I was wondering if anyone could please point me at a list or similar resource for USB capture devices which support raw (or sliced) VBI access for producing a closed caption transcript through software such as zbvi-ntsc-cc or ccextractor? Specifically I'm wanting a device capable of S-Video, Composite, or even Component input, not just ATSC, as most USB devices seem focused around these days. I've managed to get this working with various ivtv and saa713x based PCI devices, but aren't aware of any USB implementations of chipsets which use those drivers. Searching online, I found this archived message: http://lists.zerezo.com/video4linux/msg16402.html which states: > some em2840 and newer devices are able to capture raw vbi in > linux (sliced vbi isn't possible yet) > em2820, em2800, em2750 do not support vbi at all. Checking the em28xx driver homepage for recent models, I found this entry: http://mcentral.de/wiki/index.php5/Em2880 > officially the em2880 is em2840 + DVB_T which implies that not only is the "em2880" series a "newer" device, but it should in fact already contain the "em2840" chip specifically mentioned. Later on that same page, in the list of devices: ATI/AMD TV Wonder 600 and on the manufacturer's page: http://ati.amd.com/products/tvwonder600/usb/index.html Under the list of "Input Connectors": > S-video input with adapter Picking up one of these devices, I attempted to tune into the S-Video feed and check the /dev/vbi0 device, but received the same error message as I do with all other em28xx devices encountered thus far: > Cannot capture vbi data with v4l interface: > /dev/vbi0 (AMD ATI TV Wonder HD 600) is not a raw vbi device. Can anyone please point me in the right direction? I would much prefer to be certain the next purchase is supported. Thanks! Steve -- Steve Castellotti sc@xxxxxxxxxxxxx Technical Director Eyemagnet Limited http://www.eyemagnet.com -- 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
