Thanks for the thanks.
I was surprised, no.....SHOCKED! that it didn't include ANY references to picture quality (PQ)
As Kelson stated, all DVR's (that I know of) record exactly as delivered. They don't reduce quality.
Have said that, this doesn't mean that the downstream
processing of the actual output signal will be as good. One example of that is the VRX from ePVision. While it isn't across the board, lower bitrate
transmissions will cause false contouring on those recordings, where the same recording played back on a PC will not show this.
Of course, I’m actually at a loss to say what PQ data I want because as a digital technology newbie, I’m still confused as to exactly what ARE the main factors that determine digital PQ, mainly from a recording/dubbing standpoint.
In one word: compression. Or lack of. There is no free lunch. Digital material, namely video takes up a HUGE
amount of space, hence the needed to compress. It doesn't stop there, satellite and CATV companies usually go further and compress more to fit 10 lbs of **** into a 1 lb bag.
do they also record in standard definition (SD), if fed an SD signal ?
Again, they record what is transmitted as it is transmitted. No better, no worse.
I would consider an SD DVR, especially if it could actually do the job better than an HD DVR, given the SD video I’ll be recording.
You might want to take a look at the Magnavox/Funai DVD/DVR in the DVR recorders sub forum. Being only a DVD
recorder, it is only SD which is why it wasn't included here.