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CapableMetal

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31-Jan-2012
Last activity
6-Mar-2024
Posts
160

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Post
#665059
Topic
Info: AviSynth and VirtualDub - speed improvement
Time

_,,,^..^,,,_ said:

 

So, it seems that AviSynth and/or VirtualDub DO USE GPU power too, or the old GPU simply slowed down the CPU speed?

I know that some plugins can take advantage of GPU. I have an nVidia GeForce GTX 570Ti and it does make some difference to processing video. Modern graphics cards are capable of assisting the CPU with processing however, as I think they're mostly OpenCL capable nowadays. I still think you're better off spending the extra on a higher-powered CPU than faster graphics card as that will definitely make more difference with AviSynth and VirtualDub.

If someone had some similar experience, please post here... if only I knew this, I would have replaced my old video card before... years before!

I have had great boosts with certain CUDA-enabled applications (Premiere Pro exports in about half the time), but I cannot say I noticed a speed difference with Avisynth, but then again my last GPU was pretty efficient too. I guess if depends on the kind of plugins you are using. There is an option in VirtualDub that enables GPU acceleration. Perhaps that might have something to do with it.

My other guess is that you may have simply freed up resources by getting a better GPU. 256MB is not a lot of memory for a GPU now, so I'm guessing it wasn't too powerful. There are much better performance gains made by getting a faster CPU/RAM/Storage combination. RAID and/or SSD's combined with a powerful CPU will get you better performance boosts than a GPU can provide in Avisynth.

The Intel i7's appear to be the dog's doo-dahs at the moment. Intel has actually crippled some of the features on the i7's with unlocked multipliers because they can be pushed to match the Xeon CPU's for a fraction of the cost.

Post
#665055
Topic
The Laserdisc Delima
Time

JawsTDS said:

Greetings,

I hate to admit, but I do not own any copies of GOUT in Widescreen, and I would like to change that.

But, I need help. I was considering the Definitive Edition or the Faces editions. I've heard the Definitive edition has been known for rotting but it has better quality than the Faces edition since it's CAV.

I guess it depends on what you prefer...

The Japanese Special Collection features a shrinking aspect ratio (ANH only), but seems to be 'smear-free' (no Digital Video Noise Reduction). These are the earliest widescreen releases of the trilogy from 1986/87 and have English audio with Japanese subtitles under the widescreen frame in the black letterboxed section of the picture. This release is CAV.

The Special Widescreen Edition has the same shrinking aspect ratio as the JSC (ANH only), but is generally more common and cheaper to get. These releases aren't plagued with the smearing found on later releases. Also not that there are three different pressings. The Pioneer/Mitsubishi pressings use the same master, and the later Technidisc pressing uses a newer master with a fixed ratio and more vibrant colour, but is subject to disc mastering issues usually presented in the form of picture cross-talk. These releases are CLV.

The Definitive Collection and 'Faces' are both THX mastered, which also brings DVNR applied fairly generously, meaning there can be smearing on mid/high-motion shots. They both use the same master from 1993, with DC being CAV and 'Faces' CLV. This same master is what was used to produce the 2006 'theatrical bonus' DVD's, which are known as GOUT due to the poor quality. I understand that the smearing is more apparent on the DVD than the Laserdiscs due to the extra resolution, but cannot confirm as I never watch these versions. Some consider these the definitive Laserdisc releases.

I also want to see the 1997 Special Edition version of ANH to see the pre-2004 "bad-CGI" Jabba scene, if it IS on the edition. Which is the best disc?

AFAIK, in the US, the Special Editions were only released in a box set together (in a black box, with the discs in black paper sleeves and all films squashed together, eg: ANH side 3 and TESB side 1 on the same disc). This set is pretty common and inexpensive, and features AC3 5.1 audio if you have the capability.

I understand the Japanese releases are the same, but with added subtitles underneath the frame, although I think the films are individually divided within the set. These sets seem to cost more, and be aware that the earlier Japanese sets look almost identical to the UK PAL set when lacking the OBI.

As you can see, each release has its issues, but it should give you a clearer idea of what to look for. More information is around this forum and other sites if do a little digging.

EDIT: there is some information I've seen somewhere that lists all FOX video-branded releases of the ANH SWE as the Technidisc pressing, but this is simply not true. Technidisc pressings can only be identified by mint-markings on the discs.

