[FFmpeg-trac] #2400(undetermined:open): when merging audio and video to mp4 , the audio / video not syncdiated correctly

[FFmpeg]

#2400: when merging audio and video to mp4 , the audio / video not syncdiated
correctly
-------------------------------------+-------------------------------------
             Reporter:  chinshou     |                    Owner:
                 Type:  defect       |                   Status:  open
             Priority:  important    |                Component:
              Version:  git-master   |  undetermined
             Keywords:  regression   |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  1
-------------------------------------+-------------------------------------
Changes (by cehoyos):

 * keywords:   => regression
 * priority:  normal => important
 * status:  new => open
 * reproduced:  0 => 1


Comment:

 From a user's perspective, this is a regression since 967facb (depending
 on the used audio encoder), the original file bbb.mp4 shows no useful
 timestamps with MPlayer and ffplay:
 {{{
 $ ffplay bbb.mp4
 ffplay version N-51293-g67607e2 Copyright (c) 2003-2013 the FFmpeg
 developers
   built on Mar 25 2013 19:24:09 with gcc 4.7 (SUSE Linux)
   configuration: --enable-gpl --disable-indev=jack
   libavutil      52. 22.101 / 52. 22.101
   libavcodec     55.  1.100 / 55.  1.100
   libavformat    55.  0.100 / 55.  0.100
   libavdevice    55.  0.100 / 55.  0.100
   libavfilter     3. 48.102 /  3. 48.102
   libswscale      2.  2.100 /  2.  2.100
   libswresample   0. 17.102 /  0. 17.102
   libpostproc    52.  2.100 / 52.  2.100
 Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'bbb.mp4':sq=    0B f=0/0
   Metadata:
     major_brand     : isom
     minor_version   : 512
     compatible_brands: isomiso2mp41
     encoder         : Lavf54.59.102
   Duration: 00:00:00.13, start: 0.023220, bitrate: 9029 kb/s
     Stream #0:0(und): Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo,
 fltp, 8940 kb/s
     Metadata:
       handler_name    : SoundHandler
    0.07 A-V:  0.000 fd=   0 aq=    3KB vq=    0KB sq=    0B f=0/0

 real    0m5.974s
 user    0m0.127s
 sys     0m0.090s
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/2400#comment:3>
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