[FFmpeg-trac] #3661(avcodec:new): Unable to play AC-3 stream in Blu-Ray
FFmpeg
trac at avcodec.org
Thu May 22 12:30:08 CEST 2014
#3661: Unable to play AC-3 stream in Blu-Ray
-----------------------------------+--------------------------------------
Reporter: OrbWeaver | Type: defect
Status: new | Priority: normal
Component: avcodec | Version: git-master
Keywords: ac3 | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
-----------------------------------+--------------------------------------
Summary of the bug:
Attempting to view the Blu-Ray "Defiance" (UK release) using mplayer built
against ffmpeg git commit f932e5f7169282daaa06b08500d2c632cf70e14e results
in missing audio after the first few seconds, with multiple errors on the
console. Extracting the audio stream to a separate file and playing with
ffplay gives the same result:
{{{
ffplay version N-40092-gf932e5f Copyright (c) 2003-2014 the FFmpeg
developers
built on May 22 2014 10:10:57 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
configuration: --enable-ffplay
libavutil 52. 86.100 / 52. 86.100
libavcodec 55. 63.100 / 55. 63.100
libavformat 55. 40.100 / 55. 40.100
libavdevice 55. 13.101 / 55. 13.101
libavfilter 4. 5.100 / 4. 5.100
libswscale 2. 6.100 / 2. 6.100
libswresample 0. 19.100 / 0. 19.100
[ac3 @ 0x7fd23c0008c0] Estimating duration from bitrate, this may be
inaccurate
Input #0, ac3, from '/tmp/defiance_ac3.dump':
Duration: 00:03:07.25, start: 0.000000, bitrate: 448 kb/s
Stream #0:0: Audio: ac3, 48000 Hz, 5.1(side), fltp, 448 kb/s
[ac3 @ 0x7fd23c005be0] frame sync errorvq= 0KB sq= 0B f=0/0
[ac3 @ 0x7fd23c005be0] new coupling strategy must be present in block 0
[ac3 @ 0x7fd23c005be0] error decoding the audio block
[ac3 @ 0x7fd23c005be0] frame sync errorvq= 0KB sq= 0B f=0/0
[ac3 @ 0x7fd23c005be0] Additional substreams 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.
[ac3 @ 0x7fd23c005be0] 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.
[ac3 @ 0x7fd23c005be0] unsupported frame type : skipping frame
}}}
Complete ffplay command output is here: http://pastebin.com/y24PTdFD
The video looks OK and the other audio streams on the Blu-Ray play without
problems, so this doesn't seem to be a problem with failed AACS
decryption. I will attach the start of the AC-3 audio stream in question
to illustrate the problem.
--
Ticket URL: <https://trac.ffmpeg.org/ticket/3661>
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