1306034 - Implement aspectRatio constraint for cameras

Status: NEW

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

Description

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

The spec (see URL) defines an aspectRatio constraint we should implement. It would help give a fitness distance boost to modes that fit a site's preferred aspect ratio, as well as limit modes to an aspect ration with min/max/exact.

Comment 1

[Bulk Bug Changes for mreavy's org]

Mass change P2->P3 to align with new Mozilla triage process.

Comment 2

[Alper Teke]

Any idea when will this be available in Firefox.

Comment 3

[Kevin Mathmann]

Is there any plan to implement the aspectRatio constraint?

All major browsers have supported this for at least 4 years, but in Firefox it is necessary to go through a hardcoded list of resolutions if you need a specific ratio. The constraint would be really helpful.

Comment 4

[Thomas Wisniewski [:twisniewski]]

Chrome and Safari will now both support aspectRatio on MediaStreamTrack as of WebKit preview 171.

Comment 5

[Jan-Ivar Bruaroey [:jib] (needinfo? me)]

With Firefox now supporting "crop-and-scale" (bug 1286945), having this constraint is more pressing. Up-prioritizing.

This gUM demo shows one way to preserve aspect ratio is to only constrain on width OR height. But e.g. on macOS if constrained only on height, there's a risk of ending up with a vertical mode (like 1080x1920). aspectRatio would help here.

ofc websites that constrain both width and height don't have this problem but still.