I've been meaning to do this for a while now and finally got some time this pm. Since I have Tivo S3 I can record both from Cox HD locals and from OTA broadcast of the same. So to test if Cox does much bit-rate shaping/degradation of the HD locals I recorded 30 min segments at the same time, 1 tuner recording Cox, other tuner recording OTA and then recorded the total file size of each (Tivo reports file sizes of each recording). Here are some results: Code: Cox, Orange County (Mission Viejo) headend STATION OTA (GB) CABLE (GB) %DIFF CBS (1080i) 4.00 3.87 -3.2 NBC (1080i) 3.96 3.84 -3.0 ABC (720p) 3.47 3.52 1.4 FOX (720p) 3.36 3.51 4.5 So the Cox versions of 1080i channels are a little smaller, but surprisingly the Cox versions of the 720p are a little larger?? In any case based on this admittedly very small sample looks like Cox OC is not degrading the HD locals by much if at all. NOTE: There is some margin of error involved since the OTA version and Cox version are not exactly in sync (off by a few seconds), but that probably is negligible difference especially since these were 30 min samples. NOTE: Other factor is the 1080i OTA versions have complete PSIP information while the cable versions do not. The 720p cable channels do have full PSIP. Not sure how large PSIP information is compared to total file size but thought I should point that out.