1302059 - Linux getUserMedia does not support all modes of a camera

Status: RESOLVED FIXED

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

Description

[Andreas Pehrson [:pehrsons]]

I hear reports that a camera that supports resolutions like 640x360 does not work with that resolution for Firefox getUserMedia.

On Ubuntu you can check for modes supported by your camera by installing v4l-utils and then running `v4l2-ctl --list-formats-ext`.

Our backend code hardcodes which resolutions to support, much like the old qtkit implementation on Mac did but a bit better: http://searchfox.org/mozilla-central/rev/950e13cca1fda6507dc53c243295044e8eda4493/media/webrtc/trunk/webrtc/modules/video_capture/linux/device_info_linux.cc#285

Shouldn't be too hard to fix? The code of v4l2-ctl for reference is here: https://git.linuxtv.org/v4l-utils.git/tree/utils/v4l2-ctl

Comment 1

[Munro Mengjue Chiang [:mchiang] Be Mozillian since 1/19/2018]

Attachment: Bug 1302059 - use VIDIOC_ENUM_FMT & VIDIOC_ENUM_FRAMESIZES to query supported format & resolution;

Review commit: https://reviewboard.mozilla.org/r/80046/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/80046/

Comment 2

[Randell Jesup [:jesup] (needinfo me)]

Comment on attachment 8793251 [details]
Bug 1302059 - use VIDIOC_ENUM_FMT & VIDIOC_ENUM_FRAMESIZES to query supported format & resolution;

https://reviewboard.mozilla.org/r/80046/#review79036

Thanks!

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/3b9eb7fee10b
use VIDIOC_ENUM_FMT & VIDIOC_ENUM_FRAMESIZES to query supported format & resolution; r=jesup

Comment 4

[Carsten Book [:Tomcat]]

https://hg.mozilla.org/mozilla-central/rev/3b9eb7fee10b