[whatwg] Video with MIME type application/octet-stream

David Singer singer at apple.com
Wed Sep 8 10:14:48 PDT 2010

what about "don't sniff if the HTML gave you a mime type" (i.e. a source element with a type attribute), or at least "don't sniff for the purposes of determining CanPlay, dispatch, if the HTML source gave you a mime type"?

On Sep 8, 2010, at 2:33 , Philip Jägenstedt wrote:

> On Tue, 07 Sep 2010 22:00:55 +0200, Boris Zbarsky <bzbarsky at mit.edu> wrote:
>> On 9/7/10 3:29 PM, Aryeh Gregor wrote:
>>> * Sniff only if Content-Type is typical of what popular browsers serve
>>> for unrecognized filetypes.  E.g., only for no Content-Type,
>>> text/plain, or application/octet-stream, and only if the encoding is
>>> either not present or is UTF-8 or ISO-8859-1.  Or whatever web servers
>>> do here.
>>> * Sniff the same both for video tags and top-level browsing contexts,
>>> so "open video in new tab" doesn't mysteriously fail on some setups.
>> I could probably live with those, actually.
>>> * If a file in a top-level browsing context is sniffed as video but
>>> then some kind of error is returned before the video plays the first
>>> frame, fall back to allowing the user to download it, or whatever the
>>> usual action would be if no sniffing had occurred.
>> This might be pretty difficult to implement, since the video decoder might consume arbitrary amounts of data before saying that there was an error.
> I agree with Boris, the first two points are OK but the third I'd rather not implement, it's too much work for something that ought to happen very, very rarely.
> -- 
> Philip Jägenstedt
> Core Developer
> Opera Software

David Singer
Multimedia and Software Standards, Apple Inc.

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