DivX ---> DVD/VCD (fps problem)

[chaiseylain]

Hi, I've had good read through all the guides I could find but couldn't really find any answers.

I have a whole bunch of DivX movies in NTSC fps format (ie. 23.976fps and 29.970fps). I want to convert these to DVD or VCD so I can watch them on my standalone DVD player. Unfortunately, my TV only accepts the PAL format. So someone has said I need to convert these 29.970 fps DivX movies into 25 fps DivX movies, after this I can then use TMPGEnc to convert it to the mpg files required to burn onto DVD or VCD right? So how do I convert a 29.970 fps DivX avi into a 25 fps DivX avi?

Any help is much appreciated.

[mcorpse]

TMPGEnc should automatically convert the framerate of the video for you when you tell it to encode as PAL.

[Craig Tucker]

So someone has said I need to convert these 29.970 fps DivX movies into 25 fps DivX movies, after this I can then use TMPGEnc to convert it to the mpg files required to burn onto DVD or VCD right? So how do I convert a 29.970 fps DivX avi into a 25 fps DivX avi?

Only convert/encode once, each time you encode you introduce a loss in quality so you should never encode more than once unless its absolutely necessary. There is no need to go from divx(ntsc) -> divx(pal) -> mpeg. Just go straight from divx(ntsc) -> mpeg.

[mats.hogberg]

First, extract the audio track with VDub.
Then, use AVIFRATE to change the fps to 25
Decode the audio to wav, and make it shorter (as the video will play faster) to 23.976/25 =0,95904 of original length, using WavWorks or the timewarp function in GoldWave.
Now, use this speeded up AVI as video source, and your shortened wav as audio source for your encoder.
If going from 29.970 fps to 25 fps, you use the same principle, but have to stretch the wav instead.

/Mats

[Andy149]

Personally i have not been able to convert 29 to 25fps as the sound has to be streched so much that it sound like its on a tape player with low batteries anyone been able to sort this problem out?

or is it unavoidable

[mats.hogberg]

That depends on the algorithm used in the application used to stretch the wav. It ought to be possible to stretch a sample while keeping the pitch. I thought that was what Goldwaves Timewarp did...

/Mats

[Andy149]

no i use goldwave and i has some problems, that among them. also sometime the time you enter into the time warp isnt always what it conmverts to sometime you get a few milliseconds out which causes sync problems towards them end.

[mats.hogberg]

You say that you can spot a sync drift of a few mS over a 2 hrs movie?
Try WavWorks - it's really fast, and has worked very well for me, even if I've only made 23.976 to 25 fps conversions.

/Mats

[yf2001usa]

I've been using this methode but i can see when i play the movie that it isn't flowing smooth.. is there a way to do something about that.

yf

[mats.hogberg]

What do you mean by "not flowing smooth"? If you mean a slight "jerk" every second or so, then you're most likely encoding at a different frame rate than the AVI you're feeding the encoder.

/Mats

[chaiseylain]

oh, some quite differing suggestions..

so does anyone know if it's as simple as using TMPGEnc and clicking on DVD(PAL) or must I go through the process stated by mats.hogberg

i believe i did try to convert a divx.avi using the avi file and audio wav from seperate sources into a .mpg file using the 'VCD(PAL)' button but the audio was completely out of sync with the movie (using TMPEGnc)