# Multistream
The **gst-multi-stream-example** application allows you to access several streams from a single camera and either display them simultaneously on a screen or save them in MP4 format.
For example, you can use this application for a camera security system where the video is captured from a camera. This video can be simultaneously streamed over a network, displayed on a monitor, and archived for future review.
The figure shows the pipeline, which is run with flags to specify width, height, stream count, and output file.
For more information, see [Pipeline flow](https://docs.qualcomm.com/doc/80-80021-50/topic/gst-multi-stream-example.html#section-erp-x1y-nbc).
**Figure : gst-multi-stream-example pipeline**
## Run the application
1. Ensure that you complete the [Prerequisites](https://docs.qualcomm.com/doc/80-80021-50/topic/mm_sample_apps_prerequisites.html).
2. In the terminal of the target device, run the use case:
gst-multi-stream-example -w 1920 -h 1080 -n 2
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3. To stop the use case, use **CTRL + C**.
4. In the terminal of the target device, run the following command in the SSH shell to display the available help options:
gst-multi-stream-example --help
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5. In the terminal of the host computer, run the following command to pull the files from the target device:
scp root@:/etc/media/
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## Expected output
The output streams are displayed simultaneously on the screen or saved to a file.
**Figure : Expected output for gst-multi-stream-example application - Preview**
## Pipeline flow
The following table lists the plugins used in the multistream pipeline:
| **Plugin** | **Description** |
| --- | --- |
| [qtiqmmfsrc](https://docs.qualcomm.com/doc/80-80021-50/topic/qtiqmmfsrc.html) | Captures the video stream and feeds it into the capsfilter. |
| Capsfilter | Branches the source into two separate pipelines. In one pipeline, the output is sent to [Waylandsink](https://docs.qualcomm.com/doc/80-80021-50/topic/waylandsink.html) for display. |
| Capsfilter |
In the other pipeline, the video undergoes the following:
|
| | |
## Known issues
- The default bit rate for the encoded video is configured to a low setting, leading to reduced quality at higher resolutions.
- The application may not work due to v4l2h264enc encoder issue.
Last Published: Mar 26, 2026
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