[FFmpeg-user] Upskill to FFmpeg the TimeStamp Correction

ilker tezcan ilkertezcan at gmail.com
Sat Jan 28 06:41:50 EET 2017


I just want you to know that I am just writing with fear and avoiding 
"top-post". If so, there is no question, my conscience will be sore and 
sadness. :(

As developer, could you please transfer the timestamp correction ability 
of MEncoder to FFmpeg? I believe that you or other developers can do that.

Could you open the bug ticket after reproduced & analyzed?

I present all the necessary information in tidy format.

The sample file: 

FFmpeg can't correct timestamp (timebase? duration?) even though it can 
do resynced:

FFmpeg -i ElephantsDream_only_a_few_scenes.mkv -c:v copy -c:a copy -sn 

FFmpeg's report: https://paste.ee/r/Tl7at
The output file's  timestamp (still same remaing with original video): 10:48

But only MEncoder corrects timestamp (both resync and recalculate true 
timestamp for output file):

MEncoder ElephantsDream_only_a_few_scenes.mkv -ni -nosub -ovc copy -oac 
copy -fafmttag 0x706D -of lavf -lavfopts format=mkv -o 

MEncoder's report: https://paste.ee/r/LzO4M
The output file's fixed timestamp: 01:46

I just designed new info-graphic that representatived the issue: 

Thank you in advance.

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