[whatwg] Scripted <video> query proposal
eric.carlson at apple.com
Fri Aug 22 06:46:54 PDT 2008
On Aug 21, 2008, at 8:56 PM, Robert O'Callahan wrote:
> On Fri, Aug 22, 2008 at 2:57 PM, Eric Carlson
> <eric.carlson at apple.com> wrote:
> It is possible to build a list of all types supported by QuickTime
> dynamically. WebKit does this, so Safari knows about both the built
> in types and those added by third party importers.
> You mean this
> which calls this?
Yes, and the Windows version is here: http://trac.webkit.org/browser/trunk/WebCore/platform/graphics/win/QTMovieWin.cpp#L695
> Does that actually enumerate all supported codecs? Looking at the
> Webkit code and the Quicktime docs, it looks like it's just
> enumerating file/container types.
Indeed the code enumerates movie importers and just builds a list
of the MIME types supported by QuickTime, so it can not yet deal with
a type string with an RFC4281 "codecs" parameter. We are working on
that requirement, but the current approach is still useful because the
"codecs" parameter is not yet widely used.
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