Hi all, which is according to you the best H264 decoding library. I read about CoreAVC what are the advantages rather than using FFMpeg or QuickTime (as a libraries) ? Are the differences in performance noticed only on high res videos? Thanks in advance bye

Basically, you don't wanna mess with QuickTime at all, since it's slow as hell. The average user will most probably use ffdshow. CoreAVC is recommended only if you're having a hard time decoding using ffdshow and you meet the .

ok, thanks again. I just read somewhere that QuickTime supports GPU decoding, is it the only one?

QT doesnt even support all Main Profile specs... but only a part...

uhm... i doubt it works.. since 8x8dct is HIGH profile... QT doesnt support HIGH profile, and no more than 1 (or 2 maybe?) B-Frame(s), plus other limitations i couldnt remember. that's it, unless they recently updated it to support all that stuff.

Do it the other way round : download an apple trailer -720p or 1080p) and use avinaptic to check the h264 metadata. You'll have the settings that Apple assumes to be playable by QuickTime on any/all platforms. essentially Baseline settings. cheers audyovydeo

I had no problem playing back these three mp4. QuickTime 7.4 and Mac OS X. p.s.: no, I don't have perian or avc1decoder installed. QuickTime is using his own h.264 decoder.

!!! Paraphrasing your post, you are saying (as Mac users always do) that I should dump my windoze machine and buy a Mac ;-) Jokes apart, it's true I always used QT for Win. I have yet to get it to play smoothly any high profile stuff, upto and including v 7.4. Glad it works fine at least on the Mac. cheers audyovydeo

ah! yep. the OSX version works perfectly but the Win version is a POC. since the thread starter has a PC with windows (coz he mentioned ), the advice is still correct. stay away from QT.

QT on OSX is definatly more optimized and pretty fast. The Windows version is the opposite.