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Join date
20-Nov-2020
Last activity
15-May-2021
Posts
8

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Post
#1429685
Topic
Star Trek - DVD-Restoration and Upscale Project
Time

@sade1212:

Regarding Season(s) 5+ :
I will do a test and let you know soon, ok? But I did a sample earlier with previous settings and the results looked encouraging (but as you have said, the souce quality does get better, so the results will also look better).

Regarding the CFR at 23,976 FPS :
As I have already stated, I am working from PAL, since I have already had my experiences trying to establish a CFR from the NTSC DVDs and found it to be a horrible experience.
But still, I will explain (although I am not sure if this is applicable to NTSC sources with VFR, so please let me know what you have found out on that end).
I am using StaxRip to handle the Framerate. Here, I apply QTGMC (with a custom made and rather complicated script) for Deinterlacing in Progressive Full Repair Mode and then I use “Assume FPS” towards 23,976 FPS. Works well for PAL.

As for the rainbowing :
That’s also done with StaxRip, the filter here is called “DeCross” (which needs to be manually added as a dll.-file to the AviSynth directory and has to be applied before the Deinterlacing, otherwise it doesn’t work).
I must admit, it does not catch everything, but it reduces a lot of rainbows well enough to be “less noticeable”.

As for smearing and detail loss with faces :
That’s kind of hit and miss, depending on the source. Often, faces in the background are a real pain, since there is little detail to begin with. Still, in my case, a combination of these factors helped:

  • StaxRip Filters (QTGMC with adjustments on detail improvement and sharpness increase)
  • Using a multi-step-approach with the AI-based enhancement software “Topaz Video Enhance AI”
    (First Pass: A Model called “Gaia HQ” at 100%, purpose: Deblock/Denoise & Detail Recovery
    Second Pass: A Model called "Artemis LQ at 1080pHD, purpose: resolution upscale on low quality input
    Third Pass: A Model called "Gaia CG at 4K, purpose: resolution upscale with Detail Enhancement)
  • DaVinci Resolve
    (Adding Grain, Texture and Feature Recovery)

Not all the faces (especially in the background) look great, but they do look like faces with little to no distortion, which was important to me.

Also, I fairly recently started working exclusively with higher bit color spaces (10 bit in StaxRip and 16 bit in Topaz, back to 10bit in DaVinci), since the original 8 bit had banding issues which were handled quite nicely once I switched/encoded/rendered to/in/with higher bit ranges, which is important on DS9 whenever there are larger areas of the same color (like uniforms, walls or space) or sudden changes in light levels (like with flickering lights or explosions, something which almost drove me crazy during the pilot when the station lights on the promenade kept cutting in and out, causing hard lines on everything they touched).

Hope I could help, I will post two samples from my favorite season 6 episode “Sacrifice of Angels” here soon so we can compare quality between season 1 and 6 - that way we can see, if my workflow can be applied there as well.

Post
#1427072
Topic
Star Trek Deep Space Nine - NTSC DVD Restoration & 1080p HD Enhancement (Emissary Released)
Time

Hello guys, my new topic just got an update, including new comparison images and a video sample. Check it out
(Category: “Preservation of other properties”, topic title “Star Trek - DVD-Restoration and Upscale Project”).

To make it easier, I will post the links here as well (only this time, password is “DS9Enhanced”, written without quotation marks).

Comparison images (215 images, 250 MB):
https://www.dropbox.com/s/jsllel6h2lpheqg/SD vs HD Images - 1x01%3B02 - Der Abgesandte %3B Emissary.rar?dl=0

Video sample (4K at 2880x2160p, 4:3 resolution without black bars left and right, h265 encode in mkv; 2,5 GB):
https://www.dropbox.com/sh/pawv5udlr7g5t1e/AABPHoORvlW2yyoZwpgiX6-la?dl=0

Let me know what you think.

Post
#1427071
Topic
Star Trek - DVD-Restoration and Upscale Project
Time

And here is (exception, only for this episode to see the quality in a 4K videostream) a sample from the pilot episode. It contains the first 16 minutes of the pilot in 4K (folder size about 2,5 GB; format h265 in mkv).

Please be advised that no further video samples will follow, only image comparisons. For more samples and additional information please contact me via private message.

Link:
https://www.dropbox.com/sh/pawv5udlr7g5t1e/AABPHoORvlW2yyoZwpgiX6-la?dl=0

Post
#1426867
Topic
Star Trek Deep Space Nine - NTSC DVD Restoration & 1080p HD Enhancement (Emissary Released)
Time

Hello community, I used to be user “Animaxx” around here before - for several reasons that I will not go into with this post, I had to change a few things about my avatar and my work.

I just wanted to let you know that I am not dead, just been away for a while.

I have continued the project and have now created a new open topic, which can be found be searching the discussion category “Preservation of other properties” under the title “Star Trek - DVD-Restoration and Upscale Project”.

Check it out if you like!

Post
#1426866
Topic
Star Trek - DVD-Restoration and Upscale Project
Time

With this project I want to showcase to fans of DS9 what can be possible in the universe of (AI-based) upscaling.

Those of you who have watched Deep Space Nine recently on modern/bigger screens know what the quality of the DVDs, streaming services and WEB-files look like: Most of the episodes (especially during earlier seasons) display problems like blurriness, areas out of focus, issues with grain (luma and chroma), washed out colors, a non-HD-conforming color palette (which makes sense given the technology back then), compression or block artefacts, interlacing issues and problems with motion fluidity originating from variable frame rates.

The approach of this project (in a nutshell) is to do the following steps to assure that the visual quality improves and the result is better “watchable” on a 4K screen:

  1. Take the source material and extract the raw data (working from PAL sources here)
  2. Adjust the audio track so it will fit with the new constant frame rate of 23,976 FPS (finished video)
  3. Re-Encode and filter the source material to get rid of several issues, like:
    • Rainbowing, Interlacing, Artefacts, Block Compression, Haloing, Ringing, Aliasing, Softness, Banding
  4. AI-based image enhancements and upscaling, like:
    • Detail enhancements, increase of focus, upscaling of the picture dimensions (to 1080p or even 4K)
  5. Final Encode/Rendering with additional image improvements. like:
    • Custom Aspect Ratio (original 4:3 on HD-resolution without black bars left and right
    • Correction of Pixel Aspect Ratio
    • Adjustment of the SD-color-palette to more closely resemble an HD-like look
      (the work here is based on what I have seen on the DS9 Documentary “What We Left Behind”)
    • Working in grain to give a “less plastic/waxy look”
    • Sharpening an Unsharpening to create a more “pseudo-detailed look”
    • Encoding in a more HD-compatible, modern file-format

If you wish for more detailed information (like the complete guide/workflow on “how to do the project”, comparison images, samples & more) and other stuff, please contact me via private message and I shall do my best to provide what you are looking for 😉

I will do regular updates with images on what I am currently working on, so you can see what is possible - I will also actively discuss the project with you and will try to answer questions (if I can).

Stay tuned.

EDIT:
Ok, the general password to access all the files around here is: “DS9Enhanced” (without the quotation marks).
Please be advised, that all comparison images have the following characteristics:

  • Left Side: Original SD-resolution image (PAL-DVD) without crop oder modifications
  • Right Side: Upscaled 4K-resolution image (2880x2160p) with cropping left and right
  • Images are displayed through a media player that stretches the image to fit the screen, so the right
    sided image looks a little “wider” than the left, but the original aspect ratio is maintained