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BitJazz
SheerVideo FAQ
Formats: Color Spaces

Does SheerVideo support RGB display color?

Does SheerVideo support RGBA compositing display color?

Does SheerVideo support Y'CbCr, Y'PbPr, Yuv, or YIQ video color?

Does SheerVideo support Y'CbCrA, Y'PbPrA, YuvA, or YIQA compositing video color?

SheerVideoDoes SheerVideo support RGB display color?

Yes, SheerVideo supports real-time lossless encoding and decoding of RGB display color: RGB[A] 10bf and RGB[A] 8bf, both progressive and interlaced, at all resolutions and frame rates, on both Mac and Windows.

SheerVideo supports the RGB display-color RGB[A] 10+bf|v pixel formats 'b64a', 'L64A', 'A46L', 'b48r', 'R10k', and r210'; and the RGB display-color RGB[A] 8bf|v pixel formats ARGB, 'ABGR', 'RGBA', 'BGRA', 'RGB ', 'BGR ', and 'VRGB':

RGB[A] 10+bf 'b64a', 'L64A', 'A46L', 'b48r', 'F10k', 'F210'
RGB[A] 8bf ARGB, 'ABGR', 'RGBA', 'BGRA', 'RGB ', 'BGR '
RGB 10bv 'S10k', 'S210'
RGB[A] 8bv 'VRGB'
The RGB display-color format contains three channels:
  • R: Red
  • G: Green
  • B: Blue
where the Red channel indicates how much red light there is, the Green channel how much green light, and the Blue channel how much blue light.

The color display on your computer, your game console, your digital television, and pretty much every other digital color display you might have nowadays all use the RGB pixel format. Analog color displays, such as your old analog television set, also end up lighting RGB phosphors on the CRT screen, even if they don't store or transmit the image in that format. High-end video and digital still cameras and video capture boards capture the image in RGB format too. The reason that the RGB format is so ubiquitous is that it's the closest digital representation we have to how the human eye captures the image.

RGB[A] is also known as the 'raw ' format, corresponding to Apple's None codec, which also refer to monochrome and lower-precision RGB. For lower-precision RGB and monochrome flavors of None, SheerVideo will still encode and decode the video with perfect fidelity, but may not achieve significant compression.

The specific Sheer codec corresponding to RGB display-color RGB[A] 10bf pixel formats is

  • Sheer RGB[A] 10bf
which encodes from and decodes to RGB[A] 10bf pixel formats losslessly in real time. The Sheer RGB[A] 8bf codec also encodes from and decodes to RGB[A] 10bf pixel formats in real time, but only to 8 bits of precision. The Sheer Y'CbCr[A] 10bv 4:4:4[:4], Sheer Y'CbCr[A] 8bv 4:4:4[:4], Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to RGB[A] 10bf pixel formats, but not losslessly, and not always in real time. The generic Sheer codec encodes RGB[A] 10bf pixel formats as Sheer RGB[A] 10bf.

The specific Sheer codec corresponding to RGB display-color RGB[A] 8bf pixel formats is

  • Sheer RGB[A] 8bf
which encodes from and decodes to RGB[A] 8bf pixel formats losslessly in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes to RGB[A] 8bf pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to RGB[A] 8bf pixel formats losslessly using Synchromy, though not always in real time. The Sheer Y'CbCr[A] 8bv 4:4:4[:4], Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to RGB[A] 8bf pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes RGB[A] 8bf pixel formats as Sheer RGB[A] 8bf.

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SheerVideoDoes SheerVideo support RGBA compositing display color?

Yes, SheerVideo supports real-time lossless encoding and decoding of RGBA compositing display color: RGBA 10bf and RGBA 8bf, both progressive and interlaced, at all resolutions and frame rates, on both Mac and Windows.

SheerVideo supports the RGBA compositing display-color RGBA 10+bf pixel formats 'b64a', 'L64A', 'A46L'; and the RGBA compositing display-color RGBA 8b pixel formats ARGB, 'ABGR', 'RGBA', and 'BGRA'.

RGB[A] 10+bf 'b64a', 'L64A', 'A46L'
RGB[A] 8bf ARGB, 'ABGR', 'RGBA', 'BGRA'
RGB[A] 8bv 'VRGB'

To include the alpha channel in a Sheer encoding, be sure to choose the appropriate item in the Depth pop-up menu in the Compression Settings dialog:

  • Millions of Colors: ignore alpha
  • Millions of Colors+: store alpha
Note that the QuickTime Compression Settings dialog incorrectly says "Millions" of Colors, instead of "Billions" (or "Milliards") of Colors for 10-bit color formats or "Quintillions" of Colors for 16-bit color formats, even though QuickTime correctly supplies the full 10-bit or 16-bit precision required by the codec.

