[whatwg] Displaying poster for audio in <video>
simonp at opera.com
Tue Nov 29 23:31:50 PST 2011
On Tue, 29 Nov 2011 20:18:40 +0100, Tab Atkins Jr. <jackalmage at gmail.com>
> On Tue, Nov 29, 2011 at 5:54 AM, Jeroen Wijering
> <mail at jeroenwijering.com> wrote:
>> Hello all,
>> Playing audio in <video> succeeds consistently across browsers, as
>> described in the spec:
>> "Both audio and video elements can be used for both audio and video.
>> The main difference between the two is simply that the audio element
>> has no playback area for visual content (such as video or captions),
>> whereas the video element does."
>> However, poster display behavior varies between browsers. Some browsers
>> (FF, IE, Opera) will keep the poster up after an audio file has
>> started, other browsers (Webkits, WinPho) clear the poster, which
>> results in a blank area:
>> It would be good if this behavior could be rationalized and/or
>> addressed in the spec. My preference would be to continue showing the
>> poster image if the media file has no (active) video track - a poster
>> image looks much better than a blank area.
>> Ideally, this would also be the case for "fullscreen" playback on
>> mobile devices.
> I agree that keeping up the poster frame is the more useful behavior,
> and that this should be specified in the spec.
It is already.
"When no video data is available (... the media resource does not have a
video channel), the video element represents the poster frame."
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