3fps to 25fps conversion

[Terka]

is there any way to convert 4fps to 25fps or 20fps using motion compensation and income "good looking" result? the imput is progressive.

[Mug Funky]

it might work for a talking head, but you'll never get the lipsync back.

[Zep]

motionperfect and framedoubler and MVflowFPS come to mind

also read this thread

http://forum.doom9.org/showthread.php?t=89601&highlight=framedoubler

[mdkusr]

Try DePan:

http://bag.hotmail.ru/depan/depan.dhtml

Using DePan for framerate change
DePan may be used as a tool for framerate converting and similar tasks.

For example, to change framerate with factor=1.5, from 16.6 fps progressive (old 8 mm film) to 25 fps, use script.

AviSource("kino.avi")
LoadPlugin("depan.dll")
i = ConvertToYV12()

data = DePanEstimate(i, range=1, trust=5)
f1_3 = DePan(i, data, offset=1./3)
b1_3 = DePan(i, data, offset=-1./3)
Interleave(f1_3, i, b1_3)
SelectEvery(6, 0, 1, 2)

It may by written as a function:

function fps2to3(clip) {
# change FPS from 2 to 3 (or 16.66 to 25, or 20 to 30 and so on), i.e. with factor=3/2
# uses global motion compensation
# input must be YV12 or YUY2 progressive (or separated fields probably ?)
data = DePanEstimate(clip)
f1_3 = DePan(clip, data, offset=1./3)
b1_3 = DePan(clip, data, offset=-1./3)
Interleave(f1_3, clip, b1_3)
SelectEvery(6, 0, 1, 2)
}

AviSource("e:\video.avi")
LoadPlugin("depan.dll")
ConvertToYV12()
fps2to3()

Here is a possible function for framerate converting (progressive) with factor=5/3, for example from 15 fps to 25 fps :
function fps3to5(clip) {
# change FPS from 3 to 5 (or 15 to 25, or 18 to 30 and so on), i.e. with factor=5/3
# uses global motion compensation
# input must be YV12 or YUY2 progressive (or separated fields probably ?)
data = DePanEstimate(clip)
t3_5 = DePan(clip, data, offset=-2./5)
t6_5 = DePan(clip, data, offset=1./5).trim(2,0)
t9_5 = DePan(clip, data, offset=-1./5).trim(1,0)
t12_5 = DePan(clip, data, offset=2./5).trim(3,0)
Interleave(clip, t3_5, t6_5, t9_5, t12_5)
SelectEvery(15,0,1,2,3,4)
}

AviSource("e:\video.avi")
LoadPlugin("depan.dll")
ConvertToYV12()
fps3to5()
Notes. There is more simple and general alternative method: try ChangeFPS with following DePanStabilize.

[Trixter]

I disagree with using depan for this. Wouldn't MVFlowFPS in MVTools be much better?