25.09.2021, 23:24
To sum up what I did, and I observed :
(with the whole source file -Suicide Squad - , or the second sample I gave you ):
- I reencode the video + Audio track Fr with 0 delay : video not sync
- I reencode the video + Audio track fr with any delay you want : video not sync
These are results for the 1st audio track (fr). (I didn't play with the 2nd track but I guess if there is no delay in the metadata, no problem will occur and the video/audio will be sync)
it due to the fact that in the metada (data visible with MediaInfo), there is a 1000ms delay in the source mkv file. But in fact, there is no delay if you play the mkv file directly with vlc or smplayer. I mean, the metadata in this source file is not correctly set. And whatever you put in the frontend for the delay, the output file will not be sync.
Secondly :
with any other source file with a 0 delay, and video and audio are corretly sync (playing the mkv source file with vlc, that is : le metadata in the file are correctly set):
- I reencode the video + audio track with 0 delay : video sync (normal, since in fact there is no delay)
- I reencode the video + audio track with 1000 delay : video sync (which is not normal)
BR,
(with the whole source file -Suicide Squad - , or the second sample I gave you ):
- I reencode the video + Audio track Fr with 0 delay : video not sync
- I reencode the video + Audio track fr with any delay you want : video not sync
These are results for the 1st audio track (fr). (I didn't play with the 2nd track but I guess if there is no delay in the metadata, no problem will occur and the video/audio will be sync)
it due to the fact that in the metada (data visible with MediaInfo), there is a 1000ms delay in the source mkv file. But in fact, there is no delay if you play the mkv file directly with vlc or smplayer. I mean, the metadata in this source file is not correctly set. And whatever you put in the frontend for the delay, the output file will not be sync.
Secondly :
with any other source file with a 0 delay, and video and audio are corretly sync (playing the mkv source file with vlc, that is : le metadata in the file are correctly set):
- I reencode the video + audio track with 0 delay : video sync (normal, since in fact there is no delay)
- I reencode the video + audio track with 1000 delay : video sync (which is not normal)
BR,