How to tell if .MP4 contains Dolby Vision or HDR10 metadata?

[libertyforall]

Is there a way Subler can indicate to me if .MP4 contains Dolby Vision or HDR10 metadata in a 4K H.265 video file?

[Damiano Galassi]

Those are marketing buzzwords for the 10bit or 12bit h.265 profile. You can use mediainfo to check if the video is 10bit, 12bit or not.

[libertyforall]

This is an inaccurate response, as Dolby Vision is dynamic in that it is HDR by frame & 12-bit mastered, and has Video Tracks of the Format dvhe which is Dolby Vision, and that shows up in Subler, but what would indicate and HDR10 version (which is static which is for the full video of frames & 10-bit unlike DV -- not just marketing)?

http://www.dolby.com/us/en/technologies/dolby-vision/dolby-vision-profiles-levels.pdf

This HDR10 file seems to show no track indication that it is HDR10, unlike a Dolby Vision file: http://files.hdrsamples.com/downloads/hdr/Life_of_%20Pi_draft_Ultra-HD_HDR.mp4

[Damiano Galassi]

Dolby documents says it's just h.264 or h.265 with a different bit depth: http://www.dolby.com/us/en/technologies/dolby-vision/dolby-vision-profiles-levels.pdf , nothing magic here. Like I said, use mediainfo and check the bit depth, you can check the matrix coefficients and color primaries too.

[libertyforall]

No, as mentioned there is a dvhe track in the file for Dolby Vision, but I see no indicator of an HDR10 track in the example provided and unsure why. MediaInfo does not tell me the answer I am seeking...

[Damiano Galassi]

I see no dvhe track in the file you provided.

[Damiano Galassi]

But Subler doesn't support those dolby specific extensions to the mp4 file format, so your hope is to use mediainfo or another app.

[libertyforall]

I have a couple HEVC DV files from Vizio I can provide, see screenshot.

https://bitbucket-assetroot.s3.amazonaws.com/repository/9ReoL9/2913657042-Messages%20Image%281574954952%29.jpeg?Signature=AucMwLS4afonHj30G0ke4Wd30XA%3D&Expires=1479934522&AWSAccessKeyId=AKIAIVFPT2YJYYZY3H4A&versionId=h9BvM7aWqKaA6ws3hgMUZMfthNuXhePX

[Damiano Galassi]

I forgot, you have to check in mediainfo the color primaries and the transfer characteristics. Color primaries tells you if the file is using wide gamut or not (Bt.2020 has a wider gamut than Bt.709), transfer characteristics tells you if the file is HDR or not (BT.709 is SDR, and for example SMPTE ST 2084 is HDR)