Re: Is this possible ?
Mike Kobb <[email protected]>
| Newsgroups | gmane.comp.hardware.roku.technical |
|---|---|
| Message-ID | <BCF633C3.1838A%[email protected]> |
You can absolutely do overlay of graphics onto a video stream. Notice that in the Photo app, when playing LiveArt, transport icons appear and so on. In fact, you can't even really display video without painting 100% alpha into the graphics layer. If you want an overlay, just paint some non-alpha graphics. > --- Dave Dodge <[email protected]> wrote: >> On Tue, Jun 15, 2004 at 07:28:15AM -0700, David Ondzes wrote: >>> Is it possible to send video into the roku (say via component) and >> then >>> overlay a portion of the screen ? >> >> If you mean you want to overlay something onto the analog video >> input, >> then I don't believe there's any way to do that. From previous >> discussions it appears that the video passthrough is just a simple >> analog wiring switch: when the passthrough is enabled the video >> bypasses the CPU and most other processing hardware. There's a >> simple >> detection circuit that tests for motion in the analog input, but I >> don't think there's any way to actually capture the analog video for >> processing, scaling, overlay, etc. > > I had a feeling that was the case but I couldn't connect to the > archives to confirm. > >> Now, if you want to overlay something onto a _digital_ video stream, >> such as an MPEG transport stream being fed from a file server, then >> that should be possible from a technical standpoint. I don't know if >> the Cascade API currently enables this, though. > > There an idea. I wonder if vlc can read TS file as it is being written > so I could do this with live tv. I guess it times to start looking at > the Cascade APIs, I was holding out for jvm :) If anyone know what APIs > to please let me know. > > > _______________________________________________ > Roku-tech mailing list > [email protected] > http://lists.rokulabs.com/mailman/listinfo/roku-tech ------ Mike Kobb Senior Software Engineer, Roku Get more out of your high-def TV. High-definition photos, art, music and more. http://www.rokulabs.com tel: 650.321.1394 x12 fax: 650.321.9648