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Moth3r

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Join date
26-Oct-2004
Last activity
16-Jul-2017
Posts
4,892

Post History

Post
#294328
Topic
Difference in quality of laserdisc players
Link
https://originaltrilogy.com/post/id/294328/action/topic#294328
Time
The D925 and the earlier 2950 were the best players on the PAL market, but they were only midrange when compared to the top NTSC players like the CLD-97. Do you need to have the facility to play PAL discs?

Yes my D925 was used in my Star Wars transfers. The comb filter is outdated by today's standards, and unfortunately cannot be bypassed (as the D925's composite output is just the "recombined" s-video). Here's a really old thread with screenshots comparing the difference between s-video and composite connections.

What kind of TV do you have? An LCD display will show up noise more than a CRT.
Post
#294311
Topic
How to make a Star Wars DVD with the restored mono mix PCM
Link
https://originaltrilogy.com/post/id/294311/action/topic#294311
Time
A mono PCM track is 768kbps; three stereo AC3 tracks are 576kbps. It sounds like your re-encoded video contains sections where the bitrate is too high to multiplex with the PCM.

The maximum allowable bitrate for video+audio+subs on a DVD is 10.08Mbps. From what I gather about Muxman, it can deal with the occasional spike above this value, but any sustained excess will cause the muxing operation to fail. (Which is a good thing, because playback of such a disc would be problematic on some DVD players).

So yes, in your case you will need to compress the audio to AC3 or MP2, or encode the video again using a lower maximum bitrate.
Post
#294227
Topic
Difference in quality of laserdisc players
Link
https://originaltrilogy.com/post/id/294227/action/topic#294227
Time
[Moved thread to technical discussion section]

Note that the output quality depends mostly on how good the laserdisc pressing is in the first place; some films had excellent transfers, others were very poor.

You do get a better picture with the higher spec players; it's not vast but the reduction in video noise level and jitter is noticeable.

The video on a laserdisc is stored as an analogue composite waveform. Using the SCART connection will not give you any improvement with a laserdisc player because it's still the same composite video signal that's output through the cable.

You might get an improvement using SCART if you have a player that's been modded to output RGB, or use the s-video output, but even then any improvement is dependent on the comb filter in the player being better than the comb filter in your display or capture device.

My D925 is loud when starting up or changing sides, but not particularly loud during normal playback. It's louder than a DVD player, but that's to be expected due to the sheer size of the disc! I don't know whether the noise of your player is inherent in the cheaper models, or whether it might be due to a a motor fault or misalignment.
Post
#294210
Topic
Info Wanted: are preservation projects valid anymore?
Link
https://originaltrilogy.com/post/id/294210/action/topic#294210
Time
There are many reasons why laserdisc captures are still valid Preservation projects, even when the film has been released on DVD. Two examples: the pre-THX Star Wars laserdiscs don't exhibit DVNR side effects, the Thunderball laserdisc has more image and a different colour scheme.

There have been several discussions about creating Custom DVDs from the GOUT discs - improving the picture, converting to anamorphic, or adding alternative audio tracks.
Post
#294104
Topic
Info: GOUT Anti-aliasing
Link
https://originaltrilogy.com/post/id/294104/action/topic#294104
Time
A suggestion on style - if you put the dll files into your avisynth plugins folder, they are loaded automatically. You can do a similar thing with functions; so you could create a text file containing LimitedSharpenFaster, save it in the plugins folder with the extension avsi and the function will be available from any script you create.

Simplified, your script then becomes:
MPEG2Source("[2]_VTS_03_1.m2v.pulldown.d2v")
Crop(0,102,0,-104,align=true)
EEDI2().TurnRight().EEDI2().TurnLeft()
LimitedSharpenFaster(dest_x=720, dest_y=360)
addborders(0,60,0,60)
... which is much easier to read.

(My quick calc found dest_y should be 365.3, say 366, so the addborders would be 57 each. The difference is probably not worth worrying about.)

"AAA" I believe was a function called Anime Anti Aliasing, now replaced by its author with a function called "SAA" (Simple Anti Aliasing). (Doom9 Thread). I haven't really looked into this myself yet so I'm still a bit fuzzy on specifics.
Post
#294010
Topic
Creating VOB's/Authoring DVD's
Link
https://originaltrilogy.com/post/id/294010/action/topic#294010
Time
Creating a DVD from your raw AVI file requires two distinct stages:

1. Encode video and audio into a format compliant with the DVD specs; i.e. MPEG-2 video and PCM/AC3/MP2 audio. The encoded files are sometimes called "assets".

2. Use the assets to author a DVD. This involves multiplexing video and audio together, adding menus, subtitles and chapter points.

Freeware tools for MPEG-2 video encoding include HC Encoder and QuEnc, and Aften is a free tool for encoding AC3 audio.

Free tools for authoring include DVDAuthorGUI and Muxman.

VSO ConvertXtoDVD is a (shareware?) all-in-one solution that has had good user comments.
Post
#293387
Topic
How to make a Star Wars DVD with the restored mono mix PCM
Link
https://originaltrilogy.com/post/id/293387/action/topic#293387
Time
Originally posted by: Kurgan
I guess you could post links on where to get all those programs which would save some time... Done.
Otherwise, I was curious, is there an easy way to strip out the "Lego Star Wars" stuff and how much space would that free up on the DVD?
This method strips out everything, you're basically re-authoring a movie-only disc. I think the disc comes to about 7GB, which still leaves about 1GB spare on a DL disc.Originally posted by: livserge
Could you please post a more detailed guide to this?
Sure. Which part do you need more details on? Is it getting the celltimes.txt from PgcDemux or using it with Muxman?
Post
#293240
Topic
70mm mix to ’93 mix comparison (Released)
Link
https://originaltrilogy.com/post/id/293240/action/topic#293240
Time
(Carried over from the mono mix thread)
Originally posted by: Belbucus
Originally posted by: Arnie.d
“Belbucus, what is your next project? Recreating the 6-track? ”

(Not sure if you were kidding).… but the serious answer would be that the only available source for the discreet elements (outside of the Lucasfilm vault) would be from a 70mm print. Find me one and we’re in business! I could probably work up a Prologic version - stripping the additions off of the ‘93 mix, but personally I find them all to be welcome additions.
Theoretically, a large proportion of the discreet elements may have been worked into the '97 mix. I'm thinking elements such as the LFE channel and full-range surrounds might be present in the 5.1 Dolby Digital track off the SE laserdiscs. (The 5.1 mix on the '04 DVDs should be avoided for obvious reasons.)
Post
#293198
Topic
The Mono Mix Restoration Project (Released)
Link
https://originaltrilogy.com/post/id/293198/action/topic#293198
Time
Belbucus - thanks for posting those details. It shows just how dedicated you were and much care you took with this project.

adywan (or anyone else) - I've no problem with you using parts of this for your project.

Over the weekend, I've been testing out a DVD authored with mono PCM audio and the video taken from the official Region 1 GOUT disc. I'm pleased to say there seems to be no problems with playback at all - all three players I tested the disc on played flawlessly. My Dolby Digital receiver plays the sound from the front left and front right speakers, but turning on pro-logic processing forces it to play out of the centre speaker.

In the technical section, I've posted a quick guide if you want to make your own custom DVD: LINK (NB: Anyone requesting a fully-authored DVD will have their posts removed).