YouTube recently switched to a widescreen format and while browsing around to test out the quality I was still shocked at the poor performance of Flash on a Mac, specifically with video. The playback is jerky and constantly pauses in both Firefox and Safari. Restarting the browser helps a bit but by no means solves the problem.

I had recently downloaded Flash Player 10 (10,0,12,36 at the time of this post) and noticed a slight improvement in playback and performance but still not what I would consider acceptable for video. Ars Technica published an article in October benchmarking Flash Player 10. On a Mac Pro, Flash 10 used between 25% and 75% of CPU resources. On the same hardware running Windows it used 6% CPU. On my MacBook Pro 2.33GHz I see between 30%-45% CPU usage watching YouTube. The difference in performance here is enormous and I assume is the result of a product coded for Windows first and then ported to the Mac.

I haven’t been able to find any peformance tweaks that would improve video playback but I did find a bug reported against Flash 10 for poor performance on the Mac in the Adobe Flash bug tracker.  Register a bug tracking account and vote it up please.

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COMMENTS / 2 COMMENTS

im using flash 10 player on my powerbook g4, 1.67ghz, 2gb ram computer. in safari, video is stop/start whereas in firefox, it is just about ok..

steve added these pithy words on Jan 04 09 at 1:03 pm

Steve, it always seems to be “just about ok” no matter what version and what Mac it’s on. If you use Activity Monitory where is your CPU at? I also find (using iStatsMenu) that the disk is constantly getting hammered while watching video. I don’t think it’s swapping but perhaps buffering to disk?

mglenn added these pithy words on Jan 04 09 at 1:07 pm

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