Divx need help

[HC_Daedalus]

I have a question: I have a movie with 23.976 fps, i'm trying to make it 25 fps or higher, how do i do this using virtualdub.

[Tommyknocker]

When the video is loaded, select Video-->Framerate. Select Change to...and select your new framerate and save. Be careful going too high using this method, altering the framerate too drastically may cause jerky video. Good luck!

[jkl]

changing the framerate in vdub to a higher framerate will cause the audio to be longer then the video. i changed the framerate once on a 45 minute video from 23.980 to 23.976(only a .04 difference). the video was gradually slower than the audio that when i get to 20 minutes in, you see a slight gap in sync. but by the end of the clip, it was 1.3 seconds behind.
now think about what it will be if you speed the video up by 1.024 frames per sec(for you every 25 seconds will be one second "more" of audio lag).

to fix my lag, i had to extract the audio as a wave and then load it into soundforge and shrink the audio by about 1.3 seconds(about 99.9995% of original). anything over 98%(depending if its a short clip) will have a noticeable change in pitch.

[edsmith77]

JKL,
I might impose on this thread for a very similar type question. I am converting many old VHS tapes to VCD/SVCD depending on the original quality. Anyway, being relatively new, and doing lots of experimenting I found that with my ATI Rage Fury Pro capture card I was getting some macrovision scan lines in my captures. Ignoring that for a moment, I was able to capture at just about any frame rate, resolution without frame loss or anyother side effects. However, those little green scan lines go the better of me and I ran a program to block the Macrovision (which I got from ATI). Well to make a long story short, I can now only capture at 352x240 and not lose audio sych. If I go higher to say 480x480 it captures just fine except within 30 seconds the audio and video are out of sync QUITE NOTICEABLY. All of this is before going to tempgenc for rendering into vcd/svcd. Yet during capture all appears to be just fine. Could this be a setting problem that I have not gotten the input and output rates correctly matched.? Or why do I not have the problem at the lower resoultion that I have at the higher resolution.
Should I have set the input (source) as NTSC film but the output (capture) as NTSC???

Can you help??

Thanks,
Ed

[Tommyknocker]

We are not suppose to hijack someone else's thread. Please start a new thread, and I will try to answer. I will not however, be a willing part of your inadvertent breach of etiquette.

[edsmith77]

Mr TommyKnocker,
Please excuse my inadvertent breach of etiquitte. I wil start a completely new thread.
I was only tyring to keep related items / issues together since my problem seemed to be related.

Ed