I have managed to convert to mp4 with ffmpeg but have an issue with framerate.
I run the example below ( based on capture_circular example) but whatever I set fps to I always get 30fps, for both the h264 and the mp4, as shown by vlc or ffplay.
I am using a Pi4 , with 64bit bookworm, as the Pi5 gives an issue I assume due to no timestamps in the h264.
Any thoughts
I run the example below ( based on capture_circular example) but whatever I set fps to I always get 30fps, for both the h264 and the mp4, as shown by vlc or ffplay.
I am using a Pi4 , with 64bit bookworm, as the Pi5 gives an issue I assume due to no timestamps in the h264.
Any thoughts
Code:
#!/usr/bin/python3import timeimport osimport datetimeimport numpy as npfrom picamera2 import Picamera2, Previewfrom picamera2.encoders import H264Encoderfrom picamera2.outputs import CircularOutputfrom libcamera import controls# setup directoriesHome_Files = []Home_Files.append(os.getlogin())pic_dir = "/home/" + Home_Files[0]+ "/Videos/"lsize = (640, 480)picam2 = Picamera2()video_config = picam2.create_video_configuration(main={"size": (1280, 720), "format": "RGB888"}, lores={"size": lsize, "format": "YUV420"}, display="lores")picam2.configure(video_config)picam2.start_preview(Preview.QTGL)encoder = H264Encoder(3000000, repeat=True)encoder.output = CircularOutput(buffersize = 150)picam2.start()picam2.start_encoder(encoder)picam2.set_controls({"AfMode": controls.AfModeEnum.Continuous})fps = 25picam2.set_controls({"FrameRate": fps})w, h = lsizeprev = Noneencoding = Falseltime = 0while True: cur = picam2.capture_array("lores") if prev is not None: mse = np.square(np.subtract(cur, prev)).mean() if mse > 50: if not encoding: now = datetime.datetime.now() timestamp = now.strftime("%y%m%d%H%M%S") encoder.output.fileoutput = pic_dir + str(timestamp) + '.h264' encoder.output.start() encoding = True print("New Motion", mse) ltime = time.time() else: if encoding and time.time() - ltime > 10.0: encoder.output.stop() encoding = False print("Saved: ",pic_dir + str(timestamp) + '.h264') # make mp4 cmd = 'ffmpeg -framerate ' + str(fps) + ' -i ' + pic_dir + str(timestamp) + '.h264' cmd += ' -c copy ' + pic_dir + str(timestamp) + '.mp4' print(cmd) os.system(cmd) prev = curpicam2.stop_encoder()Statistics: Posted by gordon77 — Mon Feb 26, 2024 10:29 am