The RGBA compositing display-color format contains four channels:

  • R: Red
  • G: Green
  • B: Blue
  • A: Alpha

The RGBA compositing display-color format is identical to the RGB display-color format with the addition of an alpha channel. The Red, Green, and Blue channels indicate how much red light, green light, and blue light there is. Alpha represents the coverage or opacity of the pixel, which is used during compositing. When composited over a background image, a transparent foreground pixel lets only the background show through, while an opaque foreground pixel shows only the foreground, and anything in between shows a mixture of foreground and background.

The specific Sheer codec corresponding to RGBA compositing display-color RGBA 10bf pixel formats is

  • Sheer RGB[A] 10bf
which encodes from and decodes to RGB[A] 10bf pixel formats losslessly in real time. The Sheer RGB[A] 8bf codec also encodes from and decodes to RGB[A] 10bf pixel formats in real time, but only to 8 bits of precision. The Sheer Y'CbCr[A] 10bv 4:4:4[:4], Sheer Y'CbCr[A] 8bv 4:4:4[:4], Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to RGB[A] 10bf pixel formats, but not losslessly, and not always in real time. The generic Sheer codec encodes RGB[A] 10bf pixel formats as Sheer RGB[A] 10bf.

The specific Sheer codec corresponding to RGBA compositing display-color RGBA 8bf pixel formats is

  • Sheer RGB[A] 8bf
which encodes from and decodes to RGB[A] 8bf pixel formats losslessly in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes to RGB[A] 10bf pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to RGB[A] 8bf pixel formats losslessly using Synchromy, though not always in real time. The Sheer Y'CbCr[A] 8bv 4:4:4[:4], Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to RGB[A] 8bf pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes RGB[A] 8bf pixel formats as Sheer RGB[A] 8bf.

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SheerVideoDoes SheerVideo support Y'CbCr, Y'PbPr, Yuv, or YIQ video color?

Yes, SheerVideo supports real-time lossless encoding and decoding of Y'CBCR and Y'PBPR video color, both of which are loosely referred to by the analog term YUV, which is easier to write and pronounce: Y'CbCr[A] 10bv 4:4:4[:4], Y'CbCr[A] 8bv 4:4:4[:4], Y'CbCr[A] 8bu 4:4:4[:4], Y'CbCr[A] 10bv 4:2:2[:4], Y'CbCr[A] 8bv 4:2:2[:4], and Sheer Y'CbCr 8bw 4:2:2, both progressive and interlaced, at all resolutions and frame rates, on both Mac and Windows.

SheerVideo uses the same codecs for both Y'CBCR and Y'PBPR, distinguishing them with different Sheer Option settings, and the documentation refers to both with the cover term Y'CbCr, in spite of the technical distinction.

SheerVideo supports the Y'CbCr video-color Y'CbCr[A] 10+bu|v 4:4:4[:4] pixel formats 'r4fl', 'V416' and 'v410'; the Y'CbCr video-color Y'CbCrA 8bu|v 4:4:4:4 pixel formats 'r408', 'v408', and 'VUYA'; the Y'CbCr video-color Y'CbCr[A] 10+bv 4:2:2[:4] pixel formats 'v210', 'v216', and 'Y216'; the Y'CbCr video-color Y'CbCr[A] 8bv 4:2:2[:4] pixel formats '2vuy', 'yuvs', and 'UYVY'; and the Y'CbCr video-color Y'CbCr 8bw 4:2:2 pixel format 'yuvu' or 'yuv2':

Y'CbCr[A] 10+bv 4:4:4[:4] 'V416', 'v410'
Y'CbCr[A] 8bv 4:4:4[:4] 'v408', 'VUYA'
Y'CbCr[A] 10+bu 4:4:4[:4] 'r4fl'
Y'CbCr[A] 8bu 4:4:4[:4] 'r408'
Y'CbCr[A] 10+bv 4:2:2[:4] 'v210', 'v216', 'Y216'
Y'CbCr[A] 8bv 4:2:2[:4] '2vuy', 'yuvs', 'UYVY'
Y'CbCr 8bw 4:2:2 'yuvu', 'yuv2'

To distinguish between Y'CbCr and Y'PbPr color spaces when encoding with SheerVideo, choose the appropriate video standard in the Sheer Settings dialog:

  • ITU-R BT.601-4 (Y'CbCr)
  • ITU-R BT.709-2 (Y'PbPr)

The Y'CbCr video-color (SD) and Y'PbPr video-color (HD) color spaces are digital television color spaces designed largely for backward compatibility with the analog color spaces YIQ (NTSC) and YUV (PAL and SECAM), which were in turn developed for backward compatibility with monochrome television. These color spaces are highly unintuitive, consisting of three components:

  • Y': Luma
  • Cb: Blue-Yellow Chroma
  • Cr: Red-Cyan Chroma
where luma (Y') is a measure of the brightness of the color, blue-yellow chroma (Cb) is an opponent-color axis ranging from blue to yellow, and red-cyan chroma (Cr) is an opponent-color axis ranging from red to cyan.

