RTSP Video Stream Transmit

R2026b

Stream video to network over real-time streaming protocol

Since R2024a

• 

RTSP Video Stream Transmit block

To add a block to a model, double-click the canvas and start typing the block name. Then, select the block from the list.

Libraries:
Raspberry Pi Blockset / Audio and Video

Description

Use the RTSP Video Stream Transmit block to stream video to network over real-time streaming protocol (RTSP). You can stream grayscale, RGB, or YCbCr video over a network and view it on devices connected to the same network. You can also encode the video stream using the H264 or JPEG standards.

Note

To generate C/C++ code for this block, you must have an Embedded Coder^® license.

When using this block in a Simulink^® model, use a minimum of 256 MB of Raspberry Pi^® GPU memory to avoid any deterioration in the video feed using the RTSP protocol.

Examples

Stream Video over Network Using Raspberry Pi RTSP Video Stream Transmit Block

Use the RTSP Video Stream Transmit block from Raspberry Pi® Blockset to stream a live video over a network using real-time streaming protocol (RTSP).

• Open Model

Receive Video over Network Using Raspberry Pi RTSP Video Stream Receive Block

Use the RTSP Video Stream Receive block from the Raspberry Pi® Blockset to receive a live video over a network using real-time streaming protocol (RTSP).

• Open Model

Ports

Input

R — Red component of input video

matrix

Red channel signal of the RGB video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the red component.

Dependencies

To enable this port, set Input image format to RGB.

Data Types: uint8

G — Green component of input video

matrix

Green channel signal of the RGB video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the green component.

Dependencies

To enable this port, set Input image format to RGB.

Data Types: uint8

B — Blue component of input video

matrix

Blue channel signal of the RGB video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the blue component.

Dependencies

To enable this port, set Input image format to RGB.

Data Types: uint8

Y — Luma component of input video

matrix

Luminance component of the input video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the luminance component.

Dependencies

To enable this port, set Input image format to YCbCr 4:2:2.

Data Types: uint8

Cb — Blue difference chroma component of input video

matrix

Blue difference chroma component of the input video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the blue difference chroma component.

Dependencies

To enable this port, set Input image format to YCbCr 4:2:2.

Data Types: uint8

Cr — Red difference chroma component of input video

matrix

Red difference chroma component of the input video to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the red difference chroma component.

Dependencies

To enable this port, set Input image format to YCbCr 4:2:2.

Data Types: uint8

I — Grayscale input video

matrix

Grayscale input video signal to stream, specified as an M-by-N grid of pixels. Here, M is the number of rows and N is the number of columns for the grayscale input video.

Dependencies

To enable this port, set Input image format to Grayscale.

Data Types: uint8

Parameters

Video parameters

Input image format — Input video stream format

RGB (default) | YCbCr 4:2:2 | Grayscale

Specify the format of the input video stream.

Tip

To view a color video on your device, set this parameter to YCbCr 4:2:2. Because this format requires less bandwidth, you can stream the video without significantly affecting the video quality.

Output resolution — Image resolution

Specify (default) | Inherit from input image

Select the output image resolution.

• Specify — Manually specify the input image resolution in the Image size ([width, height]) parameter. Using this option, you can either increase or decrease the resolution of the output video stream. When you specify a higher resolution, the execution speed of a Simulink model decreases.

• Inherit from input image — The block inherits the resolution of the input image.

Image size ([width, height]) — Image resolution

[640, 480] (default) | [width, height]

Specify the resolution of the input image, in pixels.

Dependencies

To enable this parameter, set Output resolution to Specify.

Video stream encoding — Encoding format for video stream

H264 (default) | JPEG

Select the encoding format for the real-time streaming protocol (RTSP) video stream.

Frame rate (in fps) — Frame rate of input video

24 (default) | positive integer

Specify the frame rate of the input video signal, in frames per second.

RTSP stream connection parameters

Port number — Port on Raspberry Pi board to stream video

8554 (default) | positive integer in the range [1,65535]

Specify the Raspberry Pi hardware port number from which you want to stream the video.

Mount point — Video identifier

stream01 (default) | char | string

Specify a unique identifier to create an RTSP URL for a video stream.

Programmatic Use: Add Block

To add the block programmatically, use the add_block function with one of these library block paths as the source.

"raspberrypiAVlib/RTSP Video Stream Transmit"

Example: add_block("raspberrypiAVlib/RTSP Video Stream Transmit","myModel/myBlock",MakeNameUnique="on")

Extended Capabilities

C/C++ Code Generation

Generate C and C++ code using Simulink® Coder™.

To generate C/C++ code for this block, you must have an Embedded Coder license. For more information on selecting the right product stack according to your development goals, see Product Stack for Raspberry Pi Blockset.

Version History

Introduced in R2024a