Opened 10 years ago
Closed 8 years ago
#4166 closed defect (needs_more_info)
MPEG4 and LibXVid in AVI lose audio sync after some time
| Reported by: | ramitb | Owned by: | |
|---|---|---|---|
| Priority: | normal | Component: | undetermined |
| Version: | unspecified | Keywords: | async |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
Summary of the bug: This happens only with the AVI container using MPEG4 or Libxvid codecs (if using a MP4 container it works fine).
When trying to recode a video into DIVX/MPEG4 in AVI container the audio loses sync after a while progressively.
The original file is 880MB but can't be split since this is a progressive issue. The original file can be downloaded here:
http://mcebuddy:mcebuddy@files.mcebuddy2x.com/upload/DWSpiro/In%20the%20Heat%20of%20the%20Night_WHDHDT2_2014_11_23_18_58_00.wtv
Here is the command used to reproduce the issue (the scale is just to speed up the conversion but has no effect on the sync with or without)
How to reproduce:
ffmpeg -i "In the Heat of the Night_WHDHDT2_2014_11_
23_18_58_00.wtv" -vcodec mpeg4 -acodec ac3 -ab 128k -b 400 -vf scale=320:-1 test.avi
ffmpeg version N-68199-g5fe026f Copyright (c) 2000-2014 the FFmpeg developers
built on Dec 3 2014 23:46:55 with gcc 4.9.2 (GCC)
configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfi
g --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-lib
opencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinge
r --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --
enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-
libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
libavutil 54. 15.100 / 54. 15.100
libavcodec 56. 13.100 / 56. 13.100
libavformat 56. 15.102 / 56. 15.102
libavdevice 56. 3.100 / 56. 3.100
libavfilter 5. 2.103 / 5. 2.103
libswscale 3. 1.101 / 3. 1.101
libswresample 1. 1.100 / 1. 1.100
libpostproc 53. 3.100 / 53. 3.100
[mpeg2video @ 03a78060] Invalid frame dimensions 0x0.
Last message repeated 30 times
Input #0, wtv, from 'In the Heat of the Night_WHDHDT2_2014_11_23_18_58_00.wtv':
Metadata:
WM/MediaClassPrimaryID: db9830bd-3ab3-4fab-8a371a995f7ff74
WM/MediaClassSecondaryID: ba7f258a-62f7-47a9-b21f4651c42a000
Title : In the Heat of the Night
WM/SubTitle : Trundel's Will Be Done
WM/SubTitleDescription: Harriet DeLong asks Chief Gillespie to mediate a custody dispute when a wealthy woman attemp
ts to take guardianship of her nephew.
genre : Drama;General;Series
WM/OriginalReleaseTime: 0
WM/MediaCredits : Carroll O'Connor/Howard E. Rollins/Anne-Marie Johnson/Alan Autry/Denise Nicholas/David Hart/Christ
ian LeBlanc/Peter Gabb/Hugh O'Connor/Dennis Lipscomb/Jill Carroll;;;
service_provider: WHDHDT2
service_name : WHDHDT2 (WHDH-DT2)
WM/MediaNetworkAffiliation: Independent
WM/MediaOriginalChannel: 7
WM/MediaOriginalChannelSubNumber: 2
WM/MediaOriginalBroadcastDateTime: 1992-03-03T05:00:00Z
WM/MediaOriginalRunTime: 38929878258
WM/MediaIsStereo: true
WM/MediaIsRepeat: true
WM/MediaIsLive : false
WM/MediaIsTape : false
WM/MediaIsDelay : false
WM/MediaIsSubtitled: false
WM/MediaIsMovie : false
WM/MediaIsPremiere: false
WM/MediaIsFinale: false
WM/MediaIsSAP : false
WM/MediaIsSport : false
WM/ParentalRating: TV-PG
WM/Provider : MediaCenterDefault
WM/VideoClosedCaptioning: true
WM/WMRVEncodeTime: 2014-11-23 23:58:07
WM/WMRVSeriesUID: !MCSeries!48125534
WM/WMRVServiceID: !MCService!49477459
