PIX FMT YUYV422: Difference between revisions
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PIX_FMT_YUYV422 refers to data stored as Y' Cb' Cr'. The original stream has been [[subsampled]] so that for every 2 [[luminance]] (Y') values, there is one [[chrominance]] value. The human eye is more sensitive to luminance than chrominance, so the loss of chrominance samples does not have a significant impact on picture quality. | PIX_FMT_YUYV422 refers to data stored as Y' Cb' Cr'. The original stream has been [[subsampling|subsampled]] so that for every 2 [[luminance]] (Y') values, there is one [[chrominance]] value. The human eye is more sensitive to luminance than chrominance, so the loss of chrominance samples does not have a significant impact on picture quality. | ||
An example stream containing 4 pixels: | An example stream containing 4 pixels: | ||
Latest revision as of 02:31, 4 June 2007
PIX_FMT_YUYV422 refers to data stored as Y' Cb' Cr'. The original stream has been subsampled so that for every 2 luminance (Y') values, there is one chrominance value. The human eye is more sensitive to luminance than chrominance, so the loss of chrominance samples does not have a significant impact on picture quality.
An example stream containing 4 pixels:
Y' Cb Y' Cr Y' Cb Y' Cr. __ @@ __ ** __ @@ __ **.
This stream contains:
- 4 Luminance values (Y').
- 2 Chrominance blue values (Cb).
- 2 Chrominance red values (Cr).
4 pixels are stored as 8 bytes.