Having trouble capturing digital TV using DirectShow

Question

I have a YUAN MC570QA ATSC/Analog Hybrid Tuner device, I can open the device for capturing analog but I can't find any reference or source code showing how to open the digital tuner. If I enum devices using CLSID_VideoInputDeviceCategory I only see DibCom BDA Digital Tuner (Dev1 Path2), however the software that comes with the device lists:

DibCom BDA Analog Tuner (Dev1 Path2) DibCom BDA Digital Tuner (Dev1 Path0) DibCom BDA Digital Tuner (Dev1 Path1)

I'd appreciate any pointers in getting DirectShow to capture a channel on the digital tuner.

I would list my c++ code but I'm not sure if I'm supposed to open the digital tuner as a device or if I'm supposed to somehow access the tuner through another interface - not sure which code portion to list here.

Answer 1

For DVB you have to use BDA in Directshow. This is not as straightforward as analog capture. For example you have to Submit a tune request before connecting the whole graph. There should be a DTVViewer example somewhere in the sdk. I really think you need to look at the example. Maybe this code I have posted before might also help.

I found this example how a BDA graph should look like (source).