WM/WMRVProgramID: !MCProgram!28410666
WM/WMRVRequestID: 0
WM/WMRVScheduleItemID: 0
WM/WMRVQuality : 3
WM/WMRVOriginalSoftPrePadding: 420
WM/WMRVOriginalSoftPostPadding: 180
WM/WMRVHardPrePadding: 4294966996
WM/WMRVHardPostPadding: 0
WM/WMRVATSCContent: true
WM/WMRVDTVContent: true
WM/WMRVHDContent: false
Duration : 38929904508
WM/WMRVEndTime : 2014-11-24 01:03:00
WM/WMRVBitrate : 2.917057
WM/WMRVKeepUntil: 4294967295
WM/WMRVActualSoftPrePadding: 412
WM/WMRVActualSoftPostPadding: 180
WM/WMRVContentProtected: false
WM/WMRVContentProtectedPercent: 0
WM/WMRVExpirationSpan: 9223372036854775807
WM/WMRVInBandRatingSystem: 255
WM/WMRVInBandRatingLevel: 255
WM/WMRVInBandRatingAttributes: 0
WM/WMRVWatched : false
WM/MediaThumbWidth: 352
WM/MediaThumbHeight: 240
WM/MediaThumbStride: 1056
WM/MediaThumbRet: 0
WM/MediaThumbRatingSystem: 255
WM/MediaThumbRatingLevel: 255
WM/MediaThumbRatingAttributes: 0
WM/MediaThumbAspectRatioX: 4
WM/MediaThumbAspectRatioY: 3
WM/MediaThumbTimeStamp: 4646161835318323993
Duration: 01:04:52.72, start: 1.563819, bitrate: 1852 kb/s
Stream #0:0[0x17](eng): Audio: ac3, 48000 Hz, stereo, fltp, 192 kb/s
Stream #0:1[0x18]: Video: mpeg2video (Main), yuv420p(tv), 704x480 [SAR 10:11 DAR 4:3], max. 15000 kb/s, 29.97 fps, 5
9.94 tbr, 10000k tbn, 59.94 tbc
Stream #0:2[0x19]: Subtitle: eia_608
Please use -b:a or -b:v, -b is ambiguous
[mpeg4 @ 03ac80e0] Bitrate 400 is extremely low, maybe you mean 400k
The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
Output #0, avi, to 'test.avi':
Metadata:
WM/MediaClassPrimaryID: db9830bd-3ab3-4fab-8a371a995f7ff74
WM/MediaClassSecondaryID: ba7f258a-62f7-47a9-b21f4651c42a000
INAM : In the Heat of the Night
WM/SubTitle : Trundel's Will Be Done
WM/SubTitleDescription: Harriet DeLong asks Chief Gillespie to mediate a custody dispute when a wealthy woman attemp
ts to take guardianship of her nephew.
IGNR : Drama;General;Series
WM/OriginalReleaseTime: 0
ILNG : en-us
WM/MediaCredits : Carroll O'Connor/Howard E. Rollins/Anne-Marie Johnson/Alan Autry/Denise Nicholas/David Hart/Christ
ian LeBlanc/Peter Gabb/Hugh O'Connor/Dennis Lipscomb/Jill Carroll;;;
service_provider: WHDHDT2
service_name : WHDHDT2 (WHDH-DT2)
WM/MediaNetworkAffiliation: Independent
WM/MediaOriginalChannel: 7
WM/MediaOriginalChannelSubNumber: 2
WM/MediaOriginalBroadcastDateTime: 1992-03-03T05:00:00Z
WM/MediaOriginalRunTime: 38929878258
WM/MediaIsStereo: true
WM/MediaIsRepeat: true
WM/MediaIsLive : false
WM/MediaIsTape : false
WM/MediaIsDelay : false
WM/MediaIsSubtitled: false
WM/MediaIsMovie : false
WM/MediaIsPremiere: false
WM/MediaIsFinale: false
WM/MediaIsSAP : false
WM/MediaIsSport : false
WM/ParentalRating: TV-PG
WM/Provider : MediaCenterDefault
WM/VideoClosedCaptioning: true
WM/WMRVEncodeTime: 2014-11-23 23:58:07
WM/WMRVSeriesUID: !MCSeries!48125534
WM/WMRVServiceID: !MCService!49477459
WM/WMRVProgramID: !MCProgram!28410666
WM/WMRVRequestID: 0
WM/WMRVScheduleItemID: 0
WM/WMRVQuality : 3
WM/WMRVOriginalSoftPrePadding: 420
WM/WMRVOriginalSoftPostPadding: 180
WM/WMRVHardPrePadding: 4294966996
WM/WMRVHardPostPadding: 0
WM/WMRVATSCContent: true
WM/WMRVDTVContent: true
WM/WMRVHDContent: false
Duration : 38929904508
WM/WMRVEndTime : 2014-11-24 01:03:00
WM/WMRVBitrate : 2.917057
WM/WMRVKeepUntil: 4294967295
WM/WMRVActualSoftPrePadding: 412
WM/WMRVActualSoftPostPadding: 180
WM/WMRVContentProtected: false
