Hi,

I always wondered why quicktime is such a pain when playing back 1080p content!
The trailer i used is the latest bond, this one stutters a bit on my hackintosh with a 4 Ghz E8500 and a QI/QE enabled ATI x1900GT! CPU usage is around 70%!!!! WTF?

Now I played it back within Itunes by accident because I downloaded a hd movie trailer and like magic it seems like some sort of hardware acceleration kicks in, all 1080p material is completely smoooth and the cpu usage is around 15%! You can copy trailers into the folder and they show up in itunes and you can play them back.

Is Itunes using a different renderer or what happens here?

When using VLC perfectly smooth at around 20% CPU!

Anybody can verify this? I am on a 1900x1200 screen so the 1080p content is played back natively.

Quicktime is just pure crap.....it's about time they switch to quicktime x and get those modern GPU's working!!!!! Damn!

I've heard that before about Quicktime. Why not just use vlc or like you say, itunes, until QT gets updated? Is there an advantage to using QT? I guess you could edit with QT pro, but why would you do that?

Perian makes quicktime a lot better, but it still seriously lacks features. I would highly highly recommend MPlayer OSX Extended. After testing many players for OS X, my opinion is: mplayer osx extended >>>> Quicktime + perian >> VLC >>>> quicktime.

http://mplayerosx.sttz.ch/

Does Perian help with the HD playback? Apple sells the Apple TV to play video HD tv via HDMI, by using itunes. Since they only cost $200 refurb, is that the best way to go? Just transfer movies to it by wifi, and leave it connected to the TV for playback, and maybe use an ipod or iphone for the remote. Seems like a good way to watch video.

Perian does seem to help with all playback, although the quicktime player is junk. Quicktime + perian used a few percentage higher of CPU on my system compared to mplayer osx extended when testing a 1280x720 h.264 + aac video. Mplayer OSX-E was around 7 - 10% on my q9550 clocked at 3.4ghz. I don't have any 1080p videos to test though.

I´ve had a similiar problem.
Installing an older version of QT solved the prob...


Rgds.

Oh well...I'll just keep installing Quicktime updates and see what happens with 1080p playback....thank god there are some alternatives!