[Commentor] LC-2641 Chaals McCathieNevile (archived comment) [Comment] 2. Many devices have more than one camera. Although it makes no sense to insist on a given one (some systems, like super-fancy video conferencing systems that used to be science fiction and are now feasible to construct from spare parts, have a lot of cameras), The fact that in a huge number of cases you can divide them into "facing the user" and "the rest", suggests that it would be nice to at least allow the simple hint as an author request. [Commentor reply] yes [Working Group decision] 
We changed the meaning of the capture attribute - it is now a boolean ( thus there are no keywords defined with it). The accept attribute defines the requested MIME type and if present the capture attribute indicates to use the device built-in capture mechanism to obtain content of that MIME type. Thus that mechanism could have a user interaction to determine which device, but that would be implementation dependent. I could also envision different MIME types for different camera choices (though maybe that would probably require standardization elsewhere). Given the wide range of possible accept content types, it probably does not make sense for the HTML Media Capture specification to define capture choices at the device (and the current specification does not provide a means to do so). The latest set of changes make this issue is moot since Keywords previously implied finer granularity but are no longer specified. http://lists.w3.org/Archives/Public/public-device-apis/2012Dec/0022.html