How do I convert Laserdisc to DVD?

[jj...@usa.com]

I am interested in coverting a LaserDisc to DVD format (Vob). I know
how to do it via the analog outputs on the back of the laserdics
player into the computer but what I want is to do it purely digital.

How can I get the MPEG1 file straight from a laserdisc player????

Thanks.

[jj...@usa.com]

[Nigel Feltham]

Laserdisc has no filing system and the picture content is purely analog with
PCM digital sound so while the sound can be copied digitally using the
optical digital output the picture content can only be copied as an analog
signal. This is stored on the disc by FM modulating the vision and sound
signals and clipping the waveform to produce the digital-like waveform
stored on the disc. On playback the off-disc signal is just demodulated with
an FM demodulator which directly outputs the vision signal and the sound
signal is sent through a CD player type decoder. So the analog outputs
contain the best signal available and your computer Video capture card is
the only way to get a digital signal from it.

I hope this helps,

Nigel

jj...@usa.com wrote in message <37a8083a...@enews.newsguy.com>...

[chris...@okay.net]

On Fri, 30 Jul 1999 16:05:02 GMT, jj...@usa.com (jj...@usa.com) wrote:

>I am interested in coverting a LaserDisc to DVD format (Vob). I know
>how to do it via the analog outputs on the back of the laserdics
>player into the computer but what I want is to do it purely digital.

LD is analogue.....

[Someguy]

This doesn't make sense. Even if you can make a digital transfer, you can't
make the image quality any better than it already is. Also, what you're
looking for is some sort of raw dump to a PC. Is there any software
availible which can read whatever LD format is in and convert it into an
uncompressed AVI? Better question is, do you have enough hard disk space to
decompress something of this nature? I'm sure a chapter would run you at
least 50 gigs uncompressed.

chris...@okay.net wrote in message <37b4d657...@news.okay.net>...

[jj...@usa.com]

I do not want to make them quality better, I just want to put my
laserdiscs (MPEG1) onto a DVD (MPEG2). I know I will still get MPEG1
quality, but I want them on DVD.

On Thu, 12 Aug 1999 06:52:13 GMT, "Someguy" <some...@here.com>
wrote:

[jj...@usa.com]

LD is NOT analog. It is MPEG1 and is purely digital -- the sound and
the picture.

[jj...@usa.com]

If you don't have a clue as to what you are talking about please do
not fill the newsgroup with crap. A laserdiscs user a LASER to read
the disc -- how anyone would think this is analog is beyond me.

[jj...@usa.com]

Anyone know how to capture the stream?? I have found the pin with the
MPEG1 stream in my LaserDiscs player (I think) but I can not figure
how to capture the stream onto my computer.

Any suggestion? I am trying to use the serial ports but I am not a
programmer and am not having any luck.

[Kevin]

Hi
Nigel is correct. The video signal is FM modulated and is still the same as
it was when Laserdisc was first launched except that the original sound was
on two FM carriers along with the video which has the Luma and Chroma also
on separate carriers. The only change over the years is that the sound is
now digital, in fact the same as audio CD. The video portion of the signal
is infact the same as VHS except that the bandwidth is much greater.
Philips document all this in most of their Laserdisc service manuals. The
laser in any system only responds to the pits and troughs on the disc and
then the electronics take it from there.

Kevin

[René]

Very intressting model laserdisc you have, since laserdisc uses
timecompressed data in a composite stream instead of lousy mpeg1 stream

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