[FFmpeg-user] Getting MPEG2 video stream bitrate

Carl Eugen Hoyos cehoyos at ag.or.at
Fri Apr 25 16:20:45 CEST 2014

Tobias Rapp <t.rapp <at> noa-audio.com> writes:

> I am trying to get the bitrate of an MXF/MPEG2 file using ffprobe. The
> summary printed to stderr shows the bitrate info "max. 50000 kb/s" but the
> value printed to stdout says "bit_rate=N/A".

The stream does not save a (constant or average) bitrate, only the 
maximum bitrate is stored.

> ffprobe version 2.2.1 Copyright (c) 2007-2014 the FFmpeg developers

Please always test current FFmpeg git head before asking here.

> [mxf  <at>  0x27bd2e0] Field dominance 0 support is not implemented. 
> Update your FFmpeg version to the newest one from Git. If the problem 
> still occurs, it means that your file has a feature which has not been 
> implemented.
> [mxf  <at>  0x27bd2e0] If you want to help, upload a sample of this file to
> ftp://upload.ffmpeg.org/MPlayer/incoming/ and contact the ffmpeg-devel 
> mailing list.

And it appears that we need such a sample.
(I don't know much about mxf though.)

Carl Eugen

More information about the ffmpeg-user mailing list