Post
#644021
Topic
Info: 1992 VHS Set - Star Wars Trilogy Special Letterbox Collector's Edition - any special and/or redeeming qualities?
Time

Knightmessenger said:

 

what really interested me was that a UK vhs set from 1994 was labeled "Digitally Remastered" yet did not have the THX logo on them. What was that source?

These are the same as the 1995 PAL releases. The 'digitally remastered' tag means they've had the noise reduction applied. The last UK VHS releases that are free from DVNR are the 'Special Widescreen Edition" tapes released around '91.

I also believe there was a special vhs boxset in place of the Definitive Laserdisc that just had a different lightsaber color on the box. It also came with a bonus tape that had the 1993 extras. I think that was the Executor set and that was UK Pal but that is not pictured and I don't know if that's the same as the "Digitally Remastered" set.

The Executor set has the same PAL THX transfers as the other 1995 releases, except the picture is slightly brighter, and has slightly nicer colour as a result, but the same DVNR smearing you'll find on all post-93 releases. It also released on 4 hour tapes (approx), as each tape is packed with extras, most (if not all, but I'm not certain) of which are available elsewhere in a higher quality.

Post
#634654
Topic
Converting MKV for use with Adobe Premiere Pro without re-encoding help
Time

Moth3r said:

You could remux the video & audio streams into a different container (M2TS) using tsMuxeR.

I can say from experience (albeit quite a long time ago) that this works. Premiere Pro is, however, quite slow when working with AVC compressed video files (due to the compression, I think).

You may also find problems (or not) when exporting due to caching, insomuch as that it will render certain cached frames over and over for the duration of the clip. The best bet is to export directly to a lossless format such as Lagarith or HuffYUV if you have the disk space as soon as its imported into Premiere, which makes it faster to edit and generally easier to work with.

Post
#633829
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

msycamore said:

Weird, those frames are definitely out of order. Great find D_M! What did they smoke when they mastered this one, so many odd anomalies in it.

I believe they used multiple film sources for the master of the JSC, as there colour differences and very slight size variations between 'matching' fields of a single frame, where the 'matching' field is captured from the same frame but seemingly from a different source. These fields tend to show up as mismatches due to the slight size or frame offset, and as far as colour differences go, one source seems to have an excessive yellowish tint to it and the other (and I believe less used source) seems to have stronger blues and more accurate colour.

If you skim through each field on a clean capture at pulldown pattern change points you will spot more than a couple of examples of this throughout the film, especially around Threepio and Artoo crossing the Tantive IV corridor battle, and before and after the Death Star chasm. Death Star walls turn from grey to grey-blue and back again, and faces go from jaundiced, to healthy, to jaundiced at pattern changes.

It seems like the creation of the master was a slapdash job, and it might explain why there are so many pulldown pattern changes.

Post
#632602
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

althor1138 said:

That was my intention in the beginning and then I thought I'd try to make it more presentable but like you guys say it just messes up detail etc etc. I think I've come full circle with it and I'm planning on releasing the 480p letterbox untouched and then an anamorphic that has levels adjusted and saturation adjusted if need be.

That sounds great!

djchaseb said:

I enjoyed the 720 anamorphic streams.

I feel that for the sake of clarity its worth mentioning this as there seems to be a lot of misunderstanding generally about what 'anamorphic' actually is.

Anamorphic widescreen means widescreen image 'squashed' to a fullscreen frame. Widescreen DVD's are mostly anamorphic (encoded to 720x480/720x576 and stretched back to widescreen on playback by the TV or DVD player). Those that aren't are those that have been letterboxed (like widescreen Laserdiscs) and therefore have fewer lines of vertical resolution for the film as the black bars occupy a large amount of space. You won't see the term 'anamorphic' on most Blu-Ray's, however, as they are encoded to a native widescreen resolution, being 1280x720, or 1920x1080. Anamorphic widescreen in HD does exist though, and is encoded to 1440x1080. This is mostly used on TV broadcasts for bandwidth reasons.

Hope that explanation was of use and won't be taken the wrong way, I just figured its useful information. ;)

Post
#630442
Topic
Question about the TB release of the SE ...
Time

rockin said:

Jetrell Fo said:

What about Adywan's color corrected versions? 

Didn't he do ANH & TESB?  

He used the 2004 HDTV/DVD sources I believe, which are pretty much the 2004 Special Editions not the 1997 ones.

As for his colour correction, I believe he simply tried to colour correct the 2004 sources back to how they were before 2004, but I don't know the specifics.

