gimme dvb wrote:
I've used the latest Cyberlink and CoreAVC codecs. Same problem when I turn to mpeg-4 channels. I have my machine specs under this message, are you gonna tell me it's not good enough? Used to work fine, and people on other message boards are saying Genpix isn't handling the new way Dish sends out mpeg-4 well. And yes it can be the Genpix card. I've already tried all options except upgrading my computer. I was thinking of upgrading it anyway, but it might not even help if the problem's not my comp's power.
Other peoples comments about genpix simply reflects their own misunderstanding of how things work. Yes, your machine isn't good enough and your codecs aren't good enough. Genpix has nothing to do with decoding the datastream. Its the PC that does the decoding. That's why your pc needs plugins.
All the codecs around are early version of H.264 codec's as HDDVD or Blue Ray has not really arrived on the PC yet.
Maybe things would be easier to follow if you ran TSReader. SD transponders run 8, 10, 12 channels. You can watch the 40MB or so datastream arrive in the PC and get decoded into all those channels. You can record the entire MUX to a file and parse out the channels and all later. All this is occuring in the PC. All genpix is doing is delivering the MUX.
If someone is using a novel or non standard H.264 codec, your PC is what is parsing that from MUX and delivering it to the codec and attempting to put it on the screen.
I find that some H.264 signal sources work fine with ATI's AVIVO codec, others work better with CoreAvc's. Some channels will crash DVBDream with AVIVO, but not CoreAvc. Some codec's crash DVBDream when you tune to sd CNN, others do not. Its ALL in the PC.
The total bandwidth of one transponder is no different on the HD channels than it is on the SD ones. They can simply fit more channels into the bandwidth available.
What Genpix does that no one else does is demodulate turbo8psk modulation. This is in the radio and not in the PC. The modulation technique requires the radio to be able to demodulate it. For instance, its like try to listen FM on an AM radio, or, more extreme, watch a video signal on a radio instead of a TV.