The finer points of frame serving

[buddycat]

I'm working with this one series of avis that apparently uses more cels/frames than your usual anime, so the the motion is smoother (the fps is still 23.976 or whatever). However, after I've run one through avisynth and used the 3:2 pulldown in TMPGenc, I still notice a slight jumpiness to the motion (I think the motion may be computer animation rather than cel animation). Also, in a couple of places, I'm noticing where it's really bright and maybe rapid action that the screen sort of "flickers" (best way I can describe it - I'm using non-interlaced mode). Otherwise, it all looks pretty nice.

So my questions:

1. Does the 3:2 pulldown in AVisynth work better than the function in Tmpgenc?
2. Is there any other way to make the motion sequences where more frames are used look less jumpy?
3. What the heck is that flicker?

[celtic_druid]

Anime can be a mix of film, pure NTSC and CGI 30fps content. The idea of a 3:2 pulldown is to encode 23.976fps, but playback at 29.97fps. Presumably if you do it in AVISynth then you would actually be encoding the full 29.97fps.

[FulciLives]

I see a lot of MPEG-4 AVI files of animation that was incorrectly IVTC'ed to 23.976fps

My guess is the problem exists in your "source" AVI and cannot be undone.

- John "FulciLives" Coleman

[buddycat]

Well, it looks smooth enough as an avi, but you could very well be right. Perhaps I'll investigate another source. This was acquired last year. By now there may be a better source out there. I supposed it maight be worth trying 3:2 with avisynth, but I think you're right -- te combination of cgi and 2d may be the problem.