[whatwg] Displaying poster for audio in <video>

[Jeroen Wijering]

On Nov 30, 2011, at 8:31 AM, Simon Pieters wrote:

> On Tue, 29 Nov 2011 20:18:40 +0100, Tab Atkins Jr. <jackalmage at gmail.com> wrote:
> 
>> 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:
>>> 
>>> http://goo.gl/0g77d
>>> 
>>> 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."
> http://www.whatwg.org/specs/web-apps/current-work/multipage/the-video-element.html#attr-video-poster

That covers it indeed, thanks. I'll file a bug with webkit then ;)

- Jeroen