- From: <bugzilla@jessica.w3.org>
- Date: Tue, 28 Jan 2014 16:47:30 +0000
- To: public-html-bugzilla@w3.org
https://www.w3.org/Bugs/Public/show_bug.cgi?id=17673 --- Comment #39 from Mark Watson <watsonm@netflix.com> --- This comment compares the idea of comprehensive additional MIME type parameters to the alternative of a registry for "short named" for the container/codec/keysystem/protection scheme. Additional MIME type parameters would give us something like video/mp4;codec=avc1.xx.xx;keysystems=<ks2>,<ks2>;protection=cenc This could be used with isTypeSupported, or even with canPlayType, to determine support for a specific container/codec/keysystem/protection combination and in the needkey to indicate the combinations supported by both file and browser (this implies the browser doing the PSSH <uuid> -> EME keysystem name mapping). Alternatively, we could have - as pal suggested - a registry which defines short names for the above discussions. e.g. mp4-pr-avc-cenc = mp4 file, PlayReady, AVC, CENC wemb-wv-vp8 = WebM files, Widevine, VP8 etc. In this case also the UA needs to parse the PSSH boxes to identity which keysystems are supported by the file. The proposals are in some sense equivalent, except that with the former UAs can introduce support for a new combination and this will 'just work' with existing apps. For the latter the apps would need to be updated to support the new registered string. -- You are receiving this mail because: You are the QA Contact for the bug.
Received on Tuesday, 28 January 2014 16:47:31 UTC