Originally Posted by braxus
I have an older Panasonic DVD recorder model DMR-E55. Anyway it allows slower speed LP and EP which gives 4 and 6/8 hours respectively. I know the slower speeds use more compression to get longer time, but do either LP or EP cut resolution down to 320x280 comparable to VCD discs? Is there a mode that you can get really good 320x280 rez with less compression? Reason I ask is I'd like to archive VHS tapes and it seems a waste to use the full rez of a DVD disc in SP speed, plus you can get more time on the disc since I have recorded some of those VHS tapes in EP speed. VHS is coming off a JVC S-VHS vcr which has Digipure TBC and DNR to clean up the picture.
What is the actual rez of LP and EP speeds? I will be using the 6 hour option on my Panasonic instead of the 8 hour option for EP.
Last question- do all DVD players play LP and EP speed DVD-R discs? I ask because I'd like to know if someone can watch such a disc on any DVD player.
The DMR-E55 is a 2004 model that offers these recording modes as found on page 39 of the DMR-E55 Operating Instructions:
Max. 8 hours (using 4.7 GB disc)
XP: 60 minutes
SP: 120 minutes
LP: 240 minutes
EP: 360 minutes or 480 minutes
It seems to me that Panasonic didn't address recording resolution with 2004 models but others have reported that D1 resolution is found only with the XP and SP recording modes with 2004 and earlier models. The CNET review (quoted and linked by Wajo) misstates the Panasonic recording modes/recording durations.
With Panasonic's 2005 and later model recorders D1 resolution is maintained across the XP (one hour), SP (two hour) and LP (four hour) recording modes. Here is typical information, as found on page 75 of the (2005) DMR-ES30V Operating Instructions:
Horizontal resolution: More than
XP: 500 lines SP: 500 lines
LP: 500 lines EP: 250 lines
Signal to Noise Ratio: More than 45 dB
Frequency Response: XP, SP: 0 dB ±3 dB at 4 MHz (0 dB at 0.1 MHz),
LP, EP: 0 dB ±3 dB at 2 MHz (0 dB at 0.1 MHz),
Dynamic Range: Rec/PB: more than 90 dB
DVD-Video PB (with LPCM): more than 96 dB
CD PB: more than 96 dB
Frequency Response: XP, SP, LP, EP (6H mode): 20 Hz to 20 kHz (0 dB ±3 dB)
EP (8H mode): 20 Hz to 12 kHz (0 dB ±3 dB)
Cross Talk: More than 60 dB at 1 kHz
Panasonic resolution and bitrates have been addressed in some detail by Jeff, ClearToLand and others. These discussions are found in several threads. Here is one of those threads:http://www.avsforum.com/avs-vb/showthread.php?t=1259214