Increase VideoConduit max bit rate?

NEW
Unassigned

Status

()

Core
WebRTC: Audio/Video
5 years ago
3 years ago

People

(Reporter: ekr, Unassigned)

Tracking

unspecified
x86
Mac OS X
Points:
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Firefox Tracking Flags

(Not tracked)

Details

(Reporter)

Description

5 years ago
The current VideoConduit has a maxBitRate parameter set to
2Mbps:

http://dxr.mozilla.org/mozilla-central/source/media/webrtc/signaling/src/media-conduit/VideoConduit.cpp#l786

When bbrittain and I were doing benchmarking, we noticed we were getting frame
drops because libvpx thought we were exceeding bandwidth in periods of high
motion. This effect will be less serious with desktop since it is set to compress
more aggressively, but we may still be getting frame dropping. Someone should
investigate.
So we've reduced max bitrates recently (by making them depend on resolution, with VGA getting max 1.3Mbps).  I question why libvpx was dropping frames on us instead of increasing quantization, but dropping works.  bbritain's work was a special case/usage
backlog: --- → parking-lot
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