id,summary,reporter,owner,description,type,status,priority,component,version,resolution,keywords,cc,blockedby,blocking,reproduced,analyzed
1755,Incorrect timestamps for aac in avi,Heesuk Jung,,"Summary of the bug:

Audio become silent before playback reach end of file.
Video end at about 31 sec but audio stopped about 12 sec.

I reviewed audio and video PTS information using ffprobe tool.
Please refer the PTS plotting graph as below.
(Notice! Recommend download of PTS plotting file because of Google docs excel inter-operability)
* PTS plotting link : https://docs.google.com/open?id=0B6r7ZfWFIypCbnRtVlFTVVA0cEU
* Problematic file link : https://docs.google.com/open?id=0B6r7ZfWFIypCeXB3b2J5S1NDMzQ

My Analysis of PTS
 - Video PTS is OK.
 - Audio PTS is NG.
  - Whole timeline of this media file is about 31 sec but audio pts has about 12 sec timeline.
  - Also values of Audio PTS are grouped as special pattern. 
  - Simplified Audio PTS pattern : 0, 0, 0, 1, 1, 2, 2, ……. , N/3
  - Simplified Video PTS pattern : 0, 1, 2, …. , N

 -> The shape of audio PTS make 2 problem.
  1) Audio stop early. Because audio PTS by ffmpeg have 12 sec but real audio has 30 sec.
  2) Seek does not work after 12 sec.
   - My co-worker checked audio PTS information of problematic based on avidemux and Audio PTS is just OK.
   - And so I request that FFmpeg team inspect this problem.

How to reproduce:
% ffplay 016_avi_mpeg4_sp[720@24fps]_aac[2ch_128kbps_44.1khz].avi[MV]_origin.avi",defect,closed,normal,avformat,git-master,fixed,avi aac pts,dwkang@… myungchul.kim@… suhwang.kim@… woojun.jung@… donggul.kim@… hojae.lee@… kubong.min@…,,,1,0