Compatibility/Telemetry: Difference between revisions
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(→Video: Add some suggestions from Anthony Jones (via email)) |
m (WebKitCSSMatrix fits better as DOM) |
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==== CSS ==== | ==== CSS ==== | ||
* `display: table` with `max-width: 100%` on children. | * `display: table` with `max-width: 100%` on children. | ||
| Line 19: | Line 18: | ||
* Wrong mimetypes for JSON | * Wrong mimetypes for JSON | ||
==== JS ==== | ==== JS/DOM ==== | ||
* (When Possible) identify the js lib used against a DB of the latest versions of JS libs. (to understand the use of legacy code) | * (When Possible) identify the js lib used against a DB of the latest versions of JS libs. (to understand the use of legacy code) | ||
* Identify, count how many times `navigator.userAgent` is used on the Web and a couple of other related thing. | * Identify, count how many times `navigator.userAgent` is used on the Web and a couple of other related thing. | ||
* WebKitCSSMatrix usage See https://bugzilla.mozilla.org/show_bug.cgi?id=717722 | |||
Revision as of 23:51, 18 December 2014
Measuring web compatibility
This page tracks the telemetry measurements that the Web Compat team is tracking. See Telemetry for more information.
Bug 1109958 will serve as the meta tracking bug for all telemetry probes.
Possible telemetry probes
CSS
- `display: table` with `max-width: 100%` on children.
HTTP
- WAP (WML or XHTMLMP) content sent to Fennec users
- `Server:` name
- Redirection sequences
- Wrong mimetypes for images
- Wrong mimetypes for JSON
JS/DOM
- (When Possible) identify the js lib used against a DB of the latest versions of JS libs. (to understand the use of legacy code)
- Identify, count how many times `navigator.userAgent` is used on the Web and a couple of other related thing.
- WebKitCSSMatrix usage See https://bugzilla.mozilla.org/show_bug.cgi?id=717722
Video
- M3U8 src for <video>
- requestFullScreen vs requestFullscreen. See https://bugzilla.mozilla.org/show_bug.cgi?id=743198#c5
- format (ogg, mp4, h264, etc.)
- Ads before video and transition to video
- EME required
- geofencing for IP rights
- List of video providers (stats for understanding if we need to focus our contacts actions toward some specific people)
- List of JS libraries used for video players
- H.264 AVC profile info
- Flash-only video
- HTMLMediaElement.canPlayType()
- MediaSource.isSupportedType()
- Video dimensions
- Compressed video sample sizes
- Frame drops
- Hardware or software decoders
- Playing videos concurrently
- H.264 profile/flags/level
- Audio speaker configuration e.g. mono, stereo, 5.1