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OK, the PC capture of whatever feed is
lossless...
Like taking a file and using zip to compress
it.
The file when uncompressed is exactly the same as the source.
Lossless
As opposed to using jpeg/mpeg/mjpeg which uses
tricks to compress images down. When the image is uncompressed it is not
identical to the source. Not lossless.
Look at matroxusers web site vcdhelper, any
big
video editors website for details as to why this is a good
idea...
I don't only capture from tv, I capture from
dv and
my s-vhs deck.
Jason
----- Original Message -----
Sent: Tuesday, May 28, 2002 11:19
AM
Subject: [ukha_d] Lossless
Compression
Jason,
This is really a question for
you...
How are you achieving lossless compression with SS?
I
was
thinking about this last night and the only way I can see of doing
this
is
to take a feed into a SAT card in the PC direct from the LNB to
catch
the
digital stream before it is decoded thus achieving a lossless
compressed
file. The problem with that is that there is no CAM available
for Sky
Digital to enable this to be done with a SAT card or TV.
AFAIK the
only
way to do this, or more accurately, the only system that
can do this, is
Sky+ as it actually records the stream directly and
plays back as it
would
be presented straight off the air.
If you are running it through the
STB and then transferring that signal
to your SS machine then that is
not
lossless, you are in fact, doing
what any PVR or VHS machine would
do.
K.
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