Quote Originally Posted by Board of Command
And it seems to be most prevalent in anime. I don't think I've ever seen this in normal film (non-animated).

I just checked the ef - Melodies OP, which is full of slow-moving horizontal and vertical panning, and all of it is perfectly smooth. The video is 23.976 FPS H264 decoded using ffdshow. This video I encoded is also perfectly smooth in slow pans, although it's 24 FPS instead of 23.976. The 23.976 number actually comes from 24000/1001, which is the standard frame rate for progressive NTSC film.

http://www.mplayerhq.hu/DOCS/HTML/en...-telecine.html

That shaking might actually be caused by the encoding process, where the encoder adjusted the frame rate by simply discarding frames from the original.
The encoding route was my guess after I downloaded that raw with better smoothness.
Alas as you said, it may well be very common for anime. I guess the guys who encode follow some tutorial lacking a warning for that phenomenon. I can't blame them, it's just that if they knew it could be so much better.

I had read about telecine, but before I had that soul eater ep with two version working very differently, I still needed to get some progress. Now I'm a little further.

Sadly I highly doubt there's a solution to get a smooth paning with a file encoded wrong.