I have two issues regarding the codec selection on Netflix.

AV1
The first one is that AV1 can have HDR, but unlike HEVC, there is no choice or even an indicator if it has HDR or not (not every title has it). So right now, I can only see it after the download and then have to re-download it as VP9 or AVC (it seems VP9 has no HDR, at least not in my cases when AV1 did.)

This issue has already been discussed in this thread, along with other comments regarding DoVi and premium/basic account (only basic seems to have SDR on all titles).
But my only request is if there could be an indicator if it has HDR or not, just like HEVC already has.

Codec selection
The second question is about the fact that not all titles have all codecs. However, it still lets me select and add the codec to the queue.
For example, when I select a movie, it shows me the bitrate and size for AVC high (e.g. 1 kb/s and 1 GB). When I then select another codec, like AV1, it will analyse that, and show the new values (e.g. 2 kb/s and 2 GB). However, when there is no AV1 for this title, the drop-down will keep showing the values for AVC, while still allowing me to add it to the queue (intead of telling me that there is no AV1). It then proceeds to download AVC high.

I cannot tell if I had this issue on other sites as well, since I haven’t used some for a while, but this should be implemented for all sites. If a codec is not available, it should tell me that instead of quietly adding it to the queue and downloading something else.

Suggestion: When I click AV1 or VP9 and SF notices they are non-existent, it should give me a popup, informing me about the missing codec, and then grey it out so cannot select it again.

Maybe it would even be possible to analyse all codecs, but not every resolution/audio/subs. Meaning it will only check if HEVC, VP9 and AV1 exist. If not, it will disable the checkboxes right away, so I cannot select them in the first place. Only when I actually select the codec (AV1 for example), it will analyse all resolutions and bitrates as usual.

And lastly, just to be sure: HEVC on Netflix really has no SDR, only HDR or DV?