I don't know about ANH, but Adywan did recreate the 1997 Special Edition of TESB using the 2004 HDTV sources, and he reinstated the original Emperor using other sources, I assume from one of the '97 DVB captures, although I don't know the specifics. His colour correction was excellent, and it was released @ 1080p. The 5.1 Laserdisc soundtrack is also present.

Post
#630435
Topic
How to GOUT sync and IVTC?
Time

If you're trying to GOUT sync your captures, then the master you are synchronising to is the GOUT; the 2006 DVD 'bonus' theatrical edits, which are the masters for the 1993 THX releases of the films.

You can either use IVTC plugins for AviSynth and can do a good job of adjusting with pulldown pattern changes, provided they are set up correctly (TIVTC does a decent job). Manual IVTC can be difficult at first, depending on your experience level with AviSynth. The DoubleWeave() and Pulldown() commands are what you would be looking for, although not particularly well documented for beginners. There is also the long-winded SeparateFields()/SelectEvery() method, which can be easier to understand but lead to long and confusing scripts when you have a lot of pattern changes.

I don't know of any simple guides for this other than to suggest that Google is your friend, and there is a lot of useful information on various forums of people asking how to perform an accurate IVTC. That's how I learned to do it.

Which Laserdiscs are you trying to GOUT sync? There are hundreds of frames missing from some of the Laserdisc releases, so you may find GOUT sync impossible...

Post
#629289
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

Chewtobacca said:

althor1138 said:  Should I, in the future, convert to 48khz? 

I'd prefer that you didn't resample the audio because it degrades the quality.  One of the good things about an MKV release is that you don't have to do that sort of thing.  It's easy enough for people to do themselves.

I agree with this, a SRC is a simple task to accomplish, plus it leaves options open for those who want it 'pure'. I also really like the way you have released this, with the multiple videos so that people can remux should they wish. Really looking forward to your next releases!

Post
#629193
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

djchaseb said:

Need some help guys, I'm using TSMuxer to try and put the 720p stream to AVCHD format, it works but it doesn't recognize the PCM audio.  Any other programs that I can use? Or plugins to download?

Thanks!

AVCHD doesn't support audio at 44.1KHz. You will have to perform a sample rate conversion to 48KHz. Audacity should be able to do this and its free.

I'd like to thank you for this, althor1138. Your capture is nice and clean and well worth the download!

Post
#628777
Topic
Question about the TB release of the SE ...
Time

Jetrell Fo said:

So, is there a better than DVD5 source for these?  They look nice for their size but I'd guess these were made from raw capture files .....

They are DVB captures, I believe (there are visible signs of signal breakup in TESB at the end of the duel in the cave). DVB is usually captured directly bit-for-bit to a hard disk from the transport stream that has been broadcast. It is also broadcast in MPEG-2, often at lowish bitrates due to broadcast bandwidth limitations, and at DVD resolution. Some broadcasters even broadcast video at a resolution of 480x576, if my memory serves me correctly.*

The best source you could have is the original DVB capture, but unfortunately it is unlikely that it would have a significantly better quality, and would likely still suffer from the compression artifacts that plague MPEG-2 video. I also doubt it still exists after 10 or so years, as I doubt that it would have been viewed important to preserve it at the time (pre-2004).

Even if they had been captured raw from a connection to a satellite/cable/terrestrial receiver, the original source is still MPEG-2, I'm afraid.

*EDIT: I don't believe TB was, but its just an example of the kind of limited bandwidth we're talking about here, at least in extreme cases.

Post
#628434
Topic
Extras on SW laserdiscs and not on DVD or BD...
Time

Andrea, I'd just like you to be aware of my interest in you doing this too. I watched the Making of Star Wars for the first time the other day after capturing my Executor VHS set, and would love to see this transferred properly from laserdisc. It would also be nice to have all of these in one place, over 1 or more Blu-Ray discs, even if weren't going to go through all the filtering and upscaling that you have done with your ruLes projects I think it would be still worth doing. ;)

Post
#628127
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

Something I've just noticed, if you're encoding to 480p you may hit compatibility problems. I think that both AVCHD and Blu-Ray specs only allow for interlaced content at SD resolutions.

