madmax66
19th November 2004, 03:09
I'm just starting off doing capture work and I am currently planning to archive my laserdisc collection. This will probably start in a month or so when I have more time and when I can get my equipment from my player from my parents home. In the meantime, I'm trying to do some research on this. Doing a search of AC3 and laserdisc, I've come up with 20 listings on the subject and started piecing things together.
The player in question is the Pioneer DVL-909 and the soundcard I'm
using is the Sound Blaster Audigy 2 ZS Platinum Pro. According to
Pioneer this unit does not need a RF-demodulator to connect to the
soundcard. One less headache. According to both parties just connect
them with the optical cable without any extra hardware
In response to my inquiry at Creative Labs I was told the following:
The Audigy 2 ZS Plat. Pro can capture an AC3 bitstream at either
48Khz or 96Khz. However if there is any copy protection included on
this stream it could be problematic. You will be able to record it as a 2.1 PCM audio stream via this input.
and
With bit accurate mode enabled it will not change the AC3 stream and it should arrive to your programs in the same form it came in. However you will want to make sure that your Laserdisc is sending at 48KHZ (which it should be) as that is what the card will look for in this mode (If it is at another frequency there may be timing issues).
and
There will be no alteration to the bitstream from the Audigy Card if you have bit accurate mode enabled. If you have the onboard decoder disabled then what you record in your Wav program will be the "white noise" of the digital SPDIF input. This file will be a wav and will require conversion to be able to work with a decoder. I do not have any information on this step
In thread:
http://forum.doom9.org/showthread.phps=&threadid=27960&highlight=ac3+laserdisc
It was suggested to capturing it in 48000khz RAW PCM and just saving it as a ac3
In thread:
http://forum.doom9.org/showthread.phps=&threadid=58611&highlight=ac3+laserdisc
It was suggested to save it as a PCM RAW file, 16-bit Motorola PCM
Now riddle me this, are the above audio streams the same? If not which one should I save it as. Better yet, what’s the difference between the 3?
At this stage to me it looks like I should just connect the 2 pieces of hardware via the SPDIF and capture the audio with the one of the above mentioned parameters.
It seemed too simple so obviously I was missing something so I did
some more digging:
http://forum.doom9.org/showthread.php?s=&postid=338286
This seemed to be the more helpful thread of the batch I went through
Here's where I need help and a second opinion because it looks like
the following to me:
1) Set the SB card to Bit accurate recording
2) Capture the audio stream via in one of the 3 formats using this input, question is, which one?
Is this a fair assumption?
Now here's what I want to know
1) From what I gathered the audio captured will wind up sounding like
white noise and will need to be proccessed using Besweet.. I’ve been to links:
http://www.doom9.org/audio-guides.htm
http://forum.doom9.org/showthread.php?s=&threadid=68300#post424067
And for the life of me I’m trying to figure out which guide will help me. Since they are front ends for Besweet, is there anything that will explain either the front end options or command switches better? For someone just starting out, it’s a bit overwhelming at my current skill level. I think the question I should be asking at this point (until I’m better versed) is what would be good generic parameters to convert it over to 5.1 using the front end or the command version
2) Since it is laserdisc what would be better, first join the 2 (or more) LD captures and deal with one huge file. Then separate and process the video and audio files individually then combine them later
or
Process the audio and video of each individual LD side (Each side being 1 file) then join the sides (files) into the final file?
I'm sorry for being long winded but I want to give as much info as possible. Any help is appreciated.
Thank you
MM
The player in question is the Pioneer DVL-909 and the soundcard I'm
using is the Sound Blaster Audigy 2 ZS Platinum Pro. According to
Pioneer this unit does not need a RF-demodulator to connect to the
soundcard. One less headache. According to both parties just connect
them with the optical cable without any extra hardware
In response to my inquiry at Creative Labs I was told the following:
The Audigy 2 ZS Plat. Pro can capture an AC3 bitstream at either
48Khz or 96Khz. However if there is any copy protection included on
this stream it could be problematic. You will be able to record it as a 2.1 PCM audio stream via this input.
and
With bit accurate mode enabled it will not change the AC3 stream and it should arrive to your programs in the same form it came in. However you will want to make sure that your Laserdisc is sending at 48KHZ (which it should be) as that is what the card will look for in this mode (If it is at another frequency there may be timing issues).
and
There will be no alteration to the bitstream from the Audigy Card if you have bit accurate mode enabled. If you have the onboard decoder disabled then what you record in your Wav program will be the "white noise" of the digital SPDIF input. This file will be a wav and will require conversion to be able to work with a decoder. I do not have any information on this step
In thread:
http://forum.doom9.org/showthread.phps=&threadid=27960&highlight=ac3+laserdisc
It was suggested to capturing it in 48000khz RAW PCM and just saving it as a ac3
In thread:
http://forum.doom9.org/showthread.phps=&threadid=58611&highlight=ac3+laserdisc
It was suggested to save it as a PCM RAW file, 16-bit Motorola PCM
Now riddle me this, are the above audio streams the same? If not which one should I save it as. Better yet, what’s the difference between the 3?
At this stage to me it looks like I should just connect the 2 pieces of hardware via the SPDIF and capture the audio with the one of the above mentioned parameters.
It seemed too simple so obviously I was missing something so I did
some more digging:
http://forum.doom9.org/showthread.php?s=&postid=338286
This seemed to be the more helpful thread of the batch I went through
Here's where I need help and a second opinion because it looks like
the following to me:
1) Set the SB card to Bit accurate recording
2) Capture the audio stream via in one of the 3 formats using this input, question is, which one?
Is this a fair assumption?
Now here's what I want to know
1) From what I gathered the audio captured will wind up sounding like
white noise and will need to be proccessed using Besweet.. I’ve been to links:
http://www.doom9.org/audio-guides.htm
http://forum.doom9.org/showthread.php?s=&threadid=68300#post424067
And for the life of me I’m trying to figure out which guide will help me. Since they are front ends for Besweet, is there anything that will explain either the front end options or command switches better? For someone just starting out, it’s a bit overwhelming at my current skill level. I think the question I should be asking at this point (until I’m better versed) is what would be good generic parameters to convert it over to 5.1 using the front end or the command version
2) Since it is laserdisc what would be better, first join the 2 (or more) LD captures and deal with one huge file. Then separate and process the video and audio files individually then combine them later
or
Process the audio and video of each individual LD side (Each side being 1 file) then join the sides (files) into the final file?
I'm sorry for being long winded but I want to give as much info as possible. Any help is appreciated.
Thank you
MM