10.6.1 and H264 hardware acceleration with 9400M

[iBug2]

After I installed 10.6.1, my 17" uMBP doesn't play 1080p quicktime trailers if I use the 9400M chip. They play at really bad fps with QuicktimeX player. I use VLC to play them and they play as good as usual. So the 10.6.1 somehow broke the hardware acceleration part of 9400M for me. QuicktimeX player tries to accelerate the playback by hardware, which doesn't work, so it can't play them. VLC does it by CPU and it works.

I didn't have this issue with 10.6.

Anyone else with uMBP can test this out?

P.S. If I use the 9600 GT, they play nicely on QuicktimeX player as well as before.

 

[Bill Gates]

I have the same problem with my late '08 15" 2.66GHz MacBook Pro model MC026LL/A.

 

[AppleThis&That]

That's odd. My 24 "iMac has the 9400M and it runs very smooth at 1080p after the 10.6.1 update. I'm watching a trailer from Apple.com at the highest HD.

Are you letting the movie download before watching?

 

[flapperdink]

yea, my macbook with 9400m is playing the 1080p trailers just fine. must be an issue with MBPs only and the way the two memory controllers are handled.

 

[Bill Gates]

Everything seems to be OK now for me after a reboot.