MediaRecorder's CBR setting causes really bad perceived video quality

RESOLVED FIXED in Firefox 53

Status

()

defect
P2
normal
Rank:
25
RESOLVED FIXED
3 years ago
2 years ago

People

(Reporter: pehrsons, Assigned: pehrsons)

Tracking

unspecified
mozilla53
Points:
---

Firefox Tracking Flags

(firefox53 fixed)

Details

Attachments

(1 attachment)

Assignee

Description

3 years ago
The reason for CBR is unclear. It seems more like a WebRTC setting where you have to account for available bandwidth. MediaRecorder records to a file though, so it doesn't have that constraint.

Just comparing CBR and VBR builds locally with musicvideodispenser.com, the difference is huge.
Assignee

Updated

3 years ago
Assignee: nobody → pehrson
Status: NEW → ASSIGNED
Rank: 25
Priority: -- → P2
Comment hidden (mozreview-request)

Comment 2

3 years ago
mozreview-review
Comment on attachment 8826235 [details]
Bug 1330676 - Use VBR in VP8TrackEncoder.

https://reviewboard.mozilla.org/r/104226/#review105106
Attachment #8826235 - Flags: review?(bechen) → review+

Comment 3

3 years ago
mozreview-review
Comment on attachment 8826235 [details]
Bug 1330676 - Use VBR in VP8TrackEncoder.

https://reviewboard.mozilla.org/r/104226/#review105366
Attachment #8826235 - Flags: review?(tterribe) → review+

Comment 4

2 years ago
Pushed by pehrsons@gmail.com:
https://hg.mozilla.org/integration/autoland/rev/00f3061cb568
Use VBR in VP8TrackEncoder. r=bechen,derf

Comment 5

2 years ago
bugherder
https://hg.mozilla.org/mozilla-central/rev/00f3061cb568
Status: ASSIGNED → RESOLVED
Closed: 2 years ago
Resolution: --- → FIXED
Target Milestone: --- → mozilla53
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