Originally Posted by opieandy
Is there a huge quality difference between SP (2 hour) and LP (3 hour) and EP (4 hour) recording levels?
I have tried taping games in different modes, and when I compare them, I don't see much if any difference. Maybe a slight difference, but it's hard to tell for sure if there is a difference or if my expectations of a difference are influencing me.
I use the rule that if I can't see much difference -
then (obviously) there isn't much difference to me
OK I recently got a cheapo SV2000/WV10D6 DVD recorder from WalMart for all of $49.97 -
please click on SV2000 WV10D6 DVD Recorder from WalMart
where there is a lot of details of my impressions -
especially on the different recording modes/speeds.
I used GSpot
to examine the recordings from the SV2000/WV10D6 -
HQ (1hour) and SP (2hour) - full DVD resolution of 720x480
all other speeds/modes -
SPP(2.5hr), LP(3hr), EP(4hr) and SLP(6hr) - drops to CVD (China Video Disc
at Wikipedia) at 352x480 resolution.
Like you, I could not see much difference between the recordings -
except for SLP(6hr) which can show motion and edge artifacts -
but still more than acceptable for program shifting.
I didn't even know what CVD was, and had to look it up.
With hindsight this drop in resolution (to CVD at 352x480) makes sense -
otherwise how else could so much video information be recorded on a single DVD?
The main differences between the recordings - other than DVD-CVD - was the bit rate, and therefore Qf (Quality Factor at Wikipedia
SP(2hr) = 4339 kbps, Qf = 0.419 (bits/pixel)/frame
EP(4hr) = 2032 kbps, Qf = 0.401 (bits/pixel)/frame
So the Qf for SP and EP are similar - the only real difference is the respective resolution (DVD 720x480 for SP, and CVD 352x480 for EP).
For me, I record at SP(2hr) only if the program is special, otherwise I am quite happy with EP(4hr) - this is even when I know the resolution is half that of SP - it's just that I cannot see much difference - at least on my 27" analog CRT TV.
It may be a limitation of my equipment, or eyes -
but it doesn't matter -
I can't see a difference.
The occassional SP recordings are worth it to me, because some day I may get a HDTV - and then I might be able to see a difference........