# Multi-camera streaming using Python
Source: [https://docs.qualcomm.com/doc/80-70022-50/topic/multi-camera-streaming-python-sample-app.html](https://docs.qualcomm.com/doc/80-70022-50/topic/multi-camera-streaming-python-sample-app.html)
The **gst-multi-camera-stream-example.py** application allows you to stream from two
camera sensors simultaneously. The application composes the camera feeds side by side to
display on a screen or encodes and stores the video streams to files.
Figure : gst-multi-camera-example.py pipeline
For information about the plugins used in this pipeline, see [Pipeline flow](https://docs.qualcomm.com/doc/80-70022-50/topic/multi-camera-streaming-python-sample-app.html#multi-camera-streaming-python-sample-app__section_vp3_hss_ndc).
## Run the application on the target device
1. Ensure that you complete the [Prerequisites](https://docs.qualcomm.com/doc/80-70022-50/topic/prerequisites-for-python-sample-applications.html).
2. Run any of the following use cases:
- View the output (preview) on
display:
gst-multi-camera-stream-example.py -D 1 --width=1920 --height=1080Copy to clipboard
- View the encoder
output:
gst-multi-camera-stream-example.py -D 0 --width=1920 --height=1080 --framerate=30/1Copy to clipboard
3. To display the available help options, run the following
command:
gst-multi-camera-stream-example.py --helpCopy to clipboard
## Expected output
For the video composition
pipeline, the output is displayed as preview.
Figure : Expected output for gst-multi-camera-example.py application–Preview
For video encoding pipeline, the output is saved to a file.
## Pipeline flow
The following table lists the plugins used in the multi-camera streaming
pipeline:| Pipeline | Description |
| --- | --- |
| Preview on display |
qtiqmmfsrc captures video from both camera0 and camera1.
Capsfilter is applied to enforce constraints on the raw video data.
qtivcomposer composites the video streams and sends the composited video data to Wayland display sink.
qtiqmmfsrc captures video from both camera0 and camera1.
Capsfilter is applied to enforce constraints on the raw video data.
v4l2h264enc is used to encode the video using the H.264 format.
H264parse is used to parse the video.
Mp4mux is used to multiplex the video into an MP4 container.
Filesink is used to write the video to a file.
|
## Related information
[Multi-camera streaming](https://docs.qualcomm.com/doc/80-70022-50/topic/gst-multi-camera-stream-example.html)
**Parent Topic:** [Run Python-based applications](https://docs.qualcomm.com/doc/80-70022-50/topic/python-sample-applications.html)
Last Published: Feb 20, 2026
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