Hi everyone.
I am using tmpg tp encode some films on my hard drive. if I encode in PAL, even using the best quality settins I sometimes get a slight jerky picture, which was not there in the raw avi file.  If I encode in NTSC its a perfect smooth picture, why should this happen?
Anyone else noticed this   Thanks

While PAL to NTSC can be done, it can produce less than satisfactory results.

PAL operates at 25 frames per second, while NTSC is 30 frames per second. PAL interlaces 50 lines alternating to the screen, NTSC is 60. The result is that there is a 10 line/5 frame per second difference between the two. So going from NTSC to PAL can sometimes cause the video to stutter due to the 5 frames a second that are missing from the PAL version of your video.

It\'s usually worse going from PAL to NTSC because of those same 5 frames. Since you cannot magically produce the frames that are missing, the conversion usually just takes 5 frames intermittantly from the PAL video and dupes them, so in 5 places in the video, you have the same frame twice. This can cause a very brief but sometimes noticable pause in the video.

NTSC uses both these fps. I don\'t know why (I think it\'s because both US and Japan use NTSC and it is slightly different).

Now about the other question, it has to do with your source. Click the ? mark next to the drop-down menu and you\'ll understand.