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| -rw-r--r-- | doc/bitstream_filters.texi | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/doc/bitstream_filters.texi b/doc/bitstream_filters.texi index fe3c910458..315fe33002 100644 --- a/doc/bitstream_filters.texi +++ b/doc/bitstream_filters.texi @@ -32,6 +32,32 @@ Remove zero padding at the end of a packet. @section dump_extra +Add extradata to the beginning of the filtered packets. + +The additional argument specifies which packets should be filtered. +It accepts the values: +@table @samp +@item a +add extradata to all key packets, but only if @var{local_header} is +set in the @option{flags2} codec context field + +@item k +add extradata to all key packets + +@item e +add extradata to all packets +@end table + +If not specified it is assumed @samp{k}. + +For example the following @command{ffmpeg} command forces a global +header (thus disabling individual packet headers) in the H.264 packets +generated by the @code{libx264} encoder, but corrects them by adding +the header stored in extradata to the key packets: +@example +ffmpeg -i INPUT -map 0 -flags:v +global_header -c:v libx264 -bsf:v dump_extra out.ts +@end example + @section h264_mp4toannexb Convert an H.264 bitstream from length prefixed mode to start code |