Closed Bug 1421706 Opened 2 years ago Closed 2 years ago

recent regression - quick build up of latency on webrtc calls using Firefox Nightly


(Core :: WebRTC: Audio/Video, defect, P2)




Tracking Status
firefox-esr52 --- unaffected
firefox57 --- unaffected
firefox58 --- unaffected
firefox59 --- fixed


(Reporter: mreavy, Assigned: mchiang)



(Keywords: regression)

For me, starting late Tuesday, I see a large build of latency on webrtc calls using Firefox Nightly.  I'm using MacOS. This was not a problem last week.  I am experiencing this on every call.
Rank: 15
Priority: -- → P2
13:46.18 INFO: Narrowed inbound regression window from [db88252d, 88e7018a] (3 builds) to [db88252d, 213c2c20] (2 builds) (~1 steps left)
13:46.18 INFO: No more inbound revisions, bisection finished.
13:46.18 INFO: Last good revision: db88252d490fec2c67c0051172419b46e03cf9ee
13:46.18 INFO: First bad revision: 213c2c200c08bee1cb84eb17a1b0ccb92dbb923c
13:46.18 INFO: Pushlog:

Bug 1388219 - down scale camera output frame to the target capability. r=ji
Fixed by backout.
Assignee: nobody → mchiang
Closed: 2 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla59
For Munro's benefit, it didn't reproduce for me in a local-loop (same machine) call; it had to be from a different machine apparently, so here's how I reproed it (using my phone as machine #2):

 1. Using a headset on my android phone, open on 57 fennec and share cam+mic
 2. Click the mute icon in so audio only goes one way.
 3. Then on the target desktop machine, open in Nightly, share cam+mic, and talk

Expected result:

I hear myself in the headset without delay.

Actual result:

I hear myself in the headset on a 1-2 second delay.
Flags: needinfo?(mchiang)
Flags: needinfo?(mchiang)
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