If you're keeping quality at a maximum, why not keep the audio as uncompressed PCM instead of encoding it to Dolby Digital? You should still be able to get a bitrate around 7Mbps with the 8GB limit of DVD9 if you really want to. Even 8Mbps seems quite high for 480i when encoding to h264/AVC, so you should easily manage the quality levels you're hoping for. ;)

Post
#628116
Topic
Star Wars Laserdisc Preservations. See 1st Post for Updates.
Time

Chewtobacca said:

The raw capture ends up being around 24gb when compressed to lagarith.  The x264  or mpeg2 encode ends up being around 21-22 gb so it's basically like having a raw capture of the laserdisc that can be popped into the blu-ray player.

I understand that you want to preserve quality, but the numbers are confusing you a bit, I think.  Just because the lossless AVI is 24GB doesn't mean that you need a similar size after encoding to a delivery format to have something that looks like a raw capture on the disc.  After your current encoding is finished, try using a CRF of 16 (which is absolutely sufficient to make something look like the source) and let us know the file-size.  I bet it will be something like 3GB.

I won't be resizing or cropping if at all possible.

Wait, so you're leaving it 4:3?  I'd strongly advise you to make it 16:9 anamorphic.  It won't really hurt the picture, and it will be far nicer for people to play it back without zooming in.

I have to agree with this, and with such a small resize it should still leave most of the scaling work to the TV.

If you do decide to keep it letterboxed, it would be worth cropping off the black bars in reinserting them as solid black for compression reasons. Solid black doesn't need much of a bitrate compared to letterbox bars from the laserdisc which are covered in analogue noise.

EDIT: In fact its wise to do this even if you are making it anamorphic!

Post
#624570
Topic
LEC games: X-Wing, TIE Fighter...
Time

Also, if you do a Google search for Markus Egger, he has created the new installers for the Windows X-Wing series releases, plus a few more LucasArts games (I think a Rogue Squadron installer is also there) so you can use your original discs to install under 64 bit Windows.

Darksaber's Ultimate Craft Pack is an easy way to update the in-game ships, as is the X-Wing Alliance Upgrade craft pack, I don't know if these packs are compatible with X-Wing, TIE Fighter or XvT though, but would be surprised if there wasn't some way of converting them ;)

Post
#624343
Topic
LEC games: X-Wing, TIE Fighter...
Time

I don't know about a hack, but someone has made new installers for the Collectors Editions, XvT and XWA to allow installation on 64 bit versions of Windows (the original installers are 16 bit and therefore don't work). There's also a lot of work being done to update the ship models in XWA to more detailed versions.

I've also had the DOS versions working quite well using DOSBox, although they need a tweaked configuration and enough CPU cycles to run properly.

Its really amazing the longevity of these games, there are still a few sites out there that are still updated (although not regularly) that focus on the original DOS versions! There are only a handful of games I can think of that still get this kind of support. A while back I read some comments from a couple of the original X-Wing team and there were some brief rumblings of a new X-Wing game or a remake, but nothing seemed to materialise from it. I think it was around the same time they started to release some of the Lucasarts back-catalogue on Steam, but a change of management soon put a stop to all that.

Post
#624174
Topic
Info: Star Wars: A New Hope (1997 SE) - GKAR Vs SET [ruLes] - split screen comparison
Time

Actually, I think you are be right about the aspect. I seem to remember having the same issue after converting it to a 2.35:1 aspect after capturing my own PAL set a while back, despite the sleeve stating its at 2.35:1! Even with the black bars uncropped (left and right only) that are normally overscanned by CRT TV's, its only in the region of 2.3:1.

I don't understand how SET is anamorphically encoded though, as stated in your description of the source materials for the comparison, as it has been upscaled to 1280x720 (which isn't anamorphic) from a letterboxed source (also not anamorphic).

No seeders on the torrent ATM, I'm going to leave my system on once its complete and help to seed it, although that could be a while as its currently only 0.1% complete. ;)

Post
#624109
Topic
Info: Star Wars: A New Hope (1997 SE) - GKAR Vs SET [ruLes] - split screen comparison
Time

_,,,^..^,,,_ said:

SET [ruLes] is based on 1997 Special Edition PAL THX laserdiscs; its sources are the german, french and french with english soundtrack laserdiscs, plus italian VHS Hi-Fi Stereo soundtrack, DTS theatrical soundtrack (in future DVD and BD releases) and AC3 NTSC US laserdisc soundtrack; video is AVCHD 23.976fps, 1280x720 anamorphically encoded, A.R. 2.25:1, X.264 encoded @8000kbps; audio is AC3 encoded @384kbps (NTSC US laserdisc english soundtrack 5.1, english 2.0 DS, german 2.0 DS, italian 2.0 DS); english, german and italian full and forced subtitles.

