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* reduce idle cpu from onnxruntime and opencv thread pools ONNX Runtime's intra-op threads kept spinning for about 1 s after every run, so a CPU enrichment called once a second or more kept most cores busy. On a 16 thread machine, arcface at one call per second used 9.4 s of CPU per call with ~360 ms latency. Enrichment sessions on the CPU execution provider now set `session.intra_op.allow_spinning` to 0, which drops that to 1.9 s with no latency change. Detector sessions and GPU providers are unchanged, since disabling spinning doubled yolov9-t latency on CPU (12 to 23 ms). The output and embeddings processes now run OpenCV single threaded, like the camera tracking process. A 4 camera birdseye redraw at 1080p drops from 13.7 to 4.0 ms of CPU, and the full frame conversion in the enrichment processors from 23 to 2.7 ms, each adding about 1 ms of wall time. * test that only cpu enrichment sessions disable ort spinning * patch out the neural engine in the spinning test
Frigate NVR™ - Realtime Object Detection for IP Cameras
[English] | 简体中文
A complete and local NVR designed for Home Assistant with AI object detection. Uses OpenCV and Tensorflow to perform realtime object detection locally for IP cameras.
Use of a GPU or AI accelerator is highly recommended. AI accelerators will outperform even the best CPUs with very little overhead. See Frigate's supported object detectors.
- Tight integration with Home Assistant via a custom component
- Designed to minimize resource use and maximize performance by only looking for objects when and where it is necessary
- Leverages multiprocessing heavily with an emphasis on realtime over processing every frame
- Uses a very low overhead motion detection to determine where to run object detection
- Object detection with TensorFlow runs in separate processes for maximum FPS
- Communicates over MQTT for easy integration into other systems
- Records video with retention settings based on detected objects
- 24/7 recording
- Re-streaming via RTSP to reduce the number of connections to your camera
- WebRTC & MSE support for low-latency live view
Documentation
View the documentation at https://docs.frigate.video
Donations
If you would like to make a donation to support development, please use Github Sponsors.
License
This project is licensed under the MIT License.
- Code: The source code, configuration files, and documentation in this repository are available under the MIT License. You are free to use, modify, and distribute the code as long as you include the original copyright notice.
- Trademarks: The "Frigate" name, the "Frigate NVR" brand, and the Frigate logo are trademarks of Frigate, Inc. and are not covered by the MIT License.
Please see our Trademark Policy for details on acceptable use of our brand assets.
Screenshots
Live dashboard
Streamlined review workflow
Multi-camera scrubbing
Built-in mask and zone editor
Translations
We use Weblate to support language translations. Contributions are always welcome.
Copyright © 2026 Frigate, Inc.