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Convert YCbCr 4:2:2 pixel stream to video frame

Since R2019a

  • HDMI Tx block

SoC Blockset Support Package for Xilinx Devices / Video


The HDMI Tx block converts a pixel stream in YCbCr 4:2:2 format to raw video data for display during simulation. It can return data in pixel stream mode for hardware algorithm design or in frame mode for faster simulation. When you include this block in your design, the SoC Builder tool generates all the IP blocks necessary to transmit video data to the FMC-HDMI-CAM card attached to your hardware board. None of the block parameters affect hardware behavior.

You must have Computer Vision Toolbox™ to use this block.



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Single YCbCr 4:2:2 pixel in pixel stream, specified as a scalar in concatenated YCbCr 4:2:2 format, where

  • bits [1:8] represent Y.

  • bits [9:16] represent Cb or Cr, interleaved in time.

Data Types: uint16

Control signals accompanying input pixel stream, specified as a pixelcontrol (Vision HDL Toolbox) bus. The bus contains five Boolean signals indicating the validity of a pixel and its location within a frame.

When the Input mode parameter is Frame, the block sets all five signals in the pixelcontrol bus to true to indicate when the output data is valid.

Data Types: bus


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Output frame data, returned as a vector in the YCbCr 4:2:2 format.


To enable this port, select the Frame output parameter.

Data Types: uint8

Control signal accompanying output frame data, returned as a scalar.

This port is a control signal that indicates when the frame output port is valid. The block sets this value to 1 when the data is available on the frame output port.


To enable this port, select the Frame output parameter.

Data Types: Boolean


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Select the video frame size as one of these values:

  • 480p SDTV (720x480p)

  • 576p SDTV (720x576p)

  • 720p HDTV (1280x720p)

  • 1080p HDTV (1920x1080p)

  • 160x120p

  • 320x240p

  • 640x480p

  • 800x600p

  • 1024x768p

  • 1280x768p

  • 1280x1024p

  • 1360x768p

  • 1366x768p

  • 1400x1050p

  • 1600x1200p

  • 1680x1050p

  • 1920x1200p

Specify whether the input is streamed one pixel per clock cycle or one frame per clock. Pixel mode better represents the hardware algorithm and is recommended for FPGA deployment. Frame mode enables faster simulation.

Select this parameter to enable a To Video Display (Computer Vision Toolbox) block to display the output frame during simulation.

Select this parameter to enable the output ports frame and valid. Using these ports, you can access video frame data from this block and export it to any file or a workspace variable.

Extended Capabilities

Version History

Introduced in R2019a

See Also