On Fri, 2012-06-29 at 15:55 -0400, Devin Heitmueller wrote: > On Fri, Jun 29, 2012 at 3:10 PM, <aschuler@xxxxxxxxxx> wrote: > > I've found that most, if not all, cable boxes do not pass > > through CC data, because they are meant to interpret it and > > pass it on with customized formatting and whatnot, so another > > scaling challenge will be finding a feed that I can use > > without a cable box. OTA broadcasts have been my testing > > ground because they are so readily available. > > Yeah, the fact that many cable boxes don't provide a way to expose CC > data other than their inserting the decoded text into the video is > pretty frustrating. Bear in mind though that since you don't care > about the video then as long as the cable box has standard definition > outputs then it may very well include the CC data (HD component and > HDMI don't have a way to send CC data, but the older standard def > outputs still do). And for the SD analog outputs (CVBS or S-Video) of such boxes you would need an analog capture device in you Linux system. There are at least a few devices supported under linux that provide VBI data (e.g. CC) output independent of the digitized video. FWIW, I have noticed that ATSC OTA to analog NTSC converter boxes output a very nicely formed CC signal in the VBI. I have no experience with cable boxes. Regards, Andy -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
