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Issue 782433 link

Starred by 1 user
Status: WontFix
Owner: ----
Closed: Nov 2017
Cc:
mcasas@chromium.org
dalecur...@chromium.org
ddavenp...@chromium.org
mlamouri@chromium.org
posciak@chromium.org
Components:
EstimatedDays: ----
NextAction: ----
OS: Chrome
Pri: 2
Type: Bug



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Software Video playback on eve jankier than it should be.

Project Member Reported by dcasta...@chromium.org, Nov 7 2017 
With HW video decoders disabled on eve, SW video decoding regressed significantly starting from R64-10081.0.0.

I don't see anything suspicious CL in https://crosland.corp.google.com/log/10080.0.0..10081.0.0

I tried running ToT Chrome on R64-10080.0.0 and the video is smooth, as soon as I use a Chrome OS image > R64-10080.0.0, SW video decoding becomes really janky.

Surprisingly, this issue doesn't seem to be affecting Soraka.

Comment 1 by dcasta...@chromium.org, Nov 7 2017 

We tried tracing and we didn't notice anything taking more CPU time that usual.

We get many skipped frames even for tiny videos (640x360).
It seems like many videoframes are not making it to the compositor.

Comment 2 by mlamouri@chromium.org, Nov 8 2017

Cc: mlamouri@chromium.org

Comment 3 by yini...@chromium.org, Nov 14 2017

Components: -Internals>Media OS>Kernel>Video
this is specific on EVE Chromebook which media team doesn't have. give to CrOS team.

Comment 4 by posciak@chromium.org, Nov 14 2017 

Do we know if this is specific to eve? Which codecs/videos/tests/sites was this reproduced on? Thank you.

Comment 5 by dcasta...@chromium.org, Nov 15 2017

Status: WontFix (was: Untriaged)
I can reproduce this issue only on my evt device.
I reproduced it disabling HW decoders on youtube or crosvideo.appstop.com. I was testing SW decoding to NV12.

I couldn't reproduce it on a pvt device nor on soraka.
Closing it as wont fix.

Comment 6 by posciak@chromium.org, Nov 15 2017 

Thanks.

We haven't seen any spikes in dropped frames in this revision range in our perf tests: https://chromeperf.appspot.com/report?sid=b4d3cff9e4d0ac402cfa94bc9293a0dc6de83171c877f46784a6f9c5c46b0abc.
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