Opened 7 years ago

Last modified 6 months ago

#7169 open defect

First chapter of MP4 is always at 0.0

Reported by: Jonatã Bolzan Loss Owned by:
Priority: normal Component: undetermined
Version: unspecified Keywords: mov
Cc: Blocked By:
Blocking: Reproduced by developer: no
Analyzed by developer: no

Description

Summary of the bug: MP4 files produced on ffmpeg with chapter marks being applied using ffmetadata always have the first chapter at 0.0

How to reproduce:

Test movie file:
​https://archive.org/download/mov-bbb/mov_bbb.mp4

Chapters information (chapters.txt):

;FFMETADATA1

[CHAPTER]
START=2153000000
END=3100000000
title=First chapter should start at 2 sec

[CHAPTER]
START=3100000000
END=5550000000
title=Second chapter

[CHAPTER]
START=5550000000
END=8653600000
title=Final chapter

Applying chapters

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy mov_bbb_with_chapters.mp4

or even specifying Apple text

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy -c:s mov_text mov_bbb_with_chapters.mp4

returns this output, confirming it is understanding the first chapter as 2sec:

...
Chapter #0:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
...

but running ffprobe -show_chapters:

ffprobe -show_chapters mov_bbb_with_chapters.mp4

confirms that in some way ffmpeg is setting the first chapter as 0.0:

...
Chapter #0:0: start 0.000000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
...
[CHAPTER]
id=0
time_base=1/1000
start=0
start_time=0.000000
end=3100
end_time=3.100000
TAG:title=First chapter should start at 2 sec
[/CHAPTER]
...

VLC reads the correct information (it shows the first chapter correctly). Other players like MPV, MPC, QT, reads it as 0.0.

Change History (9)

comment:1 by Jonatã Bolzan Loss, 7 years ago

Summary: First chapter of MP4 is always 0 → First chapter of MP4 is always at 0.0

comment:2 by Carl Eugen Hoyos, 7 years ago

Component: ffmpeg → undetermined
Keywords: mov added; chapters removed
Version: 3.4 → unspecified

Please confirm that the issue is reproducible with current FFmpeg git head (nothing else is supported here) and provide the command line that allows to reproduce the issue together with the complete, uncut console output.

comment:3 by Jonatã Bolzan Loss, 7 years ago

Yes, using the last version from github:

ffmpeg version 3.4.git-tessus Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
libavutil      56. 17.100 / 56. 17.100
libavcodec     58. 19.100 / 58. 19.100
libavformat    58. 13.100 / 58. 13.100
libavdevice    58.  4.100 / 58.  4.100
libavfilter     7. 20.100 /  7. 20.100
libswscale      5.  2.100 /  5.  2.100
libswresample   3.  2.100 /  3.  2.100
libpostproc    55.  2.100 / 55.  2.100

Applying chapters:

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy mov_bbb_with_chapters.mp4

or even specifying Apple text:

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy -c:s mov_text mov_bbb_with_chapters.mp4

returns

ffmpeg version 3.4.git-tessus Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2012-03-13T08:58:06.000000Z
    encoder         : HandBrake 0.9.6 2012022800
  Duration: 00:00:10.03, start: 0.000000, bitrate: 629 kb/s
    Chapter #0:0: start 0.000000, end 10.000000
    Metadata:
      title           : Chapter 1
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:3(und): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Input #1, ffmetadata, from 'chapters.txt':
  Duration: 00:00:08.65, start: 0.000000, bitrate: 0 kb/s
    Chapter #1:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #1:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #1:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
Output #0, mp4, to 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    encoder         : Lavf58.13.100
    Chapter #0:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, q=2-31, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  250 fps=0.0 q=-1.0 Lsize=     573kB time=00:00:10.00 bitrate= 469.1kbits/s speed= 480x    
video:367kB audio:197kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.682873%

checking with ffprobe:

ffprobe -show_chapters mov_bbb_with_chapters.mp4

ffprobe version 3.4.git-tessus Copyright (c) 2007-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.13.100
  Duration: 00:00:10.03, start: 0.000000, bitrate: 468 kb/s
    Chapter #0:0: start 0.000000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.654000
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
    Stream #0:2(eng): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      handler_name    : SubtitleHandler
Unsupported codec with id 100359 for input stream 2
[CHAPTER]
id=0
time_base=1/1000
start=0
start_time=0.000000
end=3100
end_time=3.100000
TAG:title=First chapter should start at 2 sec
[/CHAPTER]
[CHAPTER]
id=1
time_base=1/1000
start=3100
start_time=3.100000
end=5550
end_time=5.550000
TAG:title=Second chapter
[/CHAPTER]
[CHAPTER]
id=2
time_base=1/1000
start=5550
start_time=5.550000
end=8654
end_time=8.654000
TAG:title=Final chapter
[/CHAPTER]

comment:4 by Carl Eugen Hoyos, 7 years ago

Where did you get this binary? I thought tessus builds are for OS X...

comment:5 by Jonatã Bolzan Loss, 7 years ago

using ​https://git.ffmpeg.org/ just to make sure:

