Samsung Galaxy HDR10+ video recording

Paul Anderegg

Active Member
I have done some testing shooting HDR10+, and same scenes in SDR. In FCPX, the HDR10+ files read as rec.709, you must force PQ to get them to show in HDR10.

In visual scene testing of highlights, the SDR and HDR10+ footage clip the highlights exactly the same, there is no additional dynamic range to be had. In cross converion, HDR10 clips to SDR, and SDR clips to HDR10, the results contained the same highlight and shadow detail, you cannot tell any differences.

Of interest was the Media Info read of the file metadata, which appears to simply show a rec.709 video clip contained inside an st.2094 HDR10+ container. Also, all HDR10+ clips, whether they be overexposed, or just shot as black nothingness, displayed the exact same HDR metadata, MaxFALL, MaxCLL etc. The + in HDR10+ means there is dynamic metadata that changes from scene to scene. The files do not contain any changes to scene metadata, even when the scenes contain wildly different lighting. Basically, in a nutshell, Samsung phone HDR10+ is a compete and total fabrication. They shoudl repackage it as an after effect as they currently include the HDR to SDR converter, since that makes more sense.

Video
ID : 1
Format : HEVC
Format/Info : High Efficiency Video Coding
Format profile : Main [email protected]@Main
HDR format : SMPTE ST 2094 App 4, Version 1, HDR10 compatible
Codec ID : hvc1
Codec ID/Info : High Efficiency Video Coding
Duration : 50 s 400 ms
Bit rate : 50.5 Mb/s
Width : 3 840 pixels
Height : 2 160 pixels
Display aspect ratio : 16:9
Frame rate mode : Variable
Frame rate : 29.970 (29970/1000) FPS
Minimum frame rate : 10.029 FPS
Maximum frame rate : 40.197 FPS

Standard : NTSC
Color space : YUV
Chroma subsampling : 4:2:0
Bit depth : 10 bits
Bits/(Pixel*Frame) : 0.203
Stream size : 303 MiB (99%)
Title : VideoHandle
Language : English
Encoded date : UTC 2020-12-25 02:20:03
Tagged date : UTC 2020-12-25 02:20:03
Color range : Limited
Color primaries : BT.709
colour_primaries_Original : BT.2020
Transfer characteristics : BT.709
transfer_characteristics_Original : PQ
Matrix coefficients : BT.709
matrix_coefficients_Original : BT.2020 non-constant
Mastering display color primaries : Display P3
Mastering display luminance : min: 0.0050 cd/m2, max: 1000 cd/m2
Maximum Content Light Level : 1000 cd/m2
Maximum Frame-Average Light Level : 200 cd/m2
Codec configuration box : hvcC

 

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