Video speed problem

[zeretul1]

I recently posted in the Audio sectio about a problem I was having with ripped vob files not syncing to their AC3 audio. I have now discovered that the problem is not the audio, but that the video is playing to fast. I am using VirtuaDub-MPEG2 1.5.10, but have only had this problem with a few vob files. The problem is that they play the video to fast, so the audio never syncs up.

I am using SmartRipper 2.41 to extract the vob files from DVD.

Any ideas on what I can do with these files?

Much love!

P.S. If this is not the correct forum to post this in, I could not figure out which one was.

[zeretul1]

No one ever have this happen?

[guns1inger]

Do you know how fast - what framerate are they running at ? What should they be running at ?

[zeretul1]

When I parse one of the problem files, this is the video information.

Frame size, fps (us per frame): 720x480, 29.970 fps (33367us)
Aspect ratio information: DAR=2 (4:3) Television
# of frames (time): 13094 (7:16)
Number of I, P, and B frames: 1161/3493/8440
I-frame min/avg/max/total frame size: 19352/66990/125952 (75953K)
P-frame min/avg/max/total frame size: 3856/27066/94360 (92329K)
B-frame min/avg/max/total frame size: 1928/14171/75820 (116806K)
Average bitrate: 5345 Kbps (653KB/s)

A file that I have no problems with looks like this.

Frame size, fps (us per frame): 720x480, 23.976 fps (41708 us)
Aspect ratio information: DAR= 3 (16:9) "Flat"
# of frames (time): 10807 (7:30)
Number of I, P, and B frames: 985/3160/6662
I-frame min/avg/max/total frame size: 8276/111525/150858 (107278K)
P-frame min/avg/max/total frame size: 1312/35714/85300 (10214K)
B-frame min/avg/max/total frame size: 384/29500/85804 (191925K)
Average bitrate: 7441 Kbps (908KB/s)

So, the framerate on the problem file is 30 fps, while the file with no problems is 24 fps. I am not sure what the correct framerate should be for the problem file.

Any ideas?

[guns1inger]

At a guess, the first file comes from an NTSC video source, while the second comes from a film source. Both of these, when played on your television and settop player will play at 29.97 fps. Both of these are valid framerates.

What makes you think the video is playing faster than this ?

[zeretul1]

I am not sure what framerate it is playing at, but it is too fast for the original source. All the people move too quickly, and the audio falls behind.

I did find an option in the "Video" pulldown menu under framerate that says "Change so video and audio durations match", and that helped slow down the video, but the audio still need to be synced up.

So, my video plays too fast normaly, but I can slow it down, while the audio is still behind, despite the fact that I change the Audio Skew.

Any ideas?

[zeretul1]

Is there another program that can compensate for this, or should I rip the chapters again?