mirror of
https://github.com/blakeblackshear/frigate.git
synced 2024-12-19 19:06:16 +01:00
handle various scenarios with external process failures
This commit is contained in:
Blake Blackshear
parent
a60b9211d2
commit
3a9781c4f8
@ -52,6 +52,12 @@ RUN wget -q https://storage.googleapis.com/download.tensorflow.org/models/tflite
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mv /detect.tflite /cpu_model.tflite && \
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rm /cpu_model.zip
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RUN apt -qq update && apt -qq install --no-install-recommends -y \
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gdb \
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python3.7-dbg \
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&& rm -rf /var/lib/apt/lists/* \
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&& (apt-get autoremove -y; apt-get autoclean -y)
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WORKDIR /opt/frigate/
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ADD frigate frigate/
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COPY detect_objects.py .
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@ -1,4 +1,7 @@
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import os
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import sys
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import traceback
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import signal
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import cv2
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import time
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import datetime
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@ -58,27 +61,50 @@ GLOBAL_OBJECT_CONFIG = CONFIG.get('objects', {})
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WEB_PORT = CONFIG.get('web_port', 5000)
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DEBUG = (CONFIG.get('debug', '0') == '1')
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def start_plasma_store():
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plasma_cmd = ['plasma_store', '-m', '400000000', '-s', '/tmp/plasma']
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plasma_process = sp.Popen(plasma_cmd, stdout=sp.DEVNULL)
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time.sleep(1)
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rc = plasma_process.poll()
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if rc is not None:
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return None
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return plasma_process
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class CameraWatchdog(threading.Thread):
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def __init__(self, camera_processes, config, tflite_process, tracked_objects_queue, object_processor):
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def __init__(self, camera_processes, config, tflite_process, tracked_objects_queue, object_processor, plasma_process):
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threading.Thread.__init__(self)
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self.camera_processes = camera_processes
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self.config = config
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self.tflite_process = tflite_process
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self.tracked_objects_queue = tracked_objects_queue
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self.object_processor = object_processor
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self.plasma_process = plasma_process
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def run(self):
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time.sleep(10)
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while True:
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# wait a bit before checking
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time.sleep(30)
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# check the plasma process
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rc = self.plasma_process.poll()
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if rc != None:
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print(f"plasma_process exited unexpectedly with {rc}")
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self.plasma_process = start_plasma_store()
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time.sleep(10)
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# check the detection process
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if (self.tflite_process.detection_start.value > 0.0 and
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datetime.datetime.now().timestamp() - self.tflite_process.detection_start.value > 10):
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print("Detection appears to be stuck. Restarting detection process")
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self.tflite_process.start_or_restart()
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time.sleep(30)
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elif not self.tflite_process.detect_process.is_alive():
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print("Detection appears to have stopped. Restarting detection process")
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self.tflite_process.start_or_restart()
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time.sleep(30)
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# check the camera processes
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for name, camera_process in self.camera_processes.items():
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process = camera_process['process']
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if not process.is_alive():
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@ -86,14 +112,33 @@ class CameraWatchdog(threading.Thread):
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camera_process['fps'].value = float(self.config[name]['fps'])
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camera_process['skipped_fps'].value = 0.0
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camera_process['detection_fps'].value = 0.0
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camera_process['read_start'].value = 0.0
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camera_process['ffmpeg_pid'].value = 0
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process = mp.Process(target=track_camera, args=(name, self.config[name], FFMPEG_DEFAULT_CONFIG, GLOBAL_OBJECT_CONFIG,
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self.tflite_process.detection_queue, self.tracked_objects_queue,
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camera_process['fps'], camera_process['skipped_fps'], camera_process['detection_fps']))
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camera_process['fps'], camera_process['skipped_fps'], camera_process['detection_fps'],
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camera_process['read_start'], camera_process['ffmpeg_pid']))
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process.daemon = True
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camera_process['process'] = process
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process.start()
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print(f"Camera_process started for {name}: {process.pid}")
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if (camera_process['read_start'].value > 0.0 and
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datetime.datetime.now().timestamp() - camera_process['read_start'].value > 10):
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print(f"Process for {name} has been reading from ffmpeg for over 10 seconds long. Killing ffmpeg...")