1280x720 is not an anamorphic resolution, and I thought the aspect is supposed to be 2.35:1?

The split screen comparison video is encoded using X.264 @3000kbps, 1280x720 23.976fps; audio is taken from the PAL french 1997 SE laserdisc, english soundtrack PCM, converted to AC3 @384kbps 2.0 Dolby Surround encoded.

In this comparison, is it possible to see the following differences:

  • the GKAR is affected by the pinkish tone, while the SET try to fix it with a moderate color correction - almost the time SET has better colors;
  • in GKAR, there are some MPEG2 artifacts due to DVB transmission and/or DVD compression, while the SET try to eliminate them using uncompressed sources and then an higher bitrate AVC compression
  • GKAR has german intro crawl and alien subtitles, while SET has english crawl and alien subtitles will be selectable - not present in this comparison
  • GKAR has slightly superior resolution, due to its digital presentation, while SET has lower resolution, due to its analog laserdisc sources - but sometimes the reverse is true!


Some details are lost, as the GKAR is taken from MPEG2 and upscaled, while SET is taken from X.264 and downscaled, but this is only a fast method to compare the two editions.

You can find it on myspleen

I'm going to download this and check it out, I'm looking to seeing how they match up.

Post
#622487
Topic
[OUT - ruLes] Original Unaltered Trilogy restored using Laserdisc editions - A New Hope (Released)
Time

_,,,^..^,,,_ said:

It will contain Heiry Hen's 70mm reconstructed soundtrack, and Belbucus mono soundtrack, plus the original five Dolby Surround soundtracks (english, french, german, spanish, italian).

Just wondering, are the Dolby Surround mixes going to be in the original matrixed 2.0 format or are they the faux-5.1 renditions found in the first OUT ruLes release?

Post
#620028
Topic
The 1997 OT Special Edition Trilogy Preservation Standards Thread (* unfinished *)
Time

_,,,^..^,,,_ said:

As I'm going to record the 1997 SE AC3 soundtrack from my laserdisc trilogy, I noted that, on the analog channel a mono soundtrack is present.

There are so many discussion about OT soundtracks, but so few about 1997 SE... I wonder if it's only a mono version of the stereo/Dolby Surround track, or a proper *different* mono soundtrack, originally especially mixed for those theaters without surround systems - I feel not the case, as in 1997 there were few theaters without surround sound... well, if the latter is true, it will worth a preservation!

I would be amazed if there had been a special mono mix for the SE. I thought that the only reason a mono presentation is on the disc at all is due to the AC3 track occupying the right channel on the disc?

It's worth checking out but, as you suspect, its probably either just the left track from the stereo mix, or a simple down-mix to mono. Either way, I doubt it has a lot of significance as, besides discreet channel mapping, all the '97 mixes (or the English ones, at least) should be the same.

Another thing: soon I'll begin the audio processing of SET; does someone knows if the german, the english UK and the english FR laserdisc soundtracks pitches are correct?

I can check the UK set for you tomorrow. ;)

Post
#619137
Topic
Star Wars: A New Hope [SET ruLes 1.0] - AVCHD & BD RELEASED!
Time

_,,,^..^,,,_ said:

About color correction, some thoughts came into my mind... "I made this simple color correction in Avisynth - that is a powerful tools, and free - in, counting only time devoted to "invent" the simple script and testing it, let's say ten hours; this is my first attempt at color correcting a movie, and I'm only a young old padawan learner, but the result is decent, surely better than the original pinkish mess, so... why THEY didn't do color correction with the laserdisc master at the time (1997) with all their powerful hardware - computers and also analog gears - and software, or why THE OTHERS didn't make something similar when they broadcast the DVB version (2004-5) when surely digital color correction was easy and not so expensive as, for example, could be in 1997?"

The broadcast versions pre-date the 2004 DVD box set release, so I think the broadcasts are from 2003 or earlier. Lucasfilm certainly wasn't going to spend time colour correcting the SE's when they were working on the prequels and the DVD set, and certainly no television broadcaster would bother. I guess if LCD displays were commonplace in late 90's then they may have made an effort to correct the colour.

BTW, the latest clips look great!

