On Fri, 13 Jan 2012 01:53:23 +0100, Aryeh Gregor <[email protected]> wrote:
On Thu, Jan 12, 2012 at 12:46 PM, Francis Boumphrey
<[email protected]> wrote:
e.g. <video src='myvideo.mp4' controls>
and my user agent does not support the format, all I get (in my
versions of
Opera and Firefox) is a blank screen. No message (as I would get with
<embed>) and as far as I can see there is no way for me as an author to
know that the video is not being played so I cannot code a 'write
around'.
Boris answered the rest of your questions, but here's a way to detect
errors:
data:text/html,<!doctype html>
<video src='nonexistent.mp4' controls onerror='alert("error")'></video>
If you use <source>, the error event is fired at the source element
instead and doesn't bubble (why not?), so you have to put onerror on
the source element instead.
Or use a capturing event listener.
I don't know why UAs don't provide their own error messages, though.
They provide error icons for failed image loads.
I agree that we should do something, but it would be limited to <video
controls> as <audio> doesn't have a rendering area at all and for <video>
without controls it could interfere with the scripted interface. For
<audio controls> you could always make the controls look "dead" of course,
to make it more clear that there was a problem.
--
Philip Jägenstedt
Core Developer
Opera Software
