options are recognized: file set the file name to use for the report; %p is expanded to the name of the program, %t is expanded to a timestamp, \"%%\" is expanded to a plain \"%\" level set the log verbosity level using a numerical value (see \"-loglevel\"). For example, to output a report to a file named ffreport.log using a log level of 32 (alias for log level \"info\"): FFREPORT=file=ffreport.log:level=32 ffmpeg -i input output Errors in parsing the environment variable are not fatal, and will not appear in the report." }, { "flag": "", "long": null, "arg": null, "description": "Suppress printing banner. All FFmpeg tools will normally show a copyright notice, build options and library versions. This option can be used to suppress printing this information." }, { "flag": "", "long": null, "arg": null, "description": "Allows setting and clearing cpu flags. This option is intended for testing. Do not use it unless you know what you're doing. ffmpeg -cpuflags -sse+mmx ... ffmpeg -cpuflags mmx ... ffmpeg -cpuflags 0 ... Possible flags for this option are: x86 mmx mmxext sse sse2 sse2slow sse3 sse3slow ssse3 atom sse4.1 sse4.2 avx avx2 xop fma3 fma4 3dnow 3dnowext bmi1 bmi2 cmov ARM armv5te armv6 armv6t2 vfp vfpv3 neon setend AArch64 armv8 vfp neon PowerPC altivec Specific Processors pentium2 pentium3 pentium4 k6 k62 athlon athlonxp k8" }, { "flag": "", "long": null, "arg": null, "description": "Override detection of CPU count. This option is intended for testing. Do not use it unless you know what you're doing. ffmpeg -cpucount 2" }, { "flag": "", "long": null, "arg": null, "description": "Set the maximum size limit for allocating a block on the heap by ffmpeg's family of malloc functions. Exercise extreme caution when using this option. Don't use if you do not understand the full consequence of doing so. Default is INTMAX." }, { "flag": "-f", "long": null, "arg": null, "description": "Force format to use." }, { "flag": "", "long": null, "arg": null, "description": "Show the unit of the displayed values." }, { "flag": "", "long": null, "arg": null, "description": "Use SI prefixes for the displayed values. Unless the \"-bytebinaryprefix\" option is used all the prefixes are decimal." }, { "flag": "", "long": null, "arg": null, "description": "Force the use of binary prefixes for byte values." }, { "flag": "", "long": null, "arg": null, "description": "Use sexagesimal format HH:MM:SS.MICROSECONDS for time values." }, { "flag": "", "long": null, "arg": null, "description": "Prettify the format of the displayed values, it corresponds to the options \"-unit -prefix -bytebinaryprefix -sexagesimal\"." }, { "flag": "", "long": null, "arg": null, "description": "Set the output printing format. writername specifies the name of the writer, and writeroptions specifies the options to be passed to the writer. For example for printing the output in JSON format, specify: -outputformat json For more details on the available output printing formats, see the Writers section below." }, { "flag": "", "long": null, "arg": null, "description": "Print sections structure and section information, and exit. The output is not meant to be parsed by a machine." }, { "flag": "", "long": null, "arg": null, "description": "Select only the streams specified by streamspecifier. This option affects only the options related to streams (e.g. \"showstreams\", \"showpackets\", etc.). For example to show only audio streams, you can use the command: ffprobe -showstreams -selectstreams a INPUT To show only video packets belonging to the video stream with index 1: ffprobe -showpackets -selectstreams v:1 INPUT" }, { "flag": "", "long": null, "arg": null, "description": "Show payload data, as a hexadecimal and ASCII dump. Coupled with -showpackets, it will dump the packets' data. Coupled with -showstreams, it will dump the codec extradata. The dump is printed as the \"data\" field. It may contain newlines." }, { "flag": "", "long": null, "arg": null, "description": "Show a hash of payload data, for packets with -showpackets and for codec extradata with -showstreams." }, { "flag": "", "long": null, "arg": null, "description": "Show information about the error found when trying to probe the input. The error information is printed within a section with name \"ERROR\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information about the container format of the input multimedia stream. All the container format information is printed within a section with name \"FORMAT\"." }, { "flag": "", "long": null, "arg": null, "description": "Like -showformat, but only prints the specified entry of the container format information, rather than all. This option may be given more than once, then all specified entries will be shown. This option is deprecated, use \"showentries\" instead." }, { "flag": "", "long": null, "arg": null, "description": "Set list of entries to show. Entries are specified according to the following syntax. sectionentries contains a list of section entries separated by \":\". Each section entry is composed by a section name (or unique name), optionally followed by a list of entries local to that section, separated by \",\". If section name is specified but is followed by no \"=\", all entries are printed to output, together with all the contained sections. Otherwise only the entries specified in the local section entries list are printed. In particular, if \"=\" is specified but the list of local entries is empty, then no entries will be shown for that section. Note that the order of specification of the local section entries is not honored in the output, and the usual display order will be retained. The formal syntax is given by: ::= [,] ::= [=[]] ::= [:] For example, to show only the index and type of each stream, and the PTS time, duration time, and stream index of the packets, you can specify the argument: packet=ptstime,durationtime,streamindex : stream=index,codectype To show all the entries in the section \"format\", but only the codec type in the section \"stream\", specify the argument: format : stream=codectype To show all the tags in the stream and format sections: streamtags : formattags To show only the \"title\" tag (if available) in the stream sections: streamtags=title" }, { "flag": "", "long": null, "arg": null, "description": "Show information about each packet contained in the input multimedia stream. The information for each single packet is printed within a dedicated section with name \"PACKET\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information about each frame and subtitle contained in the input multimedia stream. The information for each single frame is printed within a dedicated section with name \"FRAME\" or \"SUBTITLE\"." }, { "flag": "", "long": null, "arg": null, "description": "Show logging information from the decoder about each frame according to the value set in loglevel, (see \"-loglevel\"). This option requires \"-showframes\". The information for each