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DVB H264 chunk transcoding => merging in MP4 => out of sync

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DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Viewing on VLC works great. Audio/Video perfectly in sync. Viewing in Quicktime (Version 10.4 MacOS sierra, Quicktime 7) the video get's out of sync after 3/4 minutes. Scrubbing in the timeline will fix the problem, then after 3/4 minutes I see the synchronization problem again.

Using current FFmpeg version to transcode into H.264 and AAC TS chunks.

ffmpeg -i "udp://224.5.2.5:10001?overrun_nonfatal=1&fifo_size=50000000" -map 0:3 -map 0:4 -s 1280x720 -acodec aac -b:a 192k -ac 2 -ar 48000 -vcodec libx264 -preset:v medium -r 50 -g 100 -vb 3200000 -y -fflags +genpts -f segment -segment_time 60 -segment_atclocktime 1 -strftime 1 "/videofiles/TV_HD_%Y-%m-%d_%H-%M-%S.ts

Everything works fine... chunks are created. No errors in output. Audio/video TS pieces in sync.

#### Details of a chunk file:

ffprobe /videofiles/TV_HD_2017-03-13_14-25-00.ts
ffprobe version 3.2.4-tessus Copyright (c) 2007-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
 configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
 libavutil      55. 34.101 / 55. 34.101
 libavcodec     57. 64.101 / 57. 64.101
 libavformat    57. 56.101 / 57. 56.101
 libavdevice    57.  1.100 / 57.  1.100
 libavfilter     6. 65.100 /  6. 65.100
 libswscale      4.  2.100 /  4.  2.100
 libswresample   2.  3.100 /  2.  3.100
 libpostproc    54.  1.100 / 54.  1.100
Input #0, mpegts, from '/Users/Andreas/Desktop/TEST/ARD_HD_2017-03-13_14-25-00.ts':
 Duration: 00:01:00.04, start: 115.402667, bitrate: 3720 kb/s
 Program 1
   Metadata:
     service_name    : Service01
     service_provider: FFmpeg
   Stream #0:0[0x100]: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
   Stream #0:1[0x101](deu): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 204 kb/s


#### Merging together:

ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -c:a copy -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 tvexport.mp4

#### and output:
ffmpeg version 3.2.4-tessus Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
 configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
 libavutil      55. 34.101 / 55. 34.101
 libavcodec     57. 64.101 / 57. 64.101
 libavformat    57. 56.101 / 57. 56.101
 libavdevice    57.  1.100 / 57.  1.100
 libavfilter     6. 65.100 /  6. 65.100
 libswscale      4.  2.100 /  4.  2.100
 libswresample   2.  3.100 /  2.  3.100
 libpostproc    54.  1.100 / 54.  1.100
Input #0, concat, from 'files.txt':
 Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
   Stream #0:1(deu): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 169 kb/s
Output #0, mp4, to 'work_tmp0.mp4':
 Metadata:
   creation_time   : now
   encoder         : Lavf57.56.101
   Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 50 fps, 50 tbr, 90k tbn, 90k tbc
   Stream #0:1(deu): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, 169 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x7fff37800600] Starting second pass: moving the moov atom to the beginning of the filex    
frame=24000 fps=9825 q=-1.0 Lsize=  199633kB time=00:08:00.20 bitrate=3405.6kbits/s speed= 197x    
video:187817kB audio:11755kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.030912%


What could be the problem?

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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

Carl Eugen Hoyos-2
2017-03-15 13:03 GMT+01:00  <[hidden email]>:
> ffmpeg version 3.2.4-tessus Copyright (c) 2000-2017 the FFmpeg developers

Please test current FFmpeg git head (and tell us if anything is unclear on
tessus's homepage) and if the issue is reproducible, please provide input
file(s).

Carl Eugen
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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Dear Carl,

many thanks for your feedback. Hope you can help!
We used the current dev version (ffmpeg-84005-g3ba7b47 from today morning) - same result.

