[FFmpeg-trac] #3595(avcodec:open): Support >6 channels in E-AC-3 audio

FFmpeg trac at avcodec.org
Tue Sep 13 16:41:24 EEST 2016

#3595: Support >6 channels in E-AC-3 audio
             Reporter:  11rcombs     |                    Owner:
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  eac3         |               Blocked By:
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |

Comment (by LigH):

 This does not only belong to the E-AC-3 encoder, but also to the decoder
 or the format recognition in general. There is a report in the German
 doom9/Gleitz video forum that ffmpeg does not even recognize a 7.1 channel
 Blu-ray audio stream correctly, which consists of a 5.1 AC-3 core and
 additional E-AC-3 channels. It may have been related to a slightly older
 version; a rather current ffmpeg version (N-81308-g369ed11, 2016-08-09)
 prints a warning that it will handle only the 5.1 core:

 [eac3 @ 0000000002a8f900] Dependent substream decoding 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
 [eac3 @ 0000000002a8f900] If you want to help, upload a sample of this
 file to ftp://upload.ffmpeg.org/incoming/ and contact the ffmpeg-devel
 mailing list. (ffmpeg-devel at ffmpeg.org)

 Possibly relevant: MediaInfo does not recognize it correctly either (e.g.
 reports an obviously improbable bitrate of 500 bytes per second).

Ticket URL: <https://trac.ffmpeg.org/ticket/3595#comment:2>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker

More information about the FFmpeg-trac mailing list