# Multi-camera streaming using Python
Source: [https://docs.qualcomm.com/doc/80-70017-50/topic/multi-camera-streaming-python-sample-app.html](https://docs.qualcomm.com/doc/80-70017-50/topic/multi-camera-streaming-python-sample-app.html)
The **gst-multi-camera-example.py** application enables 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 on the plugins used in this pipeline, see [Pipeline flow](https://docs.qualcomm.com/doc/80-70017-50/topic/multi-camera-streaming-python-sample-app.html#multi-camera-streaming-python-sample-app__section_vp3_hss_ndc).
## Run the application
1. Ensure that you complete the [Prerequisites](https://docs.qualcomm.com/doc/80-70017-50/topic/python-sample-applications.html#python-sample-applications__section_gm5_s5j_bdc).
2. View the output (preview) on
display:
python3 gst-multi-camera-stream-example.py --width=1920 --height=1080 –framerate=30/1Copy to clipboard
3. View the encoder
output:
python3 gst-multi-camera-stream-example.py –D --width=1920 --height=1080Copy to clipboard
To display the available help options, run the following command:
python3 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 table lists the plugins used in the multiple 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.
- Waylandsink shows the live preview.
|
| Encoder dump on the device |
- 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.
|
**Parent Topic:** [Python applications](https://docs.qualcomm.com/doc/80-70017-50/topic/python-sample-applications.html)
**Related Resources**
- [Multiple camera streaming](https://docs.qualcomm.com/doc/80-70017-50/topic/gst-multi-camera-stream-example.html)
Last Published: Oct 01, 2026
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