Darth Editous captured the 5.1 some time ago, but I don't have it all anymore. I personally have been working on my own conversion of these in my spare time, but they're nowhere near done nor do they have 5.1. Dark_Jedi's 97SE V2 uses the 5.1 and is synced to the broadcast versions. (which are superior to the LDs) That should be released sometime soon. Otherwise Lee Thorogood's 97SE set looks great but that's in PAL.

Not sure about bitperfect-they should be-DE's 5.1 files were AC3 but they were the full 384 kbp/s.

Great as they might sound (haven't heard 'em myself), I'm afraid "synced to the broadcast versions" and "bitperfect" are gonna be mutually exclusive.

Once upon a time adywan threatened to upload his rips. Post 18
If it happened I missed it.


Also from the same thread:

adywan said:

My ESB AVCHD has the full unedited 5.1 laserdisc audio

I've been able to edit video without re-encoding AC3 audio...

Molly said:

I've been able to edit video without re-encoding AC3 audio...

 Yes, but I'm not looking for the re-encoded ac3 (since it will have to be re-encoded to make it suitable for dvd/blu-ray). I'm looking for the raw capture.

Arnie.d said:

Molly said:

I've been able to edit video without re-encoding AC3 audio...

 Yes, but I'm not looking for the re-encoded ac3 (since it will have to be re-encoded to make it suitable for dvd/blu-ray). I'm looking for the raw capture.

I have the SE 1997 Japan Laserdisc set and I used the red/white RCA in to record the audio when I captured the movies but I'm guessing that can't help you, can it?  What I've got is more like Dolby Stereo right?

Any copy that's been synched to video will have undergone lossy encoding again

Unless the video was altered to match the audio.

Jetrell Fo said:

I have the SE 1997 Japan Laserdisc set and I used the red/white RCA in to record the audio when I captured the movies but I'm guessing that can't help you, can it?  What I've got is more like Dolby Stereo right?

If the track was set to digital, then you have a slightly down converted signal of the Dolby Surround encoded PCM.

captainsolo said:

Jetrell Fo said:

I have the SE 1997 Japan Laserdisc set and I used the red/white RCA in to record the audio when I captured the movies but I'm guessing that can't help you, can it?  What I've got is more like Dolby Stereo right?

If the track was set to digital, then you have a slightly down converted signal of the Dolby Surround encoded PCM.

Yeah, it was set to digital, so probably not bit perfect I'd guess.  Still sounds nice...now if I can get the editing thing down I can have a set for my home viewing pleasure.  

Hey Arnie, I have everything you would need to do a bit perfect capture (SE LD Set, pioneer cld-d704 player, sony ta-e9000es preamp with rf input and optical output, & E-MU 1616m), but I'm not sure you could join the different LD sides together into one file.  I'm also not exactly sure how to capture the ac3, either.  

My guess is that it would involve recording to a 48khz wav and renaming the file to ac3.  Let me know if you have any pointers on how to start.

Darth Editous said:

 

My guess is that it would involve recording to a 48khz wav and renaming the file to ac3. Let me know if you have any pointers on how to start.

I can give you some, starting with "it's not quite that simple" ;)

The first time I captured raw AC3, that is how I did it - you can then save the recorded wav as raw audio, but it will include padding - 0 byte sequences spacing out the real AC3 frames, because an AC3 track doesn't fill a PCM track.

You may also find that the recording skips sometimes, and AC3 frames may get chopped in half, and so on... last time I did a capture I bodged together a program that recorded and validated the AC3 stream as it captured, so if it went wrong it would tell me and I could start again.

For capture, ideally I think it works best using a separate optical/USB box, so you know there's no messing around that can occur with a full soundcard.

I'm sure someone out there still has my AC3 files - and if they don't, I'll probably capture them again one day.

Once you've got the AC3 frames packed together in the file, you can just join the files together and they should decode okay.

DE

 

I have 1 set of your files but I don't know if it's the first set or the fixed set.

DE, 

Are you saying you wrote a program to record and validate the AC-3 stream, or did you do this using some software?  

Also, how did you remove the padding between frames?

Just checked my drive-I've got DE's 9 ac3 files split into three files for each film, but my ANH part 2 file is corrupt.