Mismatch between number of frames and video duration.

[BurgerBob]

I get a video length mismatch when reading a video using TheoraFile.
Here are the video properties:

And in VLC:

But if I open the video, and I count the frames that way:

I get 2598 frames, that is 43.3 seconds at 60 fps.
When I play the video in game, it plays too fast.

[flibitijibibo]

This is probably the decoder skipping duplicate frames where it can - the container format is kind of fussy about synchronization so you have to time it yourself:

https://github.com/FNA-XNA/FNA/blob/d8167d53b76cf7da54f05872480aca8121bf49ba/src/Media/Xiph/VideoPlayer.cs#L536-L548

[BurgerBob]

Does not seem to be it, if I change the code to that, I do not detect any duplicate frame:

[BurgerBob]

Ok, I tried with some videos and it works with the duplicates frames fix.
I still have the same video with a big mismatch though, maybe I am going to try to re export it.

[BurgerBob]

Re-converting the video solves the issue, thanks for the answer.