How change BDA Driver from ATSC to DVBT within "DDK BDA Driver sample(tuner & capture filter sample) " ?

I use "DDK BDA Driver sample (ATSC network provider + tuner filter + capture filter + MPEG-2 Demultiplexer + ...)" , It may play the TS stream (audio/video program) rightly and smoothly in GraphEdit software. I found the ATSC Driver sample may very good work.

Then I change the network provider from ATSC to DVBT (DVBT network provider + tuner filter + capture filter + MPEG-2 Demultiplexer + ...) , It can not play the TS stream (black screen in play window), why?

Can someone tell me how to modify the DDK BDA Driver sample for DVBT ?

Many tanks.