The Y' (luma) color channel, being equal to the monochrome brightness, can be used to drive a monochrome television display. The two chroma channels, u and v or I and Q, were chosen to be orthogonal to the brightness and to each other, in order to minimize the bandwidth required to transmit them. The I axis ranges from orange to blue, and Q ranges from purple to green, while the u axis ranges from yellow to blue, and v ranges from cyan to yellow. These analog chroma channels are approximated by CB and CR in standard-definition digital video, and by PB and PR in high-definition video. These digital components, which are not quite orthogonal, constitute a compromise between computational convenience and matching their analog counterparts.

The specific Sheer codec corresponding to Y'CbCr[A] video-color Y'CbCr[A] 10bv 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 10bv 4:4:4[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec also encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats in real time, but only to 8 bits of precision. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats, but not losslessly, and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 10bv 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 10bv 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCr[A] video-color Y'CbCr[A] 8bv 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bv 4:4:4[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes back to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats losslessly (except for out-of-range colors) using Synchromy, though not always in real time. The Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 8bv 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 8bv 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCr[A] video-color Y'CbCr[A] 8bu 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bu 4:4:4[:4]
an unbiassed variant of the Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec, which encodes from and decodes to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to this pixel format losslessly (except for out-of-range colors) in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats losslessly (except for out-of-range colors) using Synchromy, but not always in real time. The Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats, but not losslessly and not always in real time. The generic Sheer codec and the Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec encode Y'CbCr[A] 8bu 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 8bu 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCr[A] video-color Y'CbCr[A] 10bv 4:2:2[:4] pixel formats is

  • Sheer Y'CbCr[A] 10bv 4:2:2[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 8bv 4:2:2[:4] codec also encodes from and decodes to Y'CbCr[A] 10bv 4:2:2[:4] pixel formats in real time, but only to 8 bits of precision. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:4:4[:4], and Sheer Y'CbCr[A] 8bv 4:4:4[:4] codecs also encode from and decode to Y'CbCr[A] 10bv 4:2:2[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 10bv 4:2:2[:4] pixel formats as Sheer Y'CbCr[A] 10bv 4:2:2[:4].

The specific Sheer codec corresponding to Y'CbCr[A] video-color Y'CbCr[A] 8bv 4:2:2[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bv 4:2:2[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:2:2[:4] codec also encodes Y'CbCr[A] 8bv 4:2:2[:4] pixel formats losslessly in real time. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:4:4[:4], and Sheer Y'CbCr[A] 8bv 4:4:4[:4] codecs also encode from and decode to Y'CbCr[A] 8bv 4:2:2[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 8bv 4:2:2[:4] pixel formats as Sheer Y'CbCr[A] 8bv 4:2:2[:4].

The specific Sheer codec corresponding to Y'CbCr video-color Y'CbCr 8bw 4:2:2 is

  • Sheer Y'CbCr 8bw 4:2:2
which encodes from and decodes to Y'CbCr 8bw 4:2:2 pixel formats losslessly in real time. This is an obsolete format not supported by the other specific Sheer codecs. The generic Sheer codec encodes Y'CbCr 8bw 4:2:2 as Sheer Y'CbCr 8bw 4:2:2.

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SheerVideoDoes SheerVideo support Y'CbCrA, Y'PbPrA, YuvA, or YIQA compositing video color?

Yes, SheerVideo supports real-time lossless encoding and decoding of Y'CBCRA and Y'PBPRA compositing video color, both of which are loosely referred to by the analog term YUVA, which is easier to write and pronounce: Y'CbCrA 10bv 4:4:4:4, Y'CbCrA 8bv 4:4:4:4, Y'CbCrA 8bu 4:4:4:4, Y'CbCrA 10bv 4:2:2:4, and Y'CbCrA 8bv 4:2:2:4, both progressive and interlaced, at all resolutions and frame rates, on both Mac and Windows.

SheerVideo uses the same codecs for both Y'CBCRA and Y'PBPRA, distinguishing them with different Sheer Option settings, and the documentation refers to both with the cover term Y'CbCrA, in spite of the technical distinction.

SheerVideo supports the Y'CbCrA compositing video-color Y'CbCrA 10+bu|v 4:4:4:4 pixel formats 'r4fl' and 'V416'; and the Y'CbCrA compositing video-color Y'CbCrA 8bu|v 4:4:4:4 pixel formats 'r408', 'v408', and 'VUYA'. QuickTime does not currently define any Y'CbCrA compositing video-color Y'CbCrA 10bv 4:4:4:4, Y'CbCrA 10bv 4:2:2:4, or Y'CbCrA 10bv 4:2:2:4 pixel formats.

