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AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

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Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#111

Post by renewiltord »

genman wrote: post #90
renewiltord wrote: post #67

Earlier quoted context omitted.

I can pretty easily distinguish useful LLM output from non-useful LLM output though others on this website seem to have lots of trouble. I think I can pretty easily do the same for things in the visual field. To be honest, part of why I'm successful is that I can draw use out of imperfect tools.

Oh boy. Fake detail is well, fake. It doesn't allow you to learn anything about the world beyond self-deception. But of course, if this is what rocks your boat then be my guest.

Skill issue.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#112

Post by dansky »

rado wrote: post #25
babypuncher wrote: post #6

Earlier quoted context omitted.

At least as of a couple of years ago, HDR support on YouTube has been pretty bad[1]. I know they've been working to improve things since, but I kind of don't blame people for walking away from that mess. 1. https://www.youtube.com/watch?v=DwDWQyBF9II

Thanks, will check out LTT's gripes, but I've been watching the following HDR channels forever and they look great: https://www.youtube.com/@SeoulWalker https://www.youtube.com/@Rambalac https://www.youtube.com/@Relaxing.Scenes.Driving

I'm also glad that Rambalac is back as he quit a few months ago. I've recently also started uploading 4K60 HDR content to YouTube [1] and it takes up to one week more time for them to encode than the SDR version. You can include your own LUT instead of YouTube conversion which seems to help. Here's an article and LUT [2] + a video [3] with valuable info. They allowed me getting DJI Pocket 3 HLG recordings to HDR10.

[1] https://youtu.be/0S8hw8Lrvlk [2] https://www.wesleyknapp.com/blog/hdr [3] https://youtu.be/4izJfgRtkZE

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#113

Post by dansky »

jiggawatts wrote: post #86
babypuncher wrote: post #6

Earlier quoted context omitted.

At least as of a couple of years ago, HDR support on YouTube has been pretty bad[1]. I know they've been working to improve things since, but I kind of don't blame people for walking away from that mess. 1. https://www.youtube.com/watch?v=DwDWQyBF9II

It’s still bad. Even as a totally amateur videographer making short clips of my holidays, YouTube is not good enough. HDR processing takes months! The SDR down conversion is “potato quality” even to my non-expert eyes, let alone a Hollywood colourist. Etc…

Instead of YouTube's HDR->SDR conversion you are free to use your own conversion LUT with mkvmerge. As I posted above, here are some links for info:

- Workflow and a valuable LUT: https://www.wesleyknapp.com/blog/hdr

- Some DaVinci Resolve Settings to use on SDR monitors: https://youtu.be/4izJfgRtkZE (though I upload 4K60 HDR at 37.5Mbit) which is enough for me slow content.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#114

Post by Grafikenjo »

dbspin wrote: post #81
Grafikenjo wrote: post #22

Earlier quoted context omitted.

I think you need to understand that it is not always a 'artistic tool' but a money or knowledge limitation.

I'm a filmmaker... I don't know a single DOP or director who wishes they could work in HD but is limited by finances or knowledge. Again, shaping light is the essence of cinematography. Modern DSLRs far surpass the dynamic range (although not the effective resolution) of 35mm film. And yet the image they produce isn't comparable. When it comes to image quality, bit depth is enormously more important than dynamic rang…

I'm a photographer and filmmmaker. And now?

The world is huge btw.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#115

Post by Dylan16807 »

cf100clunk wrote: post #109
Dylan16807 wrote: post #98

Earlier quoted context omitted.

I found this single discussion? https://news.ycombinator.com/item?id=19453745 And that's by avoiding the word "topaz", where I see no story results with discussions and not much of comment results.

I can help (I added ''remaster''): https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que... Links to the artciles found in those discussions are to some very enlightening efforts by Joel Hruska to find an upscaling solution related to what the person asked about. As somebody else mentioned, Topaz is out there and Hruska gave it a good shot, but it is not open source.

Right, I did find those, but only one had a discussion. Just making sure I'm not missing anything, so thanks for the clarification.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#116

Post by jiggawatts »

zamadatix wrote: post #108
blackoil wrote: post #95

Earlier quoted context omitted.

That would be true on Mac also?

Firefox supports HDR video output on Mac since release 100.

What grinds my gears is that HDR output in a lot of software is "Mac only", even though Windows supports HDR video output just fine, and has had support for wide-color and HDR since Vista!

E.g.: DaVinci Resolve has HDR capable only in its Mac version.

Similarly, generating a Dolby Vision file is basically impossible on Windows.

"Just buy a Mac" seems to be the best and most practical guidance I've seen for HDR workflows...

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#117

Post by jiggawatts »

dansky wrote: post #113
jiggawatts wrote: post #86

Earlier quoted context omitted.

It’s still bad. Even as a totally amateur videographer making short clips of my holidays, YouTube is not good enough. HDR processing takes months! The SDR down conversion is “potato quality” even to my non-expert eyes, let alone a Hollywood colourist. Etc…

Instead of YouTube's HDR->SDR conversion you are free to use your own conversion LUT with mkvmerge. As I posted above, here are some links for info: - Workflow and a valuable LUT: https://www.wesleyknapp.com/blog/hdr - Some DaVinci Resolve Settings to use on SDR monitors: https://youtu.be/4izJfgRtkZE (though I upload 4K60 HDR at 37.5Mbit) which is enough for me slow content.

This only allows a single LUT for the entire video. For comparison, Resolve will perform Dolby Vision tone mapping from HDR to SDR on a clip-by-clip basis.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#118

Post by anjc »

dreamcompiler wrote: post #104
anjc wrote: post #87

Earlier quoted context omitted.

I also restored some Super 8 footage recently and had great success. The biggest win I had wasn't resolution, but slowing down the speed to be correct in DaVinci, and interpolating frames to make it 60fps using the RIFE algorithm in FlowFrames. I then used Film9 to remove shake, colour-correct, sharpen and so on. Correcting the speed and interpolating frames added an amazing amount of detail that wasn't perceptible t…

How did you do the original scanning? I have a ton of Super 8 that needs to be scanned.

I bought one of the cheapish (€300) Super 8/8mm scanners on Amazon. It scans quite quickly while displaying the results on a small screen.

It's a nice convenient device, but I can't now unsee the artifacting and compression arising from it. If I were to do it again I'd just pay a service to scan properly, or build a rig to photograph the frames.

On the other hand, I'm very pleased to have scanned and archived the films given that they've been unseen for so long and can now be shared easily.

Re: AI-Powered Nvidia RTX Video HDR Transforms Standard Video into HDR Video

#119

Post by empiricus »

cmcconomy wrote: post #21
manmtstream wrote: post #17

Now it will be absolutely impossible to accurately convey the artistic intent, when there's no way to know how it will look on consumer devices.

I think we lost that battle with motion interpolation on consumer TVs

Very easy solution: start filming in 120fps and then the TV motion interpolation does nothing.
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