15fps conversion causes jerky video

[vbug]

You can see at the beginning it jerks compared to the original. It does this every couple seconds.
http://www.youtube.com/watch?v=_prnQ6DcyQU (original (http://www.youtube.com/watch?v=6tyVYcobbTc))

P.S. It is 15fps because that is what the iriver U10 supports.

And I've attached the VDub processing settings.

[setarip_old]

Hi!

Do you have a question?

[vbug]

yes, how do I make 15fps smooth?

[scharfis_brain]

there is no way...

[LoRd_MuldeR]

Down-sampling the framerate unavoidably destroys temporal information. Hence lowering the framerate will result in "jerky" motion.

The more you lower the framerate, the more "jerky" it will look. That's it.

[CWR03]

It's difficult to see since there are no long, slow pans, but I do see the "skip" every few seconds. Instead of re-encoding to 15 FPS, you can just drop every other frame and lose no quality of image.

Instead of uploading to YouTube (which re-encodes a second time and doesn't show us the true original), use a hosting service to share a clip from the original. Rather than attach your log, include it wrapped in < code > tags.