This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
Obsolete since Gecko 30 (Firefox 30 / Thunderbird 30 / SeaMonkey 2.27 / Firefox OS 1.4)
This feature is obsolete. Although it may still work in some browsers, its use is discouraged since it could be removed at any time. Try to avoid using it.
The VideoPlaybackQuality.totalFrameDelay read-only property returns a double containing the sum of the frame delay since the creation of the associated HTMLVideoElement. The frame delay is the difference between a frame's theoretical presentation time and its effective display time.
Syntax
value = videoPlaybackQuality.totalFrameDelay;
Example
var videoElt = document.getElementById("my_vid");
var quality = videoElt.getVideoPlaybackQuality();
alert(quality.totalFrameDelay);
Specifications
| Specification | Status | Comment |
|---|---|---|
| Media Source Extensions The definition of 'VideoPlaybackQuality.totalFrameDelay' in that specification. |
Candidate Recommendation | Initial definition. |
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 23 | 25.0 (25.0)[1] 30.0 (30.0)[2] |
11[3] | 15 | 8 |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | 4.4.4 |
Not supported |
Not supported | 11 | 30 | Not supported |
[1] Available after switching the about:config preference media.mediasource.enabled to true. In addition, support was limited to a whitelist of sites, for example YouTube, Netflix, and other popular streaming sites. The whitelist was removed and Media Source Extensions was enabled by default in 42+ for all sites.
[2] Obsolete since Gecko 30.
[3] Only works on Windows 8+.
See also
- The
HTMLVideoElement.getVideoPlaybackQuality()method for constructing and returning this interface. MediaSourceSourceBuffer