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why not try NicerConnection?
output image: [1.jpg.zip](https://github.com/user-attachments/files/15837536/1.jpg.zip)
The original image can play on MacOS(Version 13.4.1) correctly. I use mediainfo to parse file structure and found something difference.
Is there something wrong on the color conversion?
I have confirm the rgb matrix take from decoder already has color incorrection
Attach file is h265 stream https://github.com/strukturag/libheif/assets/22312935/914cff8b-23ec-4cd3-ab70-9f6bdc92e5a0 [1040g008313u8g0qp1m4g5nkalku094d2qla98k0.h265.zip](https://github.com/user-attachments/files/15839201/1040g008313u8g0qp1m4g5nkalku094d2qla98k0.h265.zip)
> > It's strange that your tool says RGB colorspace, but Chroma 4:2:0. > > ... and matrix coeffs identity? exiftool indeed does not see any nclx or ICC either,...
> My assumption is that these other libraries have sanity checks to change RGB 4:2:0 to Unspecified (and just treat that as 709), because shoddy developers assuming 0 is default...