originaltrilogy.com
Upscaling
timdiggerm
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I've seen a lot of good work done in the Preservations forum with upscaling, mostly GOUT >>> not-crap. I'm wondering if someone can point me in the right direction to reading up on how good DVD >>> HD upscaling can be done. I know such things'll never equal the quality of a real HD source, but I also know it can be done a lot better than I once expected.
AntcuFaalb
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The Interweb is a Series of Tubes.
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
AntcuFaalb
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The Interweb is a Series of Tubes.
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
AntcuFaalb
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The Interweb is a Series of Tubes.
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
AntcuFaalb
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The Interweb is a Series of TubesHomework: Upscale an anamorphic DVD of your choosing and post your script here!
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
AntcuFaalb
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The Interweb is a Series of TubesPlease let me know if you need me to clarify anything. This stuff is pretty hairy.
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
You_Too
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I'm just wondering about one thing with ResampleHQ: Let's say one was to upscale a perfectly color-reference graded DVD using ResampleHQ for the downscaling after nnedi3. Wouldn't this gamma-aware behavior alter the picture?
AntcuFaalb
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The Interweb is a Series of TubesYou_Too said:
I'm just wondering about one thing with ResampleHQ: Let's say one was to upscale a perfectly color-reference graded DVD using ResampleHQ for the downscaling after nnedi3. Wouldn't this gamma-aware behavior alter the picture?
Not necessarily. The point is that other downscalers alter the picture by not being gamma-aware. From the ResampleHQ website:
Our eyes don't perceive light linearly. Twice the photons will not appear twice as bright. To account for this, colorspaces with small bit widths (all the ones in Avisynth) are gamma-compressed to give a more eye-friendly representation, ensuring bits are evenly distributed across all perceived intensities.
These gamma-compressed colors must be converted back to a linear colorspace prior to blending, or you get incorrect results. None of Avisynth's filters do this correctly. For rare scenes with a lot of sharp contrast this causes very pronounced errors. For most other scenes the errors are more subtle. It can also effect the quality of anti-aliasing on edges with a lot of contrast (such as in outline-heavy anime and cartoons).
If you're doing color-correction after upscaling/downscaling, then all of this doesn't matter.
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
Space Kaijuu
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AntcuFaalb
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The Interweb is a Series of TubesSpace Kaijuu said:
It seems that version 8 of ResampleHQ is really buggy. I had to go back a couple of versions to keep it from screwing up the video.
Wow, weird! What bugs did you see? Can you post a sample?
"And I'm shocked at you Moth3r for being off-topic, Because if people off-topic you say "stay on-topic, STAY on-topic, STAY ON-TOPIC", and we are not in the Off topic section of OT.com, now are we?" –pat man
"Look again." –Moth3r
Space Kaijuu
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poita
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Another method is to break the image into tiny cells first and then apply upscaling. This is the method that the teranex uses and it gets great results if your source is pretty clean.
althor1138
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EDIT: Nevermind I found version 7.
Can somebody send me a link to an older version of resamplehq? I'm having very strange issues with version 8.
Luke threw twice....maybe.