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# Proposal: gain maps for PNG
**This proposal has no official standing in PNG WG and is presented for discussion only. Do not implement.**
## [3 Terms, definitions, and abbreviated terms](https:…
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ultrahdr_app is a very useful tool for non-coders, but it doesn't support API-4.
It would be even more useful if it could be used to generate Ultra HDR images from separate SDR jpeg and gain map inpu…
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**Describe the bug**
MotionPhotos are a cursed file where a video appended to a jpeg file. `cjxl` will currently fail to transcode the image with lossless bitstream reconstruction data with the error…
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I wanted to decompress image I took using my pixel 6 pro (UltraHDR option enabled, together with P2 colorspace, does not contain mjpeg stream with video). It gives me error hinting at added text encod…
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### Description
This should give better GPU memory usage than our current half-float textures, which could make a significant difference to render speeds since the environment map is a bit of a cache…
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Hi,
I build the library successfully and try to run some hdr image with the ultrahdr_app demo,
when I gave the command :
./ultrahdr_app -p ./data/Gain_Map_Sample_Photos/samples_avif/01.avif -w…
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**Describe the bug**
Pixel Camera 9.2 introduced "Ultra HDR" setting on previous Pixel devices (in my case, Pixel 6 Pro). This setting is on by default after the update. Motion Photos taken with this…
rhssk updated
8 months ago
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### Description
`.hdr` and `.exr` files are commonly used for generating HDR `envMaps` and scene backgrounds, they work nicely as long as you keep them within reasonable file size which, in turn, c…
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Hi,
I tried to build the code on my Ubuntu vm, and it said that the third party library doesn't exist, and I checked the folder again, the googletest and libjpeg-turbo is not pull from git.
I tried…
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### Channel ID
qatartv.qr
### Stream URL (optional)
https://qatartv.akamaized.net/hls/live/2026573/qtv1/master.m3u8
### Notes (optional)
_No response_
### Please confirm the following
- [X] I h…