log message is printed within a dedicated section with name \"LOG\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information about each media stream contained in the input multimedia stream. Each media stream information is printed within a dedicated section with name \"STREAM\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information about programs and their streams contained in the input multimedia stream. Each media stream information is printed within a dedicated section with name \"PROGRAMSTREAM\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information about chapters stored in the format. Each chapter is printed within a dedicated section with name \"CHAPTER\"." }, { "flag": "", "long": null, "arg": null, "description": "Count the number of frames per stream and report it in the corresponding stream section." }, { "flag": "", "long": null, "arg": null, "description": "Count the number of packets per stream and report it in the corresponding stream section." }, { "flag": "", "long": null, "arg": null, "description": "Read only the specified intervals. readintervals must be a sequence of interval specifications separated by \",\". ffprobe will seek to the interval starting point, and will continue reading from that. Each interval is specified by two optional parts, separated by \"%\". The first part specifies the interval start position. It is interpreted as an absolute position, or as a relative offset from the current position if it is preceded by the \"+\" character. If this first part is not specified, no seeking will be performed when reading this interval. The second part specifies the interval end position. It is interpreted as an absolute position, or as a relative offset from the current position if it is preceded by the \"+\" character. If the offset specification starts with \"#\", it is interpreted as the number of packets to read (not including the flushing packets) from the interval start. If no second part is specified, the program will read until the end of the input. Note that seeking is not accurate, thus the actual interval start point may be different from the specified position. Also, when an interval duration is specified, the absolute end time will be computed by adding the duration to the interval start point found by seeking the file, rather than to the specified start value. The formal syntax is given by: ::= [|+][%[|+]] ::= [,] A few examples follow. • Seek to time 10, read packets until 20 seconds after the found seek point, then seek to position \"01:30\" (1 minute and thirty seconds) and read packets until position \"01:45\". 10%+20,01:30%01:45 • Read only 42 packets after seeking to position \"01:23\": 01:23%+#42 • Read only the first 20 seconds from the start: %+20 • Read from the start until position \"02:30\": %02:30" }, { "flag": "", "long": null, "arg": null, "description": "Show private data, that is data depending on the format of the particular shown element. This option is enabled by default, but you may need to disable it for specific uses, for example when creating XSD-compliant XML output." }, { "flag": "", "long": null, "arg": null, "description": "Show information related to program version. Version information is printed within a section with name \"PROGRAMVERSION\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information related to library versions. Version information for each library is printed within a section with name \"LIBRARYVERSION\"." }, { "flag": "", "long": null, "arg": null, "description": "Show information related to program and library versions. This is the equivalent of setting both -showprogramversion and -showlibraryversions options." }, { "flag": "", "long": null, "arg": null, "description": "Show information about all pixel formats supported by FFmpeg. Pixel format information for each format is printed within a section with name \"PIXELFORMAT\"." }, { "flag": "", "long": null, "arg": null, "description": "Some writers viz. JSON and XML, omit the printing of fields with invalid or non- applicable values, while other writers always print them. This option enables one to control this behaviour. Valid values are \"always\"/1, \"never\"/0 and \"auto\"/-1. Default is auto." }, { "flag": "", "long": null, "arg": null, "description": "Force bitexact output, useful to produce output which is not dependent on the specific build." }, { "flag": "-i", "long": null, "arg": null, "description": "Read inputurl." }, { "flag": "-o", "long": null, "arg": null, "description": "Write output to outputurl. If not specified, the output is sent to stdout." } ], "examples": [], "see_also": [ { "name": "ffprobe-all", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffprobe-all/1/json" }, { "name": "ffmpeg", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg/1/json" }, { "name": "ffplay", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffplay/1/json" }, { "name": "ffmpeg-utils", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-utils/1/json" }, { "name": "ffmpeg-scaler", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-scaler/1/json" }, { "name": "ffmpeg-resampler", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-resampler/1/json" }, { "name": "ffmpeg-codecs", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-codecs/1/json" }, { "name": "ffmpeg-bitstream-filters", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-bitstream-filters/1/json" }, { "name": "ffmpeg-formats", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-formats/1/json" }, { "name": "ffmpeg-devices", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-devices/1/json" }, { "name": "ffmpeg-protocols", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-protocols/1/json" }, { "name": "ffmpeg-filters", "section": "1", "url": "https://www.chedong.com/phpMan.php/man/ffmpeg-filters/1/json" } ], "tldr": { "source": "official", "description": "Multimedia stream analyzer.", "examples": [ { "description": "Display all available stream info for a media file", "command": "ffprobe {{-v|-loglevel}} error -show_streams {{input.mp4}}" }, { "description": "Display media duration", "command": "ffprobe {{-v|-loglevel}} error -show_entries format=duration {{-of|-output_format}} default=noprint_wrappers=1:nokey=1 {{input.mp4}}" }, { "description": "Display the frame rate of a video", "command": "ffprobe {{-v|-loglevel}} error -select_streams v:0 -show_entries stream=avg_frame_rate {{-of|-output_format}} default=noprint_wrappers=1:nokey=1 {{input.mp4}}" }, { "description": "Display the width or height of a video", "command": "ffprobe {{-v|-loglevel}} error -select_streams v:0 -show_entries stream={{width|height}} {{-of|-output_format}} default=noprint_wrappers=1:nokey=1 {{input.mp4}}" }, { "description": "Display the average bit rate of a video", "command": "ffprobe {{-v|-loglevel}} error -select_streams v:0 -show_entries stream=bit_rate {{-of|-output_format}} default=noprint_wrappers=1:nokey=1 {{input.mp4}}" } ] } }