MPEG in - Slow Motion Out

as5606 · 26th April 2004, 12:44

Does anyone know of software that will allow me to convert a selection of mpeg video files(vcd quality, about 2-10mb each) into the same video but in slow motion - perhaps 50% of the source files speed.

I understand the length of the footage will double and so will the size of the files after conversion but thats fine.

Cheers

as5606 · 27th April 2004, 13:40

That will be nobody then

Wilbert · 29th April 2004, 14:19

Hi, and welcome!

Looks like you will have to reencode it. I would use AviSynth for this:

DirectShowSource("file.mpg",25) # if original framerate = 25
AssumeFPS(12.5) # if original framerate = 25

You can ask specific questions in the AviSynth forum if necessary.

Do you also want the audio to be slowed down?

as5606 · 29th April 2004, 15:29

Hi Wilbert,

Thanks for that. The audio doesn't matter, its just the video. Basically, some captures from a video were done using Hauppauge WinTV using a PVR-350 and these grabs need slowing down to around half speed now that they reside as mpeg's on my hard drive. I have about 30 of them to do, will this software you mention do it relatively quickly or will it be a pain doing 30 of them?

26th April 2004, 12:44	#1 \| Link
as5606 Registered User Join Date: Feb 2004 Location: England Posts: 3	MPEG in - Slow Motion Out Does anyone know of software that will allow me to convert a selection of mpeg video files(vcd quality, about 2-10mb each) into the same video but in slow motion - perhaps 50% of the source files speed. I understand the length of the footage will double and so will the size of the files after conversion but thats fine. Cheers

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27th April 2004, 13:40	#2 \| Link
as5606 Registered User Join Date: Feb 2004 Location: England Posts: 3	That will be nobody then

29th April 2004, 14:19	#3 \| Link
Wilbert Moderator Join Date: Nov 2001 Location: Netherlands Posts: 6,364	Hi, and welcome! Looks like you will have to reencode it. I would use AviSynth for this: DirectShowSource("file.mpg",25) # if original framerate = 25 AssumeFPS(12.5) # if original framerate = 25 You can ask specific questions in the AviSynth forum if necessary. Do you also want the audio to be slowed down?

29th April 2004, 15:29	#4 \| Link
as5606 Registered User Join Date: Feb 2004 Location: England Posts: 3	Hi Wilbert, Thanks for that. The audio doesn't matter, its just the video. Basically, some captures from a video were done using Hauppauge WinTV using a PVR-350 and these grabs need slowing down to around half speed now that they reside as mpeg's on my hard drive. I have about 30 of them to do, will this software you mention do it relatively quickly or will it be a pain doing 30 of them?