HDR support in x265 and nvenc HEVC

    Zitat von Wickyed

    Do you have a simple solution to false the flag before editing ?

    Did that ffmpeg mod I linked earlier work for you? I've now created a filter preset in Premiere that can un-do Premiere's HDR-to-SDR processing that it performs on any file flagged as HDR. Ultimately, if you can un-flag it before using premiere, that would be best, but if you can't, go ahead and use my preset which I've linked on a new HDR encoding guide I wrote here:

    HDR Encoding Guide for Premiere Pro

    That post also includes a tool I created for correctly flagging the brightness of the source in HDR metadata as well, which would be really helpful even if you can import the footage raw like I do.

    Zitat von morphinapg

    Did that ffmpeg mod I linked earlier work for you? I've now created a filter preset in Premiere that can un-do Premiere's HDR-to-SDR processing that it performs on any file flagged as HDR. Ultimately, if you can un-flag it before using premiere, that would be best, but if you can't, go ahead and use my preset which I've linked on a new HDR encoding guide I wrote here:

    HDR Encoding Guide for Premiere Pro

    That post also includes a tool I created for correctly flagging the brightness of the source in HDR metadata as well, which would be really helpful even if you can import the footage raw like I do.

    Thank you very much for the patch, indeed i don't know if it works inside adobe premiere because after a clean installation the output of the enoding is good. I mean by that with the false flag and without it, the result is the same after x265 Voukoder but i don't know internally if it works.

    Zitat von Wickyed

    Thank you very much for the patch, indeed i don't know if it works inside adobe premiere because after a clean installation the output of the enoding is good. I mean by that with the false flag and without it, the result is the same after x265 Voukoder but i don't know internally if it works.

    Very strange, even the colors are the same? Perhaps Premiere treats HLG differently.

    Zitat von morphinapg

    Very strange, even the colors are the same? Perhaps Premiere treats HLG differently.

    Yes it is the same, HLG does not seems to be different before and after the encoding.

    What is very strange is that even when I'm using the Premiere encoder to output in HDR PQ the colors are pretty the same...

    I need to test all the encoded files on screens supporting HLG and PQ to see if there is any difference.

    Zitat von Wickyed

    Yes it is the same, HLG does not seems to be different before and after the encoding.

    What is very strange is that even when I'm using the Premiere encoder to output in HDR PQ the colors are pretty the same...

    I need to test all the encoded files on screens supporting HLG and PQ to see if there is any difference.

    The problem is, Premiere is reading your HLG file as SDR. That's okay if you turn around and export as HLG, but the native export will be HLG displayed as SDR, encoded in an HDR container. Just like you could encode any SDR video in HDR mode through premiere's HEVC codec if you want.

    HLG is designed in a way that if you read it as SDR, it still looks fairly good, but the colors being the same is an oddity. If the source has BT2020 colors, then Premiere would likely decode that into rec709 color space, meaning you'd need to perform a conversion using the colorspace filter to fix this (input rec709, output bt2020), and then select bt2020 and HLG options in x265 for correct output. Or skip the colorspace filter and use HLG paired with rec709 colorspace and primaries, although that's not recommended.

    However, if Premiere is just ignoring the color space, then you may be seeing the native rec2020 color space, which SHOULD look slightly weird in the preview monitor. Like slightly desaturated, maybe a little yellow tinted. If that's the case then you would be free to encode to x265 with HLG and bt2020 options without using the colorspace filter.

    Do you have a sample source file I could test? I could maybe give you some advice on how to encode it properly.

    I'm currently not at home with the camera (SONY FDR AX 700) to give you some footage sorry. All I have are private recording.

    I will be back for christmas and I will record special footage in HLG for everyone as RAW materials.

    Do you have any requirements for the recording or a simple 4K HLG file would be enough ?

    Maybe it should be good to create a special thread for those source material ?

    Thank you for your help, it should be very time consuming :).