Fixing Speed of Video (originally film)

[mark23]

I am digitizing some old vhs tapes for a friend. Some of them were 8mm transfers to vhs and the speed of the film is unnaturally fast and studders in places. There is no audio, just video. Wondering if there is a program that adjusts for this, or just trial and error with speed adjustments? If so, what programs would you recommend for this? I have a mac but can use Windows if necessary.

Thanks

[midders]

I suggest using AVISynth (http://avisynth.org/mediawiki/FPS). This has the advantage that it will give you a real-time preview of the results so that you can tweak it until you get it how you want. To save the changes you'll need to re-encode the video; I recommend HCEnc for making DVD compliant video or VirtualdubMod (with the Xvid codec) for making DivX avi.

A basic AVISynth script to get you started (requires AVISynth and FFDShow)

# AVISource works with most avis, but directshowsource works with almost any video source
DirectShowSource("my film.avi",audio=false)
ChangeFPS(29)

Slainte

midders