30% of dropped frame on 1080p60fps video on Linux |
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Issue descriptionVersion: 55.0.2859.0 OS: Linux There are more than 30% of dropped frame on 1080p60fps video on YouTube (both H264 and VP9). This is a recent regression. It regress somewhere between 54.0.2832.2 and 54.0.2840.27. This issue only repro on Linux. Thought the dropped frame number is very high (e.g 408/1231), the playback quality is not obviously bad, no stutter or choppy video/audio is observed. What steps will reproduce the problem? (1) navigate to either of these two videos http://www.youtube.com/watch?v=SFeA13_15-M http://www.youtube.com/watch?v=MbiOazijZVQ (2)switch to 1080p60fps (3)bring up Stat for Nerd What is the expected output? dropped frame is reasonable What do you see instead? dropped frame is about 30% of decoded frame, e.g 500/1548
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Sep 20 2016
It repro on beta already (54.0.2840.27). I can bisect after I finish test pass.
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Sep 20 2016
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Sep 20 2016
Graphic performance on my linux system is not great in the last few days -- so I think there may be some bigger issue going on. Hopefully the bisect will reveal something interesting, +graphics folk.
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Sep 22 2016
It seems weird. I tried to install the same build (54.0.2840.27) as stable instead of beta or dev channel, the dropped frame number becomes very normal, e.g, 33/3349 Is it possible the stable build is signed?
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Sep 29 2016
I still see this issue on 55.0.2873.0. Sorry I am unable to bi-sect to the possible regression build though.
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Sep 29 2016
Nothing we can do without a bisect or repro. You should report feedback in YouTube though when you see this in case it's a bad experiment.
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Jan 9 2017
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Feb 7 2017
Moving old issues out of Internal>Graphics to delete this obsolete component ( crbug.com/685425 for details) |
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Comment 1 by dalecur...@chromium.org
, Sep 20 2016