On 15 Apr 2015 18:43, "Dominique Hazael-Massieux" <dom@w3.org> wrote: > > On 13/04/2015 22:44, Silvia Pfeiffer wrote: >> >> > Video filters are being written using the canvas api these days. You >> capture frames into the canvas and then can do whatever you like with >> the pixels. This can also be done with live video. Is that not >> sufficient? What is the use case? > > > As far as I know, using canvas for video manipulation is OK when the said manipulation is achievable on the CPU, but a lot of manipulation can only be reasonably achieved with the help of the GPU. > > As graphic cards bring a lot of hardware-baked video manipulation features, a Web API that would enable to use these on video streams would be useful. > > WebCL is a contender in this space, but I don't think it has gained much traction so far: https://www.khronos.org/webcl/ > You might want to search for canvas and GPU - you might find that most browsers actually do canvas operations on the GPU. Cheers, Silvia.
Received on Wednesday, 15 April 2015 11:37:45 UTC