Example-Files could be taken from here: https://www.wetransfer.com/downloads/ba29067a28723c12373dbfdd25c4bfae20170317093643/10cb1a9e9693b86ae921cc0b9838ffc520170317093643/3ae8a8
Command we used to concat and create MP4:

ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -vsync 1 -c:a copy -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 work_tmp0.mp4
ffmpeg version N-84005-g3ba7b47-tessus Copyright (c) 2000-2017 the FFmpeg developers
 built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
 configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
 libavutil      55. 48.100 / 55. 48.100
 libavcodec     57. 83.100 / 57. 83.100
 libavformat    57. 66.104 / 57. 66.104
 libavdevice    57.  3.100 / 57.  3.100
 libavfilter     6. 76.100 /  6. 76.100
 libswscale      4.  3.101 /  4.  3.101
 libswresample   2.  4.100 /  2.  4.100
 libpostproc    54.  2.100 / 54.  2.100
Input #0, concat, from 'files.txt':
 Duration: N/A, start: 0.000000, bitrate: N/A
   Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
   Stream #0:1(deu): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 235 kb/s
Output #0, mp4, to 'work_tmp0.mp4':
 Metadata:
   creation_time   : now
   encoder         : Lavf57.66.104
   Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 50 fps, 50 tbr, 90k tbn, 90k tbc
   Stream #0:1(deu): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 235 kb/s
Stream mapping:
 Stream #0:0 -> #0:0 (copy)
 Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
[mp4 @ 0x7fbc4e0b6000] Starting second pass: moving the moov atom to the beginning of the file    
frame=27000 fps=8929 q=-1.0 Lsize=  224240kB time=00:09:00.18 bitrate=3400.7kbits/s speed= 179x    
video:210889kB audio:12843kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.227265%

The delay is visible at minute 2~3. At minute 4 it's very visible in Quicktime. Remember: do not scrub in the timeline during playback. Scrubbing does an alignment and everything is back in sync. No problems in VLC.

Any help is very, very appreciated.
Best, Andreas


> Am 16.03.2017 um 20:50 schrieb Carl Eugen Hoyos <[hidden email]>:
>
> 2017-03-15 13:03 GMT+01:00  <[hidden email]>:
>> ffmpeg version 3.2.4-tessus Copyright (c) 2000-2017 the FFmpeg developers
>
> Please test current FFmpeg git head (and tell us if anything is unclear on
> tessus's homepage) and if the issue is reproducible, please provide input
> file(s).
>
> Carl Eugen
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".

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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Dear Carl,

example files on wetransfer are going to be removed soon.  
Was a download successful?

