Speed up mpeg?

[_Alexander_]

Hi,

It's the first time I write here and I checked almost everywhere for an answer but didn't find anything (or I'm blind).

Is there any way to speed up a mpeg file?
I have some DVD's from Japan that I want to add a PAL track to that is 4% faster, obviously.

I have TMPGEnc Mpeg Editor 2 and I didn't see such an option for it. I also have TMPGEnc 4.0 XPress where I can change the frame rate but it didn't change the speed at all.

I appreciate any kind of help.

Thank you in advance,
Alexander

[Southstorm]

Are you familiar with AVISynth? If you are, one method is to use the AssumeFPS() command and insert the proper rate you want. You would have to index the Mpeg file with DGIndex first.

[_Alexander_]

Thank you for your reply.

Is there a guide or something for doing this?

I already had AVISynth installed but have never understood it, I also downloaded DGIndex but I understand about zilch of it.

[r0lZ]

IMO, it is easier and preferable to resample the audio stream (with Audacity for example) and remux it with the original mpeg video. No re-encoding, no video quality loss, and a lot faster.

[_Alexander_]

I frequently use Audacity, but what is resampling?.

And how du you remux it with the mpeg/vob?

Sorry I'm asking all these stupid questions, but I'm pretty new at working with mpeg. -__-

[r0lZ]

Audacity -> Effect -> Change Speed. The difficulty is to compute the right percentage to stretch the audio stream exactly. If you know the frame rate of the video stream and of the audio stream, use a calculator. ;)

You have to extract the video stream from the original MPEG file (demux) and then recreate a new mpeg with that video stream and your stretched audio stream (remux). Honestly, I don't know what is the best tool to demux and remux the streams, as I don't work with mpeg files often, but I suppose that you can do that with VirtualDub-MPEG. IIRC, it can do that in one pass. Just change the audio stream, and process the video without re-encoding it.

[Southstorm]

Are you talking about speeding up just audio, or do you want to speed up an mpeg file with both audio + video?

[_Alexander_]

To my knowledge VirtualDub-MPEG can only read MPEG but not export it. :(

But anyway, so you mean that I should basically slow down the audio stream and add it to the video?
I did that once before but I just had to slow the audio down 0.1%, this is about 4%, wouldn't it be noticable?

Edit: Southstorm, what I really want is to speed up the mpeg. I have anime DVDs from Japan and the US that I want to adda Swedish dub to.
But since I am terrible at AVISynth, I'll take what I can get. :)

Edit2: I don't want the Japanese track left, just add the Swedish. :)