type t = [
  | `None
  | `Yuv420p
  | `Yuyv422
  | `Rgb24
  | `Bgr24
  | `Yuv422p
  | `Yuv444p
  | `Yuv410p
  | `Yuv411p
  | `Gray8
  | `Monowhite
  | `Monoblack
  | `Pal8
  | `Yuvj420p
  | `Yuvj422p
  | `Yuvj444p
  | `Uyvy422
  | `Uyyvyy411
  | `Bgr8
  | `Bgr4
  | `Bgr4_byte
  | `Rgb8
  | `Rgb4
  | `Rgb4_byte
  | `Nv12
  | `Nv21
  | `Argb
  | `Rgba
  | `Abgr
  | `Bgra
  | `Gray16be
  | `Gray16le
  | `Yuv440p
  | `Yuvj440p
  | `Yuva420p
  | `Rgb48be
  | `Rgb48le
  | `Rgb565be
  | `Rgb565le
  | `Rgb555be
  | `Rgb555le
  | `Bgr565be
  | `Bgr565le
  | `Bgr555be
  | `Bgr555le
  | `Vaapi_moco
  | `Vaapi_idct
  | `Vaapi_vld
  | `Vaapi
  | `Vaapi_
  | `Yuv420p16le
  | `Yuv420p16be
  | `Yuv422p16le
  | `Yuv422p16be
  | `Yuv444p16le
  | `Yuv444p16be
  | `Dxva2_vld
  | `Rgb444le
  | `Rgb444be
  | `Bgr444le
  | `Bgr444be
  | `Ya8
  | `Y400a
  | `Gray8a
  | `Bgr48be
  | `Bgr48le
  | `Yuv420p9be
  | `Yuv420p9le
  | `Yuv420p10be
  | `Yuv420p10le
  | `Yuv422p10be
  | `Yuv422p10le
  | `Yuv444p9be
  | `Yuv444p9le
  | `Yuv444p10be
  | `Yuv444p10le
  | `Yuv422p9be
  | `Yuv422p9le
  | `Gbrp
  | `Gbr24p
  | `Gbrp9be
  | `Gbrp9le
  | `Gbrp10be
  | `Gbrp10le
  | `Gbrp16be
  | `Gbrp16le
  | `Yuva422p
  | `Yuva444p
  | `Yuva420p9be
  | `Yuva420p9le
  | `Yuva422p9be
  | `Yuva422p9le
  | `Yuva444p9be
  | `Yuva444p9le
  | `Yuva420p10be
  | `Yuva420p10le
  | `Yuva422p10be
  | `Yuva422p10le
  | `Yuva444p10be
  | `Yuva444p10le
  | `Yuva420p16be
  | `Yuva420p16le
  | `Yuva422p16be
  | `Yuva422p16le
  | `Yuva444p16be
  | `Yuva444p16le
  | `Vdpau
  | `Xyz12le
  | `Xyz12be
  | `Nv16
  | `Nv20le
  | `Nv20be
  | `Rgba64be
  | `Rgba64le
  | `Bgra64be
  | `Bgra64le
  | `Yvyu422
  | `Ya16be
  | `Ya16le
  | `Gbrap
  | `Gbrap16be
  | `Gbrap16le
  | `Qsv
  | `Mmal
  | `D3d11va_vld
  | `Cuda
  | `_0rgb
  | `Rgb0
  | `_0bgr
  | `Bgr0
  | `Yuv420p12be
  | `Yuv420p12le
  | `Yuv420p14be
  | `Yuv420p14le
  | `Yuv422p12be
  | `Yuv422p12le
  | `Yuv422p14be
  | `Yuv422p14le
  | `Yuv444p12be
  | `Yuv444p12le
  | `Yuv444p14be
  | `Yuv444p14le
  | `Gbrp12be
  | `Gbrp12le
  | `Gbrp14be
  | `Gbrp14le
  | `Yuvj411p
  | `Bayer_bggr8
  | `Bayer_rggb8
  | `Bayer_gbrg8
  | `Bayer_grbg8
  | `Bayer_bggr16le
  | `Bayer_bggr16be
  | `Bayer_rggb16le
  | `Bayer_rggb16be
  | `Bayer_gbrg16le
  | `Bayer_gbrg16be
  | `Bayer_grbg16le
  | `Bayer_grbg16be
  | `Xvmc
  | `Yuv440p10le
  | `Yuv440p10be
  | `Yuv440p12le
  | `Yuv440p12be
  | `Ayuv64le
  | `Ayuv64be
  | `Videotoolbox
  | `P010le
  | `P010be
  | `Gbrap12be
  | `Gbrap12le
  | `Gbrap10be
  | `Gbrap10le
  | `Mediacodec
  | `Gray12be
  | `Gray12le
  | `Gray10be
  | `Gray10le
  | `P016le
  | `P016be
  | `D3d11
  | `Gray9be
  | `Gray9le
  | `Gbrpf32be
  | `Gbrpf32le
  | `Gbrapf32be
  | `Gbrapf32le
]

