Join Date: Dec 2002
Quarter Pel, GMC, Bidirectionel Encoding etc
I just have a few questions about the DivX 5.02 codec regarding it's advanced functions like GMC, Quarter Pel etc. Can someone explain what these things do (i tried to find it on doom9.org and divx.com and i did but it was very brief and not very clear).
Well what i'd like to know now what exactly Quarter Pel, GMC (Global Motion Compensation) and Bidirectional encoding does. Also can someone explain what Psychovisual enhancements do, and which setting to use; Light, Normal and Strong. For the decoding part: what does "Film Effect" mean?
tnx in advance
CD Freaks Member
Join Date: Jul 2002
Location: Alberta, Canada
here we go folk
Join Date: Dec 2002
tnx for your explanation, guess i didn't search long enough
Does anyone has first-hand experience in using these functions, and could you recommend using Quarter Pel, GMC and Bidirectional encoding? And does it save you a lot of space? For the psychovisual enhancement; i heard some people saying that it screwed their video!! Does anyone has experience with this function? And still the decoding part; what does "Film effect" mean?
Last edited by theunbeatable; 20-01-2003 at 21:14.
Join Date: Nov 2001
Using GMC and B-Frames is probably a good idea, Using Q-Pel probably wont help that much, but it makes the video slow in decoding, so it's porbably not worth it.
Psy enhancements are no longer broken, so it should be fine to use, though I wouldn't recommend it except at low bitrates.
Film effect adds the sort of effects you see in the movies, like grain. It doesn't improve the video, but people sometimes like them better. Sort of like how some people prefer LP's to CD's because they are used to the artifacts of them.
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