Best, Andreas


> Am 17.03.2017 um 10:51 schrieb [hidden email]:
>
> Dear Carl,
>
> many thanks for your feedback. Hope you can help!
> We used the current dev version (ffmpeg-84005-g3ba7b47 from today morning) - same result.
>
> Example-Files could be taken from here: https://www.wetransfer.com/downloads/ba29067a28723c12373dbfdd25c4bfae20170317093643/10cb1a9e9693b86ae921cc0b9838ffc520170317093643/3ae8a8
> Command we used to concat and create MP4:
>
> ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -vsync 1 -c:a copy -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 work_tmp0.mp4
> ffmpeg version N-84005-g3ba7b47-tessus Copyright (c) 2000-2017 the FFmpeg developers
> built with Apple LLVM version 8.0.0 (clang-800.0.42.1)
> configuration: --cc=/usr/bin/clang --prefix=/opt/ffmpeg --extra-version=tessus --enable-avisynth --enable-fontconfig --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopus --enable-libschroedinger --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3 --disable-ffplay --disable-indev=qtkit --disable-indev=x11grab_xcb
> libavutil      55. 48.100 / 55. 48.100
> libavcodec     57. 83.100 / 57. 83.100
> libavformat    57. 66.104 / 57. 66.104
> libavdevice    57.  3.100 / 57.  3.100
> libavfilter     6. 76.100 /  6. 76.100
> libswscale      4.  3.101 /  4.  3.101
> libswresample   2.  4.100 /  2.  4.100
> libpostproc    54.  2.100 / 54.  2.100
> Input #0, concat, from 'files.txt':
> Duration: N/A, start: 0.000000, bitrate: N/A
>   Stream #0:0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 50 fps, 50 tbr, 90k tbn, 100 tbc
>   Stream #0:1(deu): Audio: aac (LC) ([15][0][0][0] / 0x000F), 48000 Hz, stereo, fltp, 235 kb/s
> Output #0, mp4, to 'work_tmp0.mp4':
> Metadata:
>   creation_time   : now
>   encoder         : Lavf57.66.104
>   Stream #0:0: Video: h264 (High) ([33][0][0][0] / 0x0021), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 50 fps, 50 tbr, 90k tbn, 90k tbc
>   Stream #0:1(deu): Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, stereo, fltp, 235 kb/s
> Stream mapping:
> Stream #0:0 -> #0:0 (copy)
> Stream #0:1 -> #0:1 (copy)
> Press [q] to stop, [?] for help
> [mp4 @ 0x7fbc4e0b6000] Starting second pass: moving the moov atom to the beginning of the file    
> frame=27000 fps=8929 q=-1.0 Lsize=  224240kB time=00:09:00.18 bitrate=3400.7kbits/s speed= 179x    
> video:210889kB audio:12843kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.227265%
>
> The delay is visible at minute 2~3. At minute 4 it's very visible in Quicktime. Remember: do not scrub in the timeline during playback. Scrubbing does an alignment and everything is back in sync. No problems in VLC.
>
> Any help is very, very appreciated.
> Best, Andreas
>
>
>> Am 16.03.2017 um 20:50 schrieb Carl Eugen Hoyos <[hidden email]>:
>>
>> 2017-03-15 13:03 GMT+01:00  <[hidden email]>:
>>> ffmpeg version 3.2.4-tessus Copyright (c) 2000-2017 the FFmpeg developers
>>
>> Please test current FFmpeg git head (and tell us if anything is unclear on
>> tessus's homepage) and if the issue is reproducible, please provide input
>> file(s).
>>
>> Carl Eugen
>> _______________________________________________
>> ffmpeg-user mailing list
>> [hidden email]
>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>
>> To unsubscribe, visit link above, or email
>> [hidden email] with subject "unsubscribe".
>

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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

Carl Eugen Hoyos-2
In reply to this post by ffmpeg-9
2017-03-15 13:03 GMT+01:00  <[hidden email]>:

> ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -c:a copy
> -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 tvexport.mp4

I have removed the absolute paths from files.txt (you do agree they make
testing impossible?) and have tested the following command line:
$ ffmpeg -f concat -i files.txt -c copy out.mp4
(The other options you use seem superfluous or make little sense)
The output file plays fine with MPlayer, vlc and ffplay (three different
demuxers). Are you able to test with WMP?
Can you confirm that this file still fails with QT?

Carl Eugen
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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Confirmed: video still fails in Quicktime. WMP under Win 8.1 looks after quick test fine. Test under Win 10 will be done soon.
Tested on iOS (current 10.2, iPhone 6s) the same video. Also here the same delay is visible (playback on iOS is based generally on Quicktime).

Demo is attached (screen-record, audio source speakers of the system - not perfect but does the trick for test):
www.keepinmind.info/download/error.mov <http://www.keepinmind.info/download/error.mov>

Andreas


> Am 24.03.2017 um 20:48 schrieb Carl Eugen Hoyos <[hidden email]>:
>
> 2017-03-15 13:03 GMT+01:00  <[hidden email]>:
>
>> ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -c:a copy
>> -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 tvexport.mp4
>
> I have removed the absolute paths from files.txt (you do agree they make
> testing impossible?) and have tested the following command line:
> $ ffmpeg -f concat -i files.txt -c copy out.mp4
> (The other options you use seem superfluous or make little sense)
> The output file plays fine with MPlayer, vlc and ffplay (three different
> demuxers). Are you able to test with WMP?
> Can you confirm that this file still fails with QT?
>
> Carl Eugen
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".

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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Eugen,
we tested also under Chrome (v57, MacOS), Chrome Android (current Version) and Windows 10 with the new media player. We did not recognize the sync problems with the test-movie.

Conclusion: problems just under iOS and Quicktime (MacOS, Windows version of Quicktime probably too).

