Switch to picamera2 and add timestamp overlay #485
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Pull Request Overview
This PR migrates the camera streaming implementation from libcamera-vid CLI to the picamera2 Python library, adds timestamp overlays to the video stream, and improves error handling.
- Replaced subprocess-based
libcamera-vidapproach with nativepicamera2library for better control and integration - Added timestamp overlay functionality using OpenCV that displays current date/time on the video stream
- Enhanced error handling with graceful shutdown and automatic retry logic
| libcamera_cmd.extend(["-o", "-"]) # Output to stdout (pipe) | ||
| picam2.configure( | ||
| picam2.create_video_configuration( | ||
| main={"size": (1280, 720)}, transform=Transform(hflip=CAMERA_HFLIP, vflip=CAMERA_VFLIP) |
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The video resolution changed from 854x480 to 1280x720 without corresponding bitrate adjustment. This represents a 2.5x increase in pixels but uses the same 1 Mbps bitrate (line 65), which may result in lower quality video. Consider increasing the bitrate to 2-3 Mbps for 720p streaming.
Co-authored-by: Copilot <[email protected]>
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Fixes #213
By default, the picamera2
FfmpegOutputhides thethread_queue_sizeso we had to create a fork of it (https://github.com/AccelerationConsortium/picamera2) to change those values. Thus, moving forwards, the picamera2 dependency would have to be installed from the fork.We are pending additional testing with the cron auto restarts.