[FFmpeg-trac] #4334(ffmpeg:new): Second audio track marked as default after copy

FFmpeg trac at avcodec.org
Fri Feb 27 11:10:34 CET 2015


#4334: Second audio track marked as default after copy
-------------------------------------+-------------------------------------
             Reporter:  mar          |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  ffmpeg
              Version:  git-master   |               Resolution:
             Keywords:  mp4 default  |               Blocked By:
  audio track                        |  Reproduced by developer:  0
             Blocking:               |
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------

Comment (by mar):

 As workaround, I can use mp4box to correct this. With mp4box, I see that
 the first audio track of my output is disabled:
 {{{
 c:\Temp>mp4box -info Out.mp4
 * Movie Info *
         Timescale 1000 - Duration 00:00:05.024
         3 track(s)
         Fragmented File: no
         File Brand isom - version 512
         Created: UNKNOWN DATE   Modified: UNKNOWN DATE
 File has no MPEG4 IOD/OD

 iTunes Info:
         Encoder Software: Lavf56.23.105
 1 UDTA types: meta (1)

 Track # 1 Info - TrackID 1 - TimeScale 12800 - Media Duration 00:00:05.000
 Track has 2 edit lists: track duration is 00:00:05.005
 Media Info: Language "und (und)" - Type "vide:avc1" - 125 samples
 Visual Track layout: x=0 y=0 width=1024 height=576
 MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
 AVC/H264 Video - Visual Size 720 x 576
         AVC Info: 1 SPS - 1 PPS - Profile High @ Level 3
         NAL Unit length bits: 32
         Pixel Aspect Ratio 64:45 - Indicated track size 1024 x 576
 Self-synchronized

 Track # 2 Info - TrackID 2 - TimeScale 48000 - Media Duration 00:00:05.024
 Track has 1 edit lists: track duration is 00:00:05.024
 Track is disabled
 Media Info: Language "ger (ger)" - Type "soun:ac-3" - 157 samples
         AC-3 stream - Sample Rate 48000 - 5.1 channel(s) - bitrate 448000
 Alternate Group ID 1

 Track # 3 Info - TrackID 3 - TimeScale 48000 - Media Duration 00:00:05.024
 Track has 1 edit lists: track duration is 00:00:05.024
 Media Info: Language "eng (eng)" - Type "soun:ac-3" - 157 samples
         AC-3 stream - Sample Rate 48000 - 5.1 channel(s) - bitrate 448000
 Alternate Group ID 1


 c:\Temp>
 }}}

 So as workaround, I can simply enable the first audio track and disable
 the second audio track with mp4box:
 {{{
 c:\Temp>mp4box Out.mp4 -enable 2 -disable 3
 Saving Out.mp4: 0.500 secs Interleaving
 }}}

 Now, everything is fine, the mp4box output is
 {{{
 c:\Temp>mp4box -info Out.mp4
 * Movie Info *
         Timescale 1000 - Duration 00:00:05.024
         3 track(s)
         Fragmented File: no
         File suitable for progressive download (moov before mdat)
         File Brand isom - version 512
         Created: UNKNOWN DATE   Modified: UNKNOWN DATE
 File has no MPEG4 IOD/OD

 iTunes Info:
         Encoder Software: Lavf56.23.105
 1 UDTA types: meta (1)

 Track # 1 Info - TrackID 1 - TimeScale 12800 - Media Duration 00:00:05.000
 Track has 2 edit lists: track duration is 00:00:05.005
 Media Info: Language "und (und)" - Type "vide:avc1" - 125 samples
 Visual Track layout: x=0 y=0 width=1024 height=576
 MPEG-4 Config: Visual Stream - ObjectTypeIndication 0x21
 AVC/H264 Video - Visual Size 720 x 576
         AVC Info: 1 SPS - 1 PPS - Profile High @ Level 3
         NAL Unit length bits: 32
         Pixel Aspect Ratio 64:45 - Indicated track size 1024 x 576
         Chroma format 0 - Luma bit depth 8 - chroma bit depth 8
 Self-synchronized

 Track # 2 Info - TrackID 2 - TimeScale 48000 - Media Duration 00:00:05.024
 Track has 1 edit lists: track duration is 00:00:05.024
 Media Info: Language "ger (ger)" - Type "soun:ac-3" - 157 samples
         AC-3 stream - Sample Rate 48000 - 5.1 channel(s) - bitrate 448000
 Alternate Group ID 1

 Track # 3 Info - TrackID 3 - TimeScale 48000 - Media Duration 00:00:05.024
 Track has 1 edit lists: track duration is 00:00:05.024
 Track is disabled
 Media Info: Language "eng (eng)" - Type "soun:ac-3" - 157 samples
         AC-3 stream - Sample Rate 48000 - 5.1 channel(s) - bitrate 448000
 Alternate Group ID 1


 c:\Temp>
 }}}

 And ffprobe is also fine:
 {{{
 c:\Temp>ffprobe -i Out.mp4
 ffprobe version N-70239-g111d79a Copyright (c) 2007-2015 the FFmpeg
 developers
   built with gcc 4.9.2 (GCC)
   configuration: --enable-gpl --enable-version3 --disable-w32threads
 --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r
 --enable-gnutls --enab
 le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-
 libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-
 libilbc --enable-lib
 modplug --enable-libmp3lame --enable-libopencore-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-lzma --enable-
 decklink --enab
 le-zlib
   libavutil      54. 19.100 / 54. 19.100
   libavcodec     56. 26.100 / 56. 26.100
   libavformat    56. 23.105 / 56. 23.105
   libavdevice    56.  4.100 / 56.  4.100
   libavfilter     5. 11.101 /  5. 11.101
   libswscale      3.  1.101 /  3.  1.101
   libswresample   1.  1.100 /  1.  1.100
   libpostproc    53.  3.100 / 53.  3.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Out.mp4':
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2avc1mp41
     encoder         : Lavf56.23.105
   Duration: 00:00:05.02, start: 0.000000, bitrate: 1655 kb/s
     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p,
 720x576 [SAR 64:45 DAR 16:9], 757 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc
 (default)
     Metadata:
       handler_name    : VideoHandler
     Stream #0:1(ger): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side),
 fltp, 448 kb/s (default)
     Metadata:
       handler_name    : SoundHandler
     Side data:
       unknown side data type 7 (4 bytes)
     Stream #0:2(eng): Audio: ac3 (ac-3 / 0x332D6361), 48000 Hz, 5.1(side),
 fltp, 448 kb/s
     Metadata:
       handler_name    : SoundHandler
     Side data:
       unknown side data type 7 (4 bytes)

 c:\Temp>
 }}}
 It would be nice when I could produce the desired output wihout this
 workaround with another product.

--
Ticket URL: <https://trac.ffmpeg.org/ticket/4334#comment:2>
FFmpeg <https://ffmpeg.org>
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