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy mov_bbb_with_chapters.mp4

ffmpeg version N-90883-g29fd44adf1-tessus Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2012-03-13T08:58:06.000000Z
    encoder         : HandBrake 0.9.6 2012022800
  Duration: 00:00:10.03, start: 0.000000, bitrate: 629 kb/s
    Chapter #0:0: start 0.000000, end 10.000000
    Metadata:
      title           : Chapter 1
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:3(und): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Input #1, ffmetadata, from 'chapters.txt':
  Duration: 00:00:08.65, start: 0.000000, bitrate: 0 kb/s
    Chapter #1:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #1:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #1:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
Output #0, mp4, to 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    encoder         : Lavf58.13.100
    Chapter #0:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, q=2-31, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  250 fps=0.0 q=-1.0 Lsize=     573kB time=00:00:10.00 bitrate= 469.1kbits/s speed= 781x    
video:367kB audio:197kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.682873%

ffprobe

ffprobe -show_chapters mov_bbb_with_chapters.mp4

ffprobe version N-90883-g29fd44adf1-tessus Copyright (c) 2007-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.13.100
  Duration: 00:00:10.03, start: 0.000000, bitrate: 468 kb/s
    Chapter #0:0: start 0.000000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.654000
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
    Stream #0:2(eng): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      handler_name    : SubtitleHandler
Unsupported codec with id 100359 for input stream 2
[CHAPTER]
id=0
time_base=1/1000
start=0
start_time=0.000000
end=3100
end_time=3.100000
TAG:title=First chapter should start at 2 sec
[/CHAPTER]
[CHAPTER]
id=1
time_base=1/1000
start=3100
start_time=3.100000
end=5550
end_time=5.550000
TAG:title=Second chapter
[/CHAPTER]
[CHAPTER]
id=2
time_base=1/1000
start=5550
start_time=5.550000
end=8654
end_time=8.654000
TAG:title=Final chapter
[/CHAPTER]

in reply to:  4 comment:6 by Jonatã Bolzan Loss, 7 years ago

Replying to cehoyos:

Where did you get this binary? I thought tessus builds are for OS X...

You are correct, I mistakenly used the option extra-version tessus. I build it on Ubuntu 18.04, the first time using github and the following using git.ffmpeg.org. I will build it again, but in any case, does the OS matter on this issue?

comment:7 by Carl Eugen Hoyos, 7 years ago

Of course not, I was just curious.

comment:8 by Jonatã Bolzan Loss, 7 years ago

Applying chapters:

ffmpeg -i mov_bbb.mp4 -i chapters.txt -map_chapters 1 -c:a copy -c:v copy mov_bbb_with_chapters.mp4

ffmpeg version N-90883-g29fd44adf1 Copyright (c) 2000-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    creation_time   : 2012-03-13T08:58:06.000000Z
    encoder         : HandBrake 0.9.6 2012022800
  Duration: 00:00:10.03, start: 0.000000, bitrate: 629 kb/s
    Chapter #0:0: start 0.000000, end 10.000000
    Metadata:
      title           : Chapter 1
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:2(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
    Stream #0:3(und): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Input #1, ffmetadata, from 'chapters.txt':
  Duration: 00:00:08.65, start: 0.000000, bitrate: 0 kb/s
    Chapter #1:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #1:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #1:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
Output #0, mp4, to 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: mp42isomavc1
    encoder         : Lavf58.13.100
    Chapter #0:0: start 2.153000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.653600
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, q=2-31, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 90k tbc (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
      encoder         : JVT/AVC Coding
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      creation_time   : 2012-03-13T08:58:06.000000Z
Stream mapping:
  Stream #0:0 -> #0:0 (copy)
  Stream #0:1 -> #0:1 (copy)
Press [q] to stop, [?] for help
frame=  250 fps=0.0 q=-1.0 Lsize=     573kB time=00:00:10.00 bitrate= 469.1kbits/s speed= 335x    
video:367kB audio:197kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 1.682873%

checking:

ffprobe -show_chapters mov_bbb_with_chapters.mp4

ffprobe version N-90883-g29fd44adf1 Copyright (c) 2007-2018 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --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-libsnappy --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-version3
  libavutil      56. 17.100 / 56. 17.100
  libavcodec     58. 19.100 / 58. 19.100
  libavformat    58. 13.100 / 58. 13.100
  libavdevice    58.  4.100 / 58.  4.100
  libavfilter     7. 20.100 /  7. 20.100
  libswscale      5.  2.100 /  5.  2.100
  libswresample   3.  2.100 /  3.  2.100
  libpostproc    55.  2.100 / 55.  2.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'mov_bbb_with_chapters.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf58.13.100
  Duration: 00:00:10.03, start: 0.000000, bitrate: 468 kb/s
    Chapter #0:0: start 0.000000, end 3.100000
    Metadata:
      title           : First chapter should start at 2 sec
    Chapter #0:1: start 3.100000, end 5.550000
    Metadata:
      title           : Second chapter
    Chapter #0:2: start 5.550000, end 8.654000
    Metadata:
      title           : Final chapter
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 320x176, 300 kb/s, 25 fps, 25 tbr, 90k tbn, 180k tbc (default)
    Metadata:
      handler_name    : VideoHandler
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 160 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
    Stream #0:2(eng): Data: bin_data (text / 0x74786574), 0 kb/s
    Metadata:
      handler_name    : SubtitleHandler
Unsupported codec with id 100359 for input stream 2
[CHAPTER]
id=0
time_base=1/1000
start=0
start_time=0.000000
end=3100
end_time=3.100000
TAG:title=First chapter should start at 2 sec
[/CHAPTER]
[CHAPTER]
id=1
time_base=1/1000
start=3100
start_time=3.100000
end=5550
end_time=5.550000
TAG:title=Second chapter
[/CHAPTER]
[CHAPTER]
id=2
time_base=1/1000
start=5550
start_time=5.550000
end=8654
end_time=8.654000
TAG:title=Final chapter
[/CHAPTER]

comment:9 by Balling, 6 months ago

Status: new → open

This is indeed a cosmetic issue, as VLC reads second chapter after 2 second, not from the start.

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