W3C home > Mailing lists > Public > public-media-capture-logs@w3.org > June 2015

Re: [mediacapture-main] How is adaptive frame rate to be handled?

From: jan-ivar via GitHub <sysbot+gh@w3.org>
Date: Thu, 18 Jun 2015 16:00:37 +0000
To: public-media-capture-logs@w3.org
Message-ID: <issue_comment.created-113201842-1434643236-sysbot+gh@w3.org>
> MediaCapabilities should show 10-30 (unless the drivers support 
downsampling, in which case it might be 0-30).

Agree.

> getUserMedia({video: { frameRate: { min: 20 }}}) should succeed if 
the camera's presently sending 30.

At the time gUM is called the camera isn't necessarily sending 
anything, is it? Are you saying how the camera *would* perform under 
present lighting conditions is observable without turning on the 
camera (and the light)?

> MediaSettings should return what the camera's drivers are currently 
giving. (I assume this is observable)

Is a live measurement expected here (and if so over what amount of 
time), or is there some internal driver attribute I'm missing? In 
[this firefox fiddle](http://jsfiddle.net/3hk82d31) which measures it 
in JS over time the frame rate seems to fluctuate a little bit.

-- 
GitHub Notif of comment by jan-ivar
See 
https://github.com/w3c/mediacapture-main/issues/193#issuecomment-113201842
Received on Thursday, 18 June 2015 16:00:39 UTC

This archive was generated by hypermail 2.4.0 : Friday, 17 January 2020 16:27:26 UTC