The documentation for
%ituneshdvideo% is outdated.
|Name in Mp3tag||MP4||iTunes|
||Boolean flag for HD video (0/1)|
It actually expects an integer and its valid values currently are:
0for standard definition (SD) video, usually with 480 or 576 lines and a 4:3 or 16:9 display aspect ratio
1for high definition (HD) video with 720 lines and 1280 pixels per line
2for high definition (“Full” HD) video with 1080 lines and 1920 pixels per line (2K)
3for ultra high definition (UHD) video with 2160 lines and 3840 pixels per line (4K)
The support for
3 is apparently still buggy, even in Apple software.