- From: <bugzilla@jessica.w3.org>
- Date: Thu, 30 Sep 2010 16:25:35 +0000
- To: public-html-bugzilla@w3.org
http://www.w3.org/Bugs/Public/show_bug.cgi?id=10642 --- Comment #19 from steve faulkner <faulkner.steve@gmail.com> 2010-09-30 16:25:35 UTC --- (In reply to comment #18) > (In reply to comment #15) > > (In reply to comment #4) > > > Title: 2010 Marathon Coverage > > > Poster alt: Sally Smith crossing the finish line with her hands upraised. > > > > I think this is a clear example of how poster alt would be useful. Note I am > > not sure what point comment 13 is making; there will always be examples of bad > > alt text out there. > My point is that poster frame may not be representative of the video. That's > not merely problem of bad alt, but bad poster frames to begin with. > Poster frame is not original content, it is just placeholder for unloaded > video. Because in practice poster frames are often automatically selected (e.g. > first or middle frame of the video) they are often poor representation of video > as a whole. > A poster frame for video of "Sally Smith crossing the finish line" might as > well happen to be "A reporter standing with microphone in front of a crowd". > A use case of "user with no or poor vision wanting to know what video is about > and what mood it has" might not be served by poster description as well as by > description of the video as a whole. (In reply to comment #18) > (In reply to comment #15) > > (In reply to comment #4) > > > Title: 2010 Marathon Coverage > > > Poster alt: Sally Smith crossing the finish line with her hands upraised. > > > > I think this is a clear example of how poster alt would be useful. Note I am > > not sure what point comment 13 is making; there will always be examples of bad > > alt text out there. > My point is that poster frame may not be representative of the video. That's > not merely problem of bad alt, but bad poster frames to begin with. > Poster frame is not original content, it is just placeholder for unloaded > video. Because in practice poster frames are often automatically selected (e.g. > first or middle frame of the video) they are often poor representation of video > as a whole. > A poster frame for video of "Sally Smith crossing the finish line" might as > well happen to be "A reporter standing with microphone in front of a crowd". > A use case of "user with no or poor vision wanting to know what video is about > and what mood it has" might not be served by poster description as well as by > description of the video as a whole. There is the more generic use case described below: vision impairment is not binary, people are not either totally without sight or have 20/20 vision, there are may gardiations. a good proportion of people who are categorised as 'legally blind' have some vision, but rely on a screen reader for the majority of their interaction with web content, when they see a fuzzy blobs on an image whether it be a video poster frame or on a canvas or an image, the provision of a text alternative may well be useful in helping them make sense of what those blobs are. If the poster frame is not purely decorative it should have a text alternative, so whether its a frame from the movie, the movie poster, or an ad for budweiser this information should be provided. -- Configure bugmail: http://www.w3.org/Bugs/Public/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the QA contact for the bug.
Received on Thursday, 30 September 2010 16:25:38 UTC