Slow Motion video

[dawittyman]

Hi all.. I have a few mpg, avi files which I want to convert to slow motion video. (ie which when played on any player will be played in slow motion).
Any ideas re: which software is good for that??
Thanks in advance..

[ZiGGY909]

Adobe Premiere.

[guns1inger]

Vegas - drop it on the timeline, Ctrl and drag the end point out. Of use velocity envelopes to vary the speed up/down/backwards if necessary.

The best software solution is after effects and this plugin http://www.realviz.com/products/rtpro/index.php

[Cornucopia]

You could also try just changing the stated fps in the header. Try AVIFrate.

Scott

[dawittyman]

thank you all... I will look into these

[trolltuning]

The way I do it is with an Avisynth script. That way I can also slow down the sound so it stays in sync but maintain the pitch of the sound so it is easier to understand. Then you just feed the script to your encoder, wait until it's done and voila. If you choose this route I'll be happy to post the script for you. I encode with CCE Basic but you could also use TMPGenc or one of the free encoders. Other than that you just need Avisynth and DGindex both free. It's easy to use this script on different files-you just change the name in the script. It's set for 50% speed right now but it's not hard to change it.

[dipstick]

trolltuning wrote:

If you choose this route I'll be happy to post the script for you.

Go ahead and post it.

[trolltuning]

Ok here are some scripts
Thanks to Iantri at doom9.org
For interlaced:

Directshowsource("D:\capture\myvideo.mpg")
Bob() # replace with your favourite higher-quality bobber of choice
AssumeFPS(29.97)
TimeStretch(tempo=50)

For progressive
Directshowsource("D:\capture\myvideo.mpg")
ConvertFPS(59.94)
AssumeFPS(29.97)
TimeStretch(tempo=50)


For PAL change 29.97 to 25 and 59.94 to 50
Change the path in the first line. I actually now use mpeg2source in the first line and audiodub. I'll post that this evening.
If the file you are starting with is an avi change directshowsource to avisource
The tempo =50 represents the 50% slowdown in the audio 100 would be regular speed. This line is the one that keeps the pitch of the audio constant despite the slowdown of the video.
This ratio should be the same as the AssumeFPS number divided by the ConvertFPS number (and multiplied by 100)

[dipstick]

Thank's.............. it works pretty good.

[trolltuning]

Here's the way I like to do it now. You make the d2v file with dgindex.exe available at http://neuron2.net/dgmpgdec/dgmpgdec.html
You need to download mpasource filter from http://www.avisynth.org/warpenterprises/
and install it in your Avisynth plugin directory
Note that two of the lines in this script are commented out.


video=Mpeg2source("D:\1elements\Mario1.d2v")
#video=video.TemporalSoften(4,4,8,15,2)
audio=mpasource("D:\1elements\Mario1.mpa")
audiodub(audio,video)
#Bob() # replace with your favourite higher-quality bobber of choice
ConvertToYUY2(interlaced=true)
ConvertFPS(59.94)
AssumeFPS(29.97)
TimeStretch(tempo=50)