alistair7

This is working since 0d89f89, but it hasn't made it into a release yet. Prior to that change, cjxl(_ng) didn't add metadata to the JXL output. I believe the library...

I was reluctant to rely on `jxlinfo | grep` too, so I wrote a minimal Python script for detecting reconstructable JPEGs by parsing the JXL container and looking for a...

> if head -c 64 test.jxl | grep -qa "jbrd"; then ... That's definitely easier! But bear in mind the `jbrd` doesn't have to be in the first 64 bytes...

The fix for #2463 has solved my issue here (albeit at the cost of 33% of the reference frame slots :sweat_smile:). This can be closed unless you want to keep...