Which PRO options lead to choppy playback??

[ToMmY]

Which of the following PRO options turned ON will cause the video to have choppy playback in scenes where the camera moves?
- B-frames (only)
- B-frames + GMC
- B-frames + QP
- B-frames + GMC + QP

Choppy playback is a decoder bug or is it a natural phenomenon of the PRO features? (Smooth playback option sometimes gives me freeze frames, though it seems to (but not perfectly) eliminate the choppiness).
Does this choppy playback happen with the ffdshow filter as well??

PS. Sorry if this has been asked time and time again, but the search option didn’t result in any satisfying topics.

Thankz…

[The Edge]

I have never found DivX5 Pro choppy at all.
I think it depends on the hardware as my laptop finds it hard to play back DivX5.

Edge

[ToMmY]

I have got an XP 1800+ so i have got plenty of CPU power!
CPU usage goes up to 50% with postprocessing.
My HDD is fast as well.
I think this problem exists with panning scenes.

[The Edge]

The power of search;)

dix5 choppy (http://forum.doom9.org/showthread.php?s=&threadid=23277&highlight=divx5+choppy)
Might be what you were looking for.

Edge

[OvERaCiD23]

GMC is the problem with choppiness. every movie i've encoded with it has choppy pan scenes, encoded w/o GMC the movie is fine. it's not a processing issue either with my computer, i have plenty of power. i get the same results with the DivX5 decoder and ffdshow. encode w/o GMC, you don't gain anything by using it. b-frames is the only useful Pro option IMO.

[DJ Bobo]

I agree with overacid.
Only Bidirectional Encoding is useful.

BTW, that's the ...th question about which options to use in DivX5 pro. Next time, please take the time to search in the forum.

[BoNz1]

Yes, if you are encoding a dvd or a source that isn't very noisy GMC will not help too much but if the source has a lot of noise it can. divx's 1/4 pixel doesn't work very well either I have noticed some small blocks when using it and when encoding cartoons it leaves a ton of little blocks everywhere rendering the video unwatchable. The b-frames tend to blur quite a bit but because they tend increase the compressibility so I use it almost all the time but if you are going for very high quality and if you are using a very high bitrate it is advisable to turn it off. I haven't noticed any problems with choppiness with using any of the pro features though.