Originally Posted by kevindd992002
But you could always try with WF18.0.1 or FF 22.0a1 which you said you do not experience microstuttering with?
Ah, sure thing. Firefox 22.0a1 experiences 177 frame drops over the course of a 3:40 video. The drops appear to be random in nature but I have long expected such playback from Firefox in general, well before switching to Waterfox. As far as I'm concerned this level of playback is average for Firefox on YouTube.
Chrome, by comparison, experienced only two dropped frames on the same video. Again, I've come to expect this from Chrome on YouTube (seeing as they're both by the same company so of course they jive well).
Does that result help? Are there any other tests you wish to perform?
EDIT: On a whim, went and disabled the Chrome option 'continue running background apps after Chrome is closed' even though IIRC that's a Windows 8-only option, as some had reported it played funky with Firefox. I then restarted Firefox and tried the same video again. If I had to guess I would say the restart changed things more than the option in Chrome but your mileage may prove otherwise. For reference, the same video then had only 90 dropped frames.
EDIT 2: Even more fun! So since I had been testing YouTube in full-screen (because accelerated video rendering doesn't want to work in windowed mode) I switched back and noticed the dropped frames decrease sharply. On another whim I did two more tests in windowed mode this time, one with hardware acceleration enabled and the other without. Here are the results.
Without hardware acceleration and in windowed mode, FF 22.0a1 had 61 dropped frames.
With hardware acceleration in windowed mode, FF 22.0a1 had 10 (!) dropped frames.
Not sure what's going on with full-screen full-acceleration. Will have to test full-screen in pure software and see what happens.
EDIT 3: And as mentioned, did a test with full-screen in full software. Looked absolutely horrendous and dropped 69 frames. Not even going to bother posting a screenshot of the debug info because it was just ugly. However, did go back and test Chrome in windowed mode. That seemed to fix the two dropped frames and it achieved a perfect 0.
http://i.imgur.com/PObr5xV.jpgEdited by NomakeWan - 3/10/13 at 6:40am