Post
#618999
Topic
Star Wars: A New Hope [SET ruLes 1.0] - AVCHD & BD RELEASED!
Time

_,,,^..^,,,_ said:

I must confess that I like this last "less is more" script way more than the long script I used before. To me, if not perfect, it's almost perfect - and, because "perfection is not of this world", I could be happy anyway!

Less certainly is more. I wish some of the studios would realise this when applying DVNR to blu-ray masters!

CapableMetal said:

If there's rainbowing, then I'd give it a try. I've had limited/poor results using some of these filters in the past, and I believe if your comb filter is doing a good job then you should have minimal rainbowing already.

I used the 925 S-Video because, in my comparison tests, its comb filter resulted better than my capture card. I didn't noticed rainbowing, but you know, "four eyes are better than two"... and six are better than four etc.

So, if anyone else would like to download the OUT ruLes test clip, and let me know its problems, it will be really helpful!

I thought you were using a DVD recorder pass-through for comb filtering? I know that the s-video on my CLD-2950 is horrible compared to the composite output (which I tend to use with the "HQ Filter" off, but cannot disable it on the s-video output), I thought that was the case with most LD players, with the exception of the very best NTSC players?

With laserdiscs, after median/averaging captures, I simply use DeGrainMedian for noise reduction (and it does a nice job for the most part), Msharpen used subtly to bring back some small details, if I upscale then a combination of nnedi3_rpow2 and a Spline64 or 36 resize, depending on my needs. If there is visible colour banding then a dithering filter (like GradFun3) can help.

Today was "capture day #2"... hard work... I finished to capture all the three editions, and carefully aligned them both temporally and spatially, and then medianed... now I'm testing the script I tested yesterday on OUT

here you are the usual clip at SENDSPACE (70MB)

download it, and tell me what do you think.

Watched it and its looking good, however there is a serious misalignment of one of your captures on the first shot (look at the small moon, the Tantive's engines, then the Star Destroyer). There is also a combed frame as Threepio looks up and says "What's that?".

I'm still testing a basic color correction, as the laserdisc picture is still pinkish - but not as GKar...

Not perfect, but not too bad... (^^,)

Looks great! Its difficult with the SE because all of the transfers suffer from colour issues, you're doing a nice job.

Next days I will test the filters you suggested - if you want to help me, could you please post an example script?

I occasionally add and remove filters as needed, but those tend to do a nice enough job. Using an MT version of AviSynth helps a lot. If you have a dual core CPU then I'd try it, it should greatly increase your render speed and give that idle core something to do ;)

I use avisynthMT too - but some filters still does not improve speed with it...

I just stick with SetMTMode(2,0) at the start of a script which is maybe not as fast as manually assigning filters to threads but is enough of a performance boost. My scripts tend to be quite basic because I've found filters that I prefer and that do a good job, all of which seem to work nicely multi-threaded. I depends on the filters you are using and how much filtering you're doing, of course. As you say, some filters just can't benefit. I tend to use the default filter settings a lot of the time too, only changing settings if something doesn't look right (for fine adjustment). I rarely have scripts that occupy more than 30 lines, usually they're only about 10 lines, but then I haven't tried layering different sources! The results I get from the filters I use are very good, too. Sometimes keeping it simple is enough, I'm sure I read on another thread that the upscaling scripts for DJ and You_too's project was only a few lines...

 

Post
#618886
Topic
Star Wars: A New Hope [SET ruLes 1.0] - AVCHD & BD RELEASED!
Time

_,,,^..^,,,_ said:

At the end, I found "the peace of mind" thanks also to all your feedbacks, and now I want to follow a new philosophy, "less is more"... in other words, use as few filters as I can - to not overprocessing as I did with my former script.

But, anyway, should I add a derainbow filter?

If there's rainbowing, then I'd give it a try. I've had limited/poor results using some of these filters in the past, and I believe if your comb filter is doing a good job then you should have minimal rainbowing already.

With laserdiscs, after median/averaging captures, I simply use DeGrainMedian for noise reduction (and it does a nice job for the most part), Msharpen used subtly to bring back some small details, if I upscale then a combination of nnedi3_rpow2 and a Spline64 or 36 resize, depending on my needs. If there is visible colour banding then a dithering filter (like GradFun3) can help.

I occasionally add and remove filters as needed, but those tend to do a nice enough job. Using an MT version of AviSynth helps a lot. If you have a dual core CPU then I'd try it, it should greatly increase your render speed and give that idle core something to do ;)