[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 |
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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
implemented.
[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>
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