Date: Thu, 28 Dec 2006 05:32:49 +0000
From: "Matthew Hanson" <[EMAIL PROTECTED]>
Subject: RE: [LIB] Margi DVD-to-Go card works!
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I'm wondering if you guys have done video quality test comparisons between
MPEG-1 and MPEG-2 encoded videos as they play on the Libby. I'm assuming
the MPEG-2 files >have< to be sharper. I've been working more with AutoGK
recently, and have been playing various XVid encoded captures through a PC
DV port to an HDTV. It's interesting to see how small AutoGK can make a
file and still retain quite the same quality as it does at settings that
result in much larger files.
I've been using the Bincsoft Bitrate Calculator to calculate bitrates for
MPEG-1 encoded files in TMPGEnc so they'll all fit on a 4.5GB DVD-R. When
the resulting videos get displayed on the Libby's little screen, I sure
can't see any difference between 850kbps - 1100kbps encoded files.
But the quality of MPEG-2 video playback on a Lib is something that hasn't
even been discussed to my knowledge (just checked archives to confirm that
unless Ive messed something). I think you guys are the first to really get
the Margis up and running, and able to do tests on.
So while it'll be fun to see if I can duplicate your successes from the work
you've put into this, I wonder how practical it'll actually be to play
MPEG-2 encoded files on these old under-powered systems with such a limited
portable battery source.
The battery in my 100 went south a couple of months back. And now I see the
one in my 110 is only powering the system for 35-45 minutes with power
saving options maxed The Margi has to suck a lot of power. So Im
wondering if you guys are going to be able to play an entire 90-120 minute
DVD (from file or DVD disk) before using up the charge in the Libbys
battery. Even with a rebuilt battery pack as David is looking into, I
wonder how long these systems will me able to process all that data through
the Margi.
Matt
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