diff options
| author | Gyan Doshi <ffmpeg@gyani.pro> | 2021-07-02 15:30:21 +0530 |
|---|---|---|
| committer | Gyan Doshi <ffmpeg@gyani.pro> | 2021-07-11 11:54:20 +0530 |
| commit | 79ebdbb9b9da0a86b277e3f85981196c781af398 (patch) | |
| tree | 3ac954b138815a860112855aba49d44a366a99c8 | |
| parent | 7bd7377ddbad959e7f77681e8cc990561406f04f (diff) | |
ffmpeg: add option recast_media
Allows forcing decoders of different media type.
Needed to decode media data muxed as data streams.
| -rw-r--r-- | doc/ffmpeg.texi | 5 | ||||
| -rw-r--r-- | fftools/ffmpeg_opt.c | 7 |
2 files changed, 11 insertions, 1 deletions
diff --git a/doc/ffmpeg.texi b/doc/ffmpeg.texi index 7827291755..b27b9fe2c4 100644 --- a/doc/ffmpeg.texi +++ b/doc/ffmpeg.texi @@ -449,6 +449,11 @@ output file already exists. Set number of times input stream shall be looped. Loop 0 means no loop, loop -1 means infinite loop. +@item -recast_media (@emph{global}) +Allow forcing a decoder of a different media type than the one +detected or designated by the demuxer. Useful for decoding media +data muxed as data streams. + @item -c[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream}) @itemx -codec[:@var{stream_specifier}] @var{codec} (@emph{input/output,per-stream}) Select an encoder (when used before an output file) or a decoder (when used diff --git a/fftools/ffmpeg_opt.c b/fftools/ffmpeg_opt.c index a63bed54cf..cb7d6ceefc 100644 --- a/fftools/ffmpeg_opt.c +++ b/fftools/ffmpeg_opt.c @@ -186,6 +186,7 @@ static int input_sync; static int input_stream_potentially_available = 0; static int ignore_unknown_streams = 0; static int copy_unknown_streams = 0; +static int recast_media = 0; static int find_stream_info = 1; static void uninit_options(OptionsContext *o) @@ -759,7 +760,7 @@ static const AVCodec *find_codec_or_die(const char *name, enum AVMediaType type, av_log(NULL, AV_LOG_FATAL, "Unknown %s '%s'\n", codec_string, name); exit_program(1); } - if (codec->type != type) { + if (codec->type != type && !recast_media) { av_log(NULL, AV_LOG_FATAL, "Invalid %s type '%s'\n", codec_string, name); exit_program(1); } @@ -774,6 +775,8 @@ static const AVCodec *choose_decoder(OptionsContext *o, AVFormatContext *s, AVSt if (codec_name) { const AVCodec *codec = find_codec_or_die(codec_name, st->codecpar->codec_type, 0); st->codecpar->codec_id = codec->id; + if (recast_media && st->codecpar->codec_type != codec->type) + st->codecpar->codec_type = codec->type; return codec; } else return avcodec_find_decoder(st->codecpar->codec_id); @@ -3429,6 +3432,8 @@ const OptionDef options[] = { "Ignore unknown stream types" }, { "copy_unknown", OPT_BOOL | OPT_EXPERT, { ©_unknown_streams }, "Copy unknown stream types" }, + { "recast_media", OPT_BOOL | OPT_EXPERT, { &recast_media }, + "allow recasting stream type in order to force a decoder of different media type" }, { "c", HAS_ARG | OPT_STRING | OPT_SPEC | OPT_INPUT | OPT_OUTPUT, { .off = OFFSET(codec_names) }, "codec name", "codec" }, |