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  https://dataswamp.org/~incal/#mpv         https://dataswamp.org/~incal/FILM
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1080i       = 1080p only _i_nterlaced scan
1080p       1920x1080, progressive scan
10bit       10 bits for each RGB channel
1600x1200   = SDTV, 4:3 version of 1080p
1904x784    ?
1920x1080   = 1080p
1920x800    = 1080p ~
1920x804    = 1080p ~
2160p       3840x2160, 4K 16:9 Ultra HDTV (UHDTV or UHD)
3840x1608   = 2160p ~
3840x2026   = 2160p ~
3840x2160   = 2160p
4160x3120   13 megapixel smartphone camera
4320p       7680x4320 8K 16:9 Ultra HD (8K UHD)
4K          = 2160p
640x480     4:3 or 1-1/3
7.1         L R C LFE Ls Rs Lb Rb + LFE/subwoofer, 7 + 1 = 8 channels
720p        1280x720 16:9 HDTV (HD)
8K          = 4320p
AAC         Advanced Audio Coding
AR          aspect ratio
Atmos       Dolby Atmos, meta layer for consumer over 7.1
BluRay      Blu-ray
BRrip       Blu-ray
DTS-HD MA   Digital Theater Systems HD Master Audio AKA Blu-ray surround
FHD         = 1080p (also 15.6" laptops [1])
FHDTV       = 1080p
HD          = 720p
HDTV        = 720p
SDR         Standard Dynamic Range
SDTV        standard-definition television (not high resolution)
TrueHD      Dolby TrueHD 7.1, Blu-ray lossless multi-channel codec
UHD         = 2160p
UHDTV       = 2160p
x264        H.264/MPEG-4 AVC, VideoLAN
x265        HEVC/H.265 ISO/IEC MPEG ITU-T VCEG

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  aspect           ratio     note
  -----------------------------------------------------
  (//    4    3)   1.33(3)   4:3
  (//  640  480)   ..
  (// 1600 1200)             SDTV, 4:3 version of 1080p

  (//   16    9)   1.77(7)   widescreen, 16:9
  (// 1280  720)   ..
  (// 1920 1080)
  (// 3840 2160)
  (// 7680 4320)

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[1] 15.6" ~= 396 mm. sides: 345x194 (13.6x7.6")
    $ units -d 3 -t '15.6 inch' mm # 396
    $ units -d 3 -t '13.6 inch' mm # 193
    $ echo $(( 345 / 194.0 ))      # 1.778
    $ echo $((  16 /   9.0 ))      # 1.788
    (insert (format " ; %.0f" (hypotenuse 345 194))) ; 396

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  https://dataswamp.org/~incal/data/MM                     moasenwood@zoho.eu
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