slow footage 20% how?

[lancer]

I need to slow some footage down to get the correct pan speed.

I have a panning shot I am trying to fix.

basically, the cameraman panned too quick. I have the footage I want that runs at 25fps for 258 frames.

I need it to be 310 frames to fit the panning speed I want. that is a 20% slow down

now in Vdub I can make it 20fps, then convert it to 25fps but I am getting a slight judder every 5 frames or so, quelle surprise. is there any filter combination that is going to do this any better or have I got as far as I can on this and will have to reshoot scene?

preferably not due to cost etc.

[zilog jones]

This thread (http://forum.doom9.org/showthread.php?t=78808) might help you if it's interlaced video you're dealing with.

[lancer]

that's the problem, its 25fps progressive

[zilog jones]

Ah. With AviSynth you could try:

AviSource("blah.avi")
ConvertFPS(30)
AssumeFPS(25)

ConvertFPS blends the frames (VDub was probably just duplicating them), but it'll still be kinda jerky.

[foxyshadis]

A still pan with a normal lens (no fisheye) is pretty much the perfect candidate for motion compensation. It should retain maximum detail with no need for blurring.

mvtools 1.x has mvflowfps2, and motion (http://forum.doom9.org/showthread.php?t=101859) has motionprotectedfps. The latter is a wrapper that takes care of all the work, just call MotionProtectedFPS(30).AssumeFPS(25) and combine it with the rest of the video. Adjust to taste.

[lancer]

okay, where do I get mvtools v1.x from? the manoa link only leads to 0.9x versions and the actual developer site leads in a loop

[Wilbert]

Here: http://www.geocities.com/wilbertdijkhof/MVTools-v1.0.3.zip

[lancer]

thanks for that, will give it a whirl