video noise were causes in different ways.
One can be from how it was first recorded in the camcorder.
The other is the playback source, the compression part, and display...all which can affect video noise.
playback source, say a dvd player with bad signal to noise ratio for y, pb, or pr for component or Y/C for s-video could cause video graininess and losses color dynamic...
MPEG-2 compression also causes video noise, but good compression and higher bandwidth makes it really hard to tell and i am not talking about mpeg-2 compression at the moment...
the display (tv) stuff like sharpness where if you increase the sharpness too much, you will notice the video noises. SVM or VM, VSM (same thing with different marketing names) gave fake edge enhancements and causes video noises too.l
But honestly, thx, i have no clue what method you use to make those look sharper and it doesn\'t seem to be edge enhancement that i described above which is a good thing...