Camera board • Re: Getting the most FPS/Quality out of the Pi Camera Module

Holy smokes, that YUV suggestion was stellar it doubled my recorded MP4 video FPS!

I did get a 5-10% boost in JPEG image FPS rate, but it did seem to demand 3% more CPU

pi_config = picam2.create_video_configuration(main={"size": (w, h), "format": "YUV420"},buffer_count=10)
encoder = H264Encoder(10000000)
output = FfmpegOutput(mp4_file, audio=True)

picam2.start_recording(encoder, output, quality=Quality.VERY_HIGH)

#I had to use the right YUV correction, otherwise I was blue skinned

curr_frame = cv2.cvtColor( picam2.capture_array(), cv2.COLOR_YUV420p2RGB)


I will look that that MPEG Encoder to see if I can get another speed boost from that. My use case is:

In a loop:
- Extract a real time image from somewhere.
-Save The image as a clean image (no markup)
-Do Detection on the image to see if there was any motion
-If there was detection, send the clean image to a server for object detection later on with YOLO
-Send the image to any real time monitoring applications if they request it.

If I can do this better with the MPEG Encoder, basically let it start the same time as the MP4 encoder, and be able to pull a current frame from it that is in RGB format, that would be great. Those examples you posted don't quite show how to do that, I will have to look into it. Hopefully it can coexist with MP4 encoder.

Statistics: Posted by UltimateCodeWarrior — Tue Dec 17, 2024 9:40 pm

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