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Bug 21296 - Clarify what poster frame means.
Summary: Clarify what poster frame means.
Status: RESOLVED FIXED
Alias: None
Product: WHATWG
Classification: Unclassified
Component: HTML (show other bugs)
Version: unspecified
Hardware: Other other
: P3 normal
Target Milestone: Unsorted
Assignee: Ian 'Hixie' Hickson
QA Contact: contributor
URL: http://www.whatwg.org/specs/web-apps/...
Whiteboard:
Keywords:
Depends on:
Blocks: 21872
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Reported: 2013-03-15 02:06 UTC by contributor
Modified: 2013-04-29 22:25 UTC (History)
3 users (show)

See Also:

Attachments

Description contributor 2013-03-15 02:06:49 UTC 
Specification: http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html
Multipage: http://www.whatwg.org/C#check-the-usability-of-the-image-argument
Complete: http://www.whatwg.org/c#check-the-usability-of-the-image-argument

Comment:
Clarify what poster frame means.

Posted from: 211.157.142.210 by kennyluck@csail.mit.edu
User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:19.0) Gecko/20100101 Firefox/19.0
Comment 1 Kang-Hao (Kenny) Lu 2013-03-15 02:16:53 UTC 
The APNG spec[1] uses the term "default image", which is probably what "poster frame" means here, but it's not at all clear. Perhaps the spec should mention "default image" here and link to [1] or otherwise explain "poster frame" by saying, say

  The poster frame of an image in an animatable image format is what's displayed
  when 1) animation is not supported or 2) animation is disabled.

Not sure if this makes sense in other formats, but well.

[1] https://wiki.mozilla.org/APNG_Specification
Comment 2 contributor 2013-04-22 23:51:54 UTC 
Checked in as WHATWG revision r7847.
Check-in comment: Clarify what we mean by 'poster frame' of an animation.
http://html5.org/tools/web-apps-tracker?from=7846&to=7847