Y'CbCr[A] 10+bv 4:4:4[:4] 'V416', 'v410'
Y'CbCr[A] 8bv 4:4:4[:4] 'v408', 'VUYA'
Y'CbCr[A] 10+bu 4:4:4[:4] 'r4fl'
Y'CbCr[A] 8bu 4:4:4[:4] 'r408'
Y'CbCr[A] 10bv 4:2:2[:4] -
Y'CbCr[A] 8bv 4:2:2[:4] -

To distinguish between Y'CbCr and Y'PbPr color spaces when encoding with SheerVideo, choose the appropriate video standard in the Sheer Settings dialog:

  • ITU-R BT.601-4 (Y'CbCr)
  • ITU-R BT.709-2 (Y'PbPr)

The Y'CbCrA compositing video-color format contains four channels:

  • Y': Luma
  • Cb: Blue-Yellow Chroma
  • Cr: Red-Cyan Chroma
  • A: Alpha

The Y'CbCrA compositing video-color format is identical to the Y'CbCr video-color format with the addition of an alpha channel. The Y', Cb, and Cr channels indicate how much brightness, yellow versus blue light, and cyan versus red light there is. Alpha represents the coverage or opacity of the pixel, which is used during compositing. When composited over a background image, a transparent foreground pixel lets only the background show through, while an opaque foreground pixel shows only the foreground, and anything in between shows a mixture of foreground and background.

The specific Sheer codec corresponding to Y'CbCrA compositing video-color Y'CbCr[A] 10bv 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 10bv 4:4:4[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec also encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats in real time, but only to 8 bits of precision. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats, but not losslessly, and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 10bv 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 10bv 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCrA compositing video-color Y'CbCr[A] 8bv 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bv 4:4:4[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes back to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats losslessly (except for out-of-range colors) using Synchromy, though not always in real time. The Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 8bv 4:4:4[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 8bv 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 8bv 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCrA compositing video-color Y'CbCr[A] 8bu 4:4:4[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bu 4:4:4[:4]
an unbiassed variant of the Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec, which encodes from and decodes to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:4:4[:4] codec also encodes from and decodes to this pixel format losslessly (except for out-of-range colors) in real time. The Sheer RGB[A] 10bf codec also encodes from and decodes to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats losslessly (except for out-of-range colors) using Synchromy, but not always in real time. The Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:2:2[:4], and Sheer Y'CbCr[A] 8bv 4:2:2[:4] codecs also encode from and decode to Y'CbCr[A] 8bu 4:4:4[:4] pixel formats, but not losslessly and not always in real time. The generic Sheer codec and the Sheer Y'CbCr[A] 8bv 4:4:4[:4] codec encode Y'CbCr[A] 8bu 4:4:4[:4] pixel formats as Sheer Y'CbCr[A] 8bu 4:4:4[:4].

The specific Sheer codec corresponding to Y'CbCrA compositing video-color Y'CbCr[A] 10bv 4:2:2[:4] pixel formats is

  • Sheer Y'CbCr[A] 10bv 4:2:2[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 8bv 4:2:2[:4] codec also encodes from and decodes to Y'CbCr[A] 10bv 4:2:2[:4] pixel formats in real time, but only to 8 bits of precision. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:4:4[:4], and Sheer Y'CbCr[A] 8bv 4:4:4[:4] codecs also encode from and decode to Y'CbCr[A] 10bv 4:2:2[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 10bv 4:2:2[:4] pixel formats as Sheer Y'CbCr[A] 10bv 4:2:2[:4].

The specific Sheer codec corresponding to Y'CbCrA compositing video-color Y'CbCr[A] 8bv 4:2:2[:4] pixel formats is

  • Sheer Y'CbCr[A] 8bv 4:2:2[:4]
which encodes from and decodes to Y'CbCr[A] 10bv 4:4:4[:4] pixel formats losslessly in real time. The Sheer Y'CbCr[A] 10bv 4:2:2[:4] codec also encodes Y'CbCr[A] 8bv 4:2:2[:4] pixel formats losslessly in real time. The Sheer RGB[A] 10bf, Sheer RGB[A] 8bf, Sheer Y'CbCr[A] 10bv 4:4:4[:4], and Sheer Y'CbCr[A] 8bv 4:4:4[:4] codecs also encode from and decode to Y'CbCr[A] 8bv 4:2:2[:4] pixel formats, though not losslessly and not always in real time. The generic Sheer codec encodes Y'CbCr[A] 8bv 4:2:2[:4] pixel formats as Sheer Y'CbCr[A] 8bv 4:2:2[:4].

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