XviD to PAL DVD problem

[chuckfishman]

I'm having a problem. I have an XviD that was 23.976 fps. I have converted it with VirtualDub to 25 fps and have converted the soundtrack as well, but when trying to convert it to 25 fps MPEG2 in TMpgEnc, the resulting file is still just as jerky as if I'd used TMpgEnc to convert it straight from 23.976 fps to 25 fps. Any help would be gratefully accepted.

[FulciLives]

When you play the XviD back on your computer (the original XviD file) does it play smoothly or is it jerky?

The reason why I ask is that I see a lot of XviD files at 23.976fps that are done incorrectly. What you must realize is that most NTSC sources (oter than some DVD sources) are 29.970fps and not 23.976fps. Now there is a way to go from 29.970fps to 23.976fps but this method (called an Inverse Telecine or IVTC for short) is a method that cannot be done to all NTSC sources that are 29.970fps ... also even when it is proper to go from 29.970fps to 23.976fps the process is "tricky" and can be done poorly or incorrectly.

So if the IVTC was done when it should not have been or if it was done poorly the original XviD will appear jerky.

So in short make sure it is not the source that is the problem.

If you feel that the source is A-OK then please describe in detail how you did the 23.976fps to 25fps conversion and the details of your TMPGEnc encode. Perhaps with enough detail someone can pick up on what you did wrong and correct you accordingly.

- John "FulciLives" Coleman

[chuckfishman]

The XviD file is absolutely smooth, and I simply used VirtualDub, set to Direct Stream Copy and set the frame rate to 25 fps. The XviD produced via this is still perfectly smooth, but running at 25 fps. I then go into TMpgEnc and set it to PAL DVD 16:9, 6000 kbps CBR, and MP2 audio at 224kbps. The file that this produces is jerky, whether output as combined audio and video or elementary streams.