Best, Andreas



> Am 25.03.2017 um 14:39 schrieb [hidden email]:
>
> Confirmed: video still fails in Quicktime. WMP under Win 8.1 looks after quick test fine. Test under Win 10 will be done soon.
> Tested on iOS (current 10.2, iPhone 6s) the same video. Also here the same delay is visible (playback on iOS is based generally on Quicktime).
>
> Demo is attached (screen-record, audio source speakers of the system - not perfect but does the trick for test):
> www.keepinmind.info/download/error.mov <http://www.keepinmind.info/download/error.mov>
>
> Andreas
>
>
>> Am 24.03.2017 um 20:48 schrieb Carl Eugen Hoyos <[hidden email]>:
>>
>> 2017-03-15 13:03 GMT+01:00  <[hidden email]>:
>>
>>> ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -c:a copy
>>> -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 tvexport.mp4
>>
>> I have removed the absolute paths from files.txt (you do agree they make
>> testing impossible?) and have tested the following command line:
>> $ ffmpeg -f concat -i files.txt -c copy out.mp4
>> (The other options you use seem superfluous or make little sense)
>> The output file plays fine with MPlayer, vlc and ffplay (three different
>> demuxers). Are you able to test with WMP?
>> Can you confirm that this file still fails with QT?
>>
>> Carl Eugen
>> _______________________________________________
>> ffmpeg-user mailing list
>> [hidden email]
>> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>>
>> To unsubscribe, visit link above, or email
>> [hidden email] with subject "unsubscribe".
>
> _______________________________________________
> ffmpeg-user mailing list
> [hidden email]
> http://ffmpeg.org/mailman/listinfo/ffmpeg-user
>
> To unsubscribe, visit link above, or email
> [hidden email] with subject "unsubscribe".

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Re: DVB H264 chunk transcoding => merging in MP4 => out of sync

ffmpeg-9
Eugen,
you have any idea how to solve the Quicktime issue?
Best, Andreas


> Am 29.03.2017 um 12:30 schrieb [hidden email]:
>
> Eugen,
> we tested also under Chrome (v57, MacOS), Chrome Android (current Version) and Windows 10 with the new media player. We did not recognize the sync problems with the test-movie.
>
> Conclusion: problems just under iOS and Quicktime (MacOS, Windows version of Quicktime probably too).
>
> Best, Andreas
>
>
>
>> Am 25.03.2017 um 14:39 schrieb [hidden email] <mailto:[hidden email]>:
>>
>> Confirmed: video still fails in Quicktime. WMP under Win 8.1 looks after quick test fine. Test under Win 10 will be done soon.
>> Tested on iOS (current 10.2, iPhone 6s) the same video. Also here the same delay is visible (playback on iOS is based generally on Quicktime).
>>
>> Demo is attached (screen-record, audio source speakers of the system - not perfect but does the trick for test):
>> www.keepinmind.info/download/error.mov <http://www.keepinmind.info/download/error.mov> <http://www.keepinmind.info/download/error.mov <http://www.keepinmind.info/download/error.mov>>
>>
>> Andreas
>>
>>
>>> Am 24.03.2017 um 20:48 schrieb Carl Eugen Hoyos <[hidden email]>:
>>>
>>> 2017-03-15 13:03 GMT+01:00  <[hidden email]>:
>>>
>>>> ffmpeg -f concat -safe 0 -i files.txt -y -metadata creation_time=now -c:v copy -c:a copy
>>>> -fflags +genpts -movflags faststart -use_editlist 0 -f mp4 tvexport.mp4
>>>
>>> I have removed the absolute paths from files.txt (you do agree they make
>>> testing impossible?) and have tested the following command line:
>>> $ ffmpeg -f concat -i files.txt -c copy out.mp4
>>> (The other options you use seem superfluous or make little sense)
>>> The output file plays fine with MPlayer, vlc and ffplay (three different
>>> demuxers). Are you able to test with WMP?
>>> Can you confirm that this file still fails with QT?
>>>
>>> Carl Eugen
>>> _______________________________________________
>>> ffmpeg-user mailing list
>>> [hidden email]
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