Originally Posted by eddiew
I got two cables from Amazon so that I could try both. Mediabridge High Speed HDMI Cable with Ethernet (25 ft) - Ultra Series and AmazonBasics High Speed HDMI Cable (25 ft).
Both work great. I did manage to go from a 30 foot length to 25. I have never had a problem with Monoprice either. With the new cable it made 3D from DirecTV watchable. I just thought that DTV had bad quality on their 3D channels. With the Redmere the PQ was very grainy and/or bit starved looking. That being said 3D from my PS3 was perfect with movies like Prometheus. So, I find it very odd that once the projector locked on, some sources looked OK while others did not.
Congratulations! You are now the poster child for attributing a result from something completely unrelated.
DirecTV uses Side By Side and Top and Bottom 3D. In other words DirecTV divides their 3D picture in half. If Side by Side is used, then the left half of the picture is a "complete" image for the left eye and the right half of the picture is sent to the right eye. That, of course, looks grainy because, at best, this is a 960 x 1080 picture for each eye. If you are watching a 720p 3D show, then it is a 640 x 720 picture per eye. That will look grainy but the amount of grain will change depending upon which of the 3D channels you are watching and what format they are using - 1080i SbS or 720p TaB or whichever combination is used. The quality of the program source material is also variable. So, unless you compared the exact same picture at the same moment, there is no way you could accurately tell a difference.
Your BD player uses frame packed 3D at 24Hz. Each eye gets a full 1920x1080 picture 24 times a second. Much sharper and a much better 3D picture than DirecTV can ever show (or has the bandwidth to show).
In terms of bitrate - both DirecTV and BD are using some form of H.264 compression for 3D. The difference is in the bitrates. DirecTV bitrates are much lower than what is capable with BD. You should also be aware that DirecTV's bitrates can be variable between channels. Some channel have minimum bitrates specified in their contracts to prevent bitstarving. You can assume the 3D channels do not.
For details of audio the maximum time the human brain can remember specific sharp details is about 10 minutes. I have no idea how much time video is retained for but unless you had two exactly tuned TVs side by side with the only difference being the cable, I'd say you really can't tell accurately whether or not there is a difference with the same exact picture.
Of course, if you did have two TVs side-by-side then I'd be very interested in your results and would like to hear more. However, if you really were comparing a DirecTV 3D picture versus a 3D BD picture then you successfully showed that the half-resolution DirecTV 3D picture was more blurry than the full resolution 3D BD picture.