WM/WMRVContentProtectedPercent: 0
WM/WMRVExpirationSpan: 9223372036854775807
WM/WMRVInBandRatingSystem: 255
WM/WMRVInBandRatingLevel: 255
WM/WMRVInBandRatingAttributes: 0
WM/WMRVWatched : false
WM/MediaThumbWidth: 352
WM/MediaThumbHeight: 240
WM/MediaThumbStride: 1056
WM/MediaThumbRet: 0
WM/MediaThumbRatingSystem: 255
WM/MediaThumbRatingLevel: 255
WM/MediaThumbRatingAttributes: 0
WM/MediaThumbAspectRatioX: 4
WM/MediaThumbAspectRatioY: 3
WM/MediaThumbTimeStamp: 4646161835318323993
ISFT : Lavf56.15.102
Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 320x218 [SAR 109:120 DAR 4:3], q=2-31, 0 kb/s, 29.97 fps, 29
.97 tbn, 29.97 tbc
Metadata:
encoder : Lavc56.13.100 mpeg4
Stream #0:1(eng): Audio: ac3 ([0] [0][0] / 0x2000), 48000 Hz, stereo, fltp, 128 kb/s
Metadata:
encoder : Lavc56.13.100 ac3
Stream mapping:
Stream #0:1 -> #0:0 (mpeg2video (native) -> mpeg4 (native))
Stream #0:0 -> #0:1 (ac3 (native) -> ac3 (native))
Press [q] to stop, [?] for help
[ac3 @ 03a27fe0] delta bit allocation strategy reserved7.85 bitrate= 225.3kbits/s dup=0 drop=2
[ac3 @ 03a27fe0] error decoding the audio block
[ac3 @ 03a27fe0] frame sync error
Error while decoding stream #0:0: Invalid data found when processing input
frame=116600 fps=504 q=31.0 Lsize= 106104kB time=01:04:53.18 bitrate= 223.3kbits/s dup=0 drop=3
video:39646kB audio:60806kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.626378%
Change History (11)
comment:1 by , 10 years ago
| Keywords: | async added |
|---|
comment:2 by , 10 years ago
Perfect thanks that worked. Does it mean that all AVI containers with MPEG4 need async 1? If not how does one tell when it's required?
comment:3 by , 10 years ago
That worked with one file, with another sample it didn't work, it' still out of sync. Again with MP4 container it works fine with AVI container it goes out of sync, even with the -async 1.
The file is available here (too large):
http://mcebuddy:mcebuddy@files.mcebuddy2x.com/upload/The%20Office.ts
comment:4 by , 10 years ago
I tested the following command line:
$ ffmpeg -i The\ Office.ts -qscale 2 out.avi
How can I reproduce A/V desync for the output file?
comment:5 by , 10 years ago
Exact same command as the first file:
ffmpeg -i "The Office.ts" -vcodec mpeg4 -acodec ac3 -ab 128k -b 400 -vf scale=320:-1 test.avi
comment:6 by , 10 years ago
How can I reproduce A/V desync with the output file I produced with my command line?
comment:7 by , 10 years ago
I didn't understand your question - if you're asking about the playback, I used WMP 12 (windows 7) to check the output playback.
comment:8 by , 10 years ago
I tested the output file with MPlayer, vlc and FFplay: All three play the file in sync.
Is the issue only reproducible with WMP?
comment:9 by , 10 years ago
@ ramitbhalla, its possible that ac3 in avi might be causing problems, use mp3 codec instead? or mkv container.
comment:10 by , 10 years ago
It's true, mp3 works fine. I thought the dev team would like to know about the bug hence I reported it.
comment:11 by , 8 years ago
| Resolution: | → needs_more_info |
|---|---|
| Status: | new → closed |
The original wtv file is now an additional real-world sample for ticket #4674.
I am unable to reproduce any issue related to the transport stream The Office.ts, please reopen if you can explain how I can reproduce the problem.
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Needs
-async 1.