[FFmpeg-trac] #4894(avcodec:new): Problem with -acodec copy and AAC VBR

FFmpeg trac at avcodec.org
Tue Sep 29 21:41:39 CEST 2015

#4894: Problem with -acodec copy and AAC VBR
             Reporter:  hgg         |                    Owner:
                 Type:  defect      |                   Status:  new
             Priority:  minor       |                Component:  avcodec
              Version:  git-master  |               Resolution:
             Keywords:  AAC         |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  0           |

Comment (by peloverde):

 MediaInfo compares the average and max bitrates in the esds to determine
 CBR vs VBR. For transmuxed files FFmpeg always sets max bitrate to avg
 bitrate. It should be possible to create a compute_max_bitrate() function
 just like compute_avg_bitrate() to create maximally complaint files. But I
 don't know of any practical implications of this.

Ticket URL: <https://trac.ffmpeg.org/ticket/4894#comment:5>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list