The Chroma Subsampling method for Dolby Vision Profile 5 video is: "ICtCp"

[Lang45]

The Chroma Subsampling method for Dolby Vision Profile 5 video is: "ICtCp", and the display of the software error is: "YUV"

[JeromeMartinez]

"ICtCp" is not something listed in the "ColorSpace" field, but in the "matrix_coefficients" fields, isn't it the case?
If not, please share a sample file so we can check why "matrix_coefficients" field is not correct.
"ColorSpace" field name is controversy but we don't want to break compatibility by changing this historical choice to another name, it would break third party software without a lot of added value.

[cjee21]

Dolby Vision Profile 5 uses IPT-PQ-C2 (matrix_coefficients 15) but is not indicated anywhere in MediaInfo (Usual colour primaries/matrix/transfer fields are missing, colour range full is there and correct).

Reference (see 2.1.1 Notes to profiles): https://professionalsupport.dolby.com/s/article/What-is-Dolby-Vision-Profile

Sample: https://media.developer.dolby.com/DolbyVision_Atmos/mp4/iOS_P5_GlassBlowing2_3840x2160%4059.94fps_15200kbps.mp4

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PS. Dolby Vision 2 coming soon
https://news.dolby.com/en-WW/253671-dolby-unveils-dolby-vision-2-a-new-era-for-tv-picture-quality/