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Old 25th November 2008, 00:45   #1  |  Link
rufsiany
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fast motion

What is the a good/easiest way of creating fast motion with Avisynth? I have an 1 hour video of the office interior taken from the tripod and want to speed it up to e.g 20seconds. I can do it in VirtualDub: menu -> Video -> Frame Rate -> (Change frame rate to (fps): 10000. Convert to fps: 25). But I would rater do it entirely within avisynth script. AssumeFPS()? ChangeFPS()?, ConvertFPS()? Which one to use? The doc. is rather vague on their purposes.
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rufsiany

Last edited by Guest; 25th November 2008 at 02:03. Reason: rule 12
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Old 25th November 2008, 00:59   #2  |  Link
linyx
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Say your source is 30 fps then AssumeFPS(60) would play it at 2x speed. So a few calculations should give you what you need.
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Old 25th November 2008, 02:51   #3  |  Link
Blue_MiSfit
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Right. Then changeFPS to decimate it down to your final frame rate. (30?)

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Old 25th November 2008, 02:59   #4  |  Link
linyx
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@Blue_MiSfit
Good idea. Never thought to change the framerate down again.
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Old 29th November 2008, 20:11   #5  |  Link
PeaceAnt
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selectevery(100) gives you 100x speedup

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