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+--- Thread: Deoldify Vapoursynth filter (/thread-3595.html)
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RE: Deoldify Vapoursynth filter - Dan64 - 20.10.2025
(10.10.2025, 10:47)didris Wrote: Hi, Dan64
I think the result with the new version is excellent - it's clear that this software has unlimited possibilities
https://archive.org/details/crvena-zvezda-fiorentina-1966-color-new-method
I also tried it on an old, worn-out Houdini film
https://archive.org/details/houdini-source
the result is quite good, except that it seems to emphasize the purple color much more than necessary - but overall it did a pretty good job and even corrected some of the bad scenes
thanks again for the excellent work
The Houdini clip is an example of movie that should not be selected for automatic colorizazition. The problem with this clip is that is damaged, and there is a lot of noise on the luma component. The colorization process is strongly dependent on the luminance. The reason of such strong dependency is that the model during the training sees only the L channel (lightness) as input. It has no access to the original colors, edges, textures, or semantics beyond what’s encoded in brightness. So it must infer color purely from luminance patterns:
- Dark regions → might be shadows, blue sky, black hair, etc.
- Medium gray → could be skin, concrete, foliage.
- Bright regions → could be clouds, snow, white paper, or specular highlights.
But luminance alone is ambiguous. For example:
A dark patch could be:
- Blue jeans (dark due to dye)
- A shadow on white fabric (dark due to lighting)
- Black leather
A medium-bright patch could be:
- Yellow banana
- Light brown wood
- Pale skin
Unfortunately are not available filters that are able to remove such kind of noise. In any case, if you still want to color such type of clip, you need to accept some compromise on the colorization process. With the upcoming release of HAVC 5.6.0, you should be able to obtain a clip like this one: Houdini_BN_small_havc_coloradjust.mp4
The upcoming HAVC release 5.6.0, has finally solved most of colorization problems, and now it is possible to obtain fully stable colored movies (if there is no noise on the luma).
Here you can find an example of clip colored with the new version here: children-of-the-damned-colorized-1964
Dan
RE: Deoldify Vapoursynth filter - didris - 20.10.2025
Hi, Dan64
what you have done is really amazing
your work can be safely used for coloring movies in Hollywood
if it is not a secret what is the script for the compromise coloring of the Houdini movie?
we are looking forward to the new version
and congratulations for the excellent work
thanks of course to Selur for his Hybrid
excellent work
RE: Deoldify Vapoursynth filter - djilayeden - 22.10.2025
(19.10.2025, 16:37)Selur Wrote: Can you share a sample of the original, the colored version and the used settings so others know what artifacts you are talking about?
Hi Selur and Dan,
About the issue I mentioned earlier — the compression or distortion on moving objects — I’ve just reinstalled everything, and it seems to have completely disappeared. So it was probably a mistake on my side!
I really want to congratulate you both for your amazing work on colorization. The results have reached an absolutely outstanding level of quality — truly impressive and consistent.
Wishing you all the best for your future developments and upcoming improvements. Thank you again for your dedication and passion — it really shows in the results!
Best regards,
RE: Deoldify Vapoursynth filter - Dan64 - 22.10.2025
Hello Selur,
please, could you rename "ScaleAbs – auto brighness&contras" in "ScaleAbs – LUT"
Thanks,
Dan
RE: Deoldify Vapoursynth filter - Selur - 22.10.2025
I uploaded a new test version.
Cu Selur
RE: Deoldify Vapoursynth filter - Dan64 - 22.10.2025
Thanks for the update
Dan
RE: Deoldify Vapoursynth filter - Dan64 - 23.10.2025
Hello Selur,
I finally released the new HAVC version: v5.6.0
I never imagined that one day I would write a guide with more than 100 pages describing the use of this filter ( well, there are a lot of pictures!
)Thanks again Selur for your essential and effective support.
Dan
RE: Deoldify Vapoursynth filter - Selur - 23.10.2025
I'll release a new dev and torch add-on version tomorrow.
Cu Selur
RE: Deoldify Vapoursynth filter - Selur - 24.10.2025
Uploaded a new dev and torch add-on.
Cu Selur
RE: Deoldify Vapoursynth filter - Dan64 - 26.10.2025
Hello Selur,
I just released a new HAVC version v5.6.1, to fix a bug that disabled DDColor tweaks under certain conditions.
Dan
P.S.
The missing subtitle language tag problem, was fixed in your last dev version.