Slow down (or speed up) video

[brendt]

I have a 30 second video that I want to "stretch" to 90 seconds. Did a bunch of searching in the fora here, but haven't seen anything. How do I do it?

Alternatively, I may wind up with a long video that I want to shorten (like time-lapse). If that's a different solution, I'd appreciate knowing about it.

(I don't care about the audio -- I'll be replacing it)

[Sugar]

What editing software do you have.

This is easily done in Premiere.

[duhmez]

First let;s assume it;s ntsc, if its pal modifiy the settings ccordingly.

Install avisynth. Then make a txt file with extension .avs
Int he file have it look like this
avisource=("c:\file.avi").convertfps(89.91).assume fps(29.970)
Load this av file into your encoder, it will be 3 times as long.

Where c:\file.avi is the full path to the avi file.
(of pal make the first number (75.000) and (25.000) respectively.

[johns0]

If its avi load the file into virtualdub and select direct stream copy for video and change the framerate from say 23.976 to 72 fps and then save as another avi.

[duhmez]

If its avi load the file into virtualdub and select direct stream copy for video and change the framerate from say 23.976 to 72 fps and then save as another avi.

Do NOT do this. this will make it take up 1 third of a second, not 3.

Do it my way.

[johns0]

Sorry,my mistake,was thinking in reverse,have to change from 29.97 to 9 frames a second.

[Renegade6]

I use Ulead Video Studio 7 and you can edit the speed of any particular you want, whether to speed it up or slow it down. I have the full package,
I believe you can do the same with the trial version as well. I hope this
helps