OGM with subtitles -> desync!

[ChAoS Overlord]

Whenever I try to merge a perfectly synchronous .srt subtitle stream (checked with bsplayer) with an avi and put it in an ogm container, the subtitles are there but they are always out of sync. It's almost as if the subtitle renderer thinks it's a different frame rate for the A/V stream and the subtitle stream.

What is the cause of this and how am I to resolve this issue?

[bond]

are you sure that the .avi and the .ogm have exactly the same framerate?

[ChAoS Overlord]

yes they do, I just do a direct stream copy.

[bond]

how did you exactly check if the srt is sync with the .avi (there is no way to put .srt into .avi i think)?

[ChAoS Overlord]

I had the avi allready and an srt, I synced both using subsync.

Then I checked if playback went ok in bsplayer. Both were in perfect sync. Then I ad the subtitle stream to it and put everything in an ogm container using virtualdubmod.

After that: it's out of sync.

[darth rosenberg]

@Bond: avimux gui can include srt subs in an avi file.

srt subs use time stamps, based on milliseconds, not on frames, so they actually do not even have a 'framerate' that could differ from the video's framerate.

[ChAoS Overlord]

Still, I invite you to try it on some files, the problem happens almost every time, with different sources!