Nicholas Hayes

> Know of any tool that can convert 32-bit TIF to HDR PNG? While checking the av1-avif repository I came across an [issue](https://github.com/AOMediaCodec/av1-avif/issues/186) that mentioned the AVIF HDR support in...

> I've only found TIF, PSB, and PSB keep full color with Photoshop thus far, and I suspect that's probably going to be generally true of other tools for OpenEXR/HDR....

> FYI, the following image renders properly as HDR in Chrome, but opens as SDR (16-bit sRGB profile) when opened via avif-format in Photoshop. That is the expected behavior, the...

> If that AVIF has no embedded profile, any idea what Chrome assuming to render? From the Chromium source code, it looks like it may be creating an appropriate color...

> Does that mean a unique enum / reference to save space wasted with embedding common color spaces ? Yes, it is a simpler alternative to ICC profiles used by...

> Have you been able to convert an image with an embedded profile into an HDR AVIF and have it display properly in Chrome or FireFox? I have not tried...

I recently added support for generating an ICC color profile from some of the NCLX profiles. I am now trying to get the AVIF HDR images to load in 32-bit...

The ICC generation support is for Photoshop, so that it gets an ICC profile when loading images that only use one of the supported NCLX profiles. I managed to get...

There is a CMYK + Alpha [test image](https://github.com/libjxl/conformance/blob/master/testcases/cmyk_layers/input.jxl) in the libjxl conformance repository. libjxl shows that image has having 3 color channels (CMY) and 2 extra channels (K and Alpha).

> When trying to run the plugin I get an error saying "CreateProcessFailed: The handle is invalid". That is strange, the process launching code should not have changed between version...