All graphs for this bug:
  https://chromeperf.appspot.com/group_report?bug_id=639751

Original alerts at time of bug-filing:
  https://chromeperf.appspot.com/group_report?keys=agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgrv34rwoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7rL_tAoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7oWvogoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7tbTrQoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7rL_tAkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgrr2sowkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7qanuQsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7uCSuwkM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgrr2sowsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7vHqswoM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgruKjsgsM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICg7sXt9wgM,agxzfmNocm9tZXBlcmZyFAsSB0Fub21hbHkYgICgruKUtAsM


Bot(s) for this bug's original alert(s):

chromium-webrtc-rel-linux
chromium-webrtc-rel-mac
chromium-webrtc-rel-win8

Hey nisse@, we are seeing some huge performance changes in the 'browser_tests/Max_repeated' metric after your change in https://codereview.chromium.org/2244213002.

Could you have a look?

Added some more alerts to the graphs.

Reduced received frame rate reproduced locally using Hangouts. Receiving side used stable Chrome, whereas sending side was tested using release build of this revision (https://crrev.com/5b9a4b339447b033ca52244a02c0bef17067385f) and the revision before (https://crrev.com/fce0b57ea91c0bbb263601906caf389ecf41c277).

hlundin@: Some of the alerts in https://bugs.chromium.org/p/chromium/issues/detail?id=639744, e.g. the changes in 'Unique_frames_count', may be related to this one.

I've now tried running the tests locally. I get lots of warnings like

[1:14:0822/153830:WARNING:video_capture_input.cc(79)] Same/old NTP timestamp (3680861906110 <= 3680861906110) for incoming frame. Dropping.
[1:14:0822/153830:WARNING:video_capture_input.cc(79)] Same/old NTP timestamp (3680861906042 <= 3680861906042) for incoming frame. Dropping.

I'll revert while investigating.

Issue 639744 has been merged into this issue.