View Full Version : VT5.2 not playing mov h264 smooth

10-18-2008, 01:58 AM
After upgrading to VT5.2 all our Mov files (H.264) movies are ot playing smooth. There are plaing 10-12 frames, then pause for a split secong, plays 10-12 frames, the pauses, etc.

Have re-installed all, incl. Quicktime

04-16-2009, 04:29 PM
Same problem here. We have hundreds of quicktime videos (h.264) that used to play fine, now they don't play smooth at all after the 5.2 update.

Please help!!!

04-16-2009, 04:33 PM
I noticed on our system, which has 4 cores, that while the quicktime movie is playing (jerky) the total CPU usage is steady at around 25%.

I opened up the task manager and set the processor affinity for VT5 to single CPU. Sure enough, that core's CPU usage was 100%.

So VT5 is doing something in the QuickTime decode process in a single thread, and that task is slow enough to peg the CPU.

I notice that when I play the SAME video in QuickTime player, the cpu usage is very low, under 5%.

So what is VT5 doing? :bangwall:

Rich Deustachio
04-19-2009, 10:35 PM
Here is another thread about this same problem.