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ffmpeg_pid = camera_process['ffmpeg_pid'].value
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if ffmpeg_pid != 0:
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try:
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os.kill(ffmpeg_pid, signal.SIGTERM)
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except OSError:
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print(f"Unable to terminate ffmpeg with pid {ffmpeg_pid}")
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time.sleep(10)
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try:
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os.kill(ffmpeg_pid, signal.SIGKILL)
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print(f"Unable to kill ffmpeg with pid {ffmpeg_pid}")
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except OSError:
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pass
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def main():
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# connect to mqtt and setup last will
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def on_connect(client, userdata, flags, rc):
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@ -117,14 +162,7 @@ def main():
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client.connect(MQTT_HOST, MQTT_PORT, 60)
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client.loop_start()
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# start plasma store
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plasma_cmd = ['plasma_store', '-m', '400000000', '-s', '/tmp/plasma']
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plasma_process = sp.Popen(plasma_cmd, stdout=sp.DEVNULL)
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time.sleep(1)
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rc = plasma_process.poll()
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if rc is not None:
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raise RuntimeError("plasma_store exited unexpectedly with "
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"code %d" % (rc,))
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plasma_process = start_plasma_store()
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##
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# Setup config defaults for cameras
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@ -135,7 +173,7 @@ def main():
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}
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# Queue for cameras to push tracked objects to
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tracked_objects_queue = mp.Queue()
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tracked_objects_queue = mp.SimpleQueue()
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# Start the shared tflite process
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tflite_process = EdgeTPUProcess()
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@ -146,11 +184,14 @@ def main():
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camera_processes[name] = {
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'fps': mp.Value('d', float(config['fps'])),
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'skipped_fps': mp.Value('d', 0.0),
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'detection_fps': mp.Value('d', 0.0)
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'detection_fps': mp.Value('d', 0.0),
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'read_start': mp.Value('d', 0.0),
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'ffmpeg_pid': mp.Value('i', 0)
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}
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camera_process = mp.Process(target=track_camera, args=(name, config, FFMPEG_DEFAULT_CONFIG, GLOBAL_OBJECT_CONFIG,
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tflite_process.detection_queue, tracked_objects_queue,
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camera_processes[name]['fps'], camera_processes[name]['skipped_fps'], camera_processes[name]['detection_fps']))
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tflite_process.detection_queue, tracked_objects_queue, camera_processes[name]['fps'],
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camera_processes[name]['skipped_fps'], camera_processes[name]['detection_fps'],
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camera_processes[name]['read_start'], camera_processes[name]['ffmpeg_pid']))
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camera_process.daemon = True
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camera_processes[name]['process'] = camera_process
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@ -161,7 +202,7 @@ def main():
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object_processor = TrackedObjectProcessor(CONFIG['cameras'], client, MQTT_TOPIC_PREFIX, tracked_objects_queue)
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object_processor.start()
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camera_watchdog = CameraWatchdog(camera_processes, CONFIG['cameras'], tflite_process, tracked_objects_queue, object_processor)
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camera_watchdog = CameraWatchdog(camera_processes, CONFIG['cameras'], tflite_process, tracked_objects_queue, object_processor, plasma_process)
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camera_watchdog.start()
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# create a flask app that encodes frames a mjpeg on demand
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@ -174,6 +215,23 @@ def main():
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# return a healh
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return "Frigate is running. Alive and healthy!"
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@app.route('/debug/stack')
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def processor_stack():
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frame = sys._current_frames().get(object_processor.ident, None)
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if frame:
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return "<br>".join(traceback.format_stack(frame)), 200
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else:
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return "no frame found", 200
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@app.route('/debug/print_stack')
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def print_stack():
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pid = int(request.args.get('pid', 0))
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if pid == 0:
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return "missing pid", 200
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else:
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os.kill(pid, signal.SIGUSR1)
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return "check logs", 200
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@app.route('/debug/stats')
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def stats():
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stats = {}
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@ -185,21 +243,22 @@ def main():
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stats[name] = {
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'fps': round(camera_stats['fps'].value, 2),
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'skipped_fps': round(camera_stats['skipped_fps'].value, 2),
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'detection_fps': round(camera_stats['detection_fps'].value, 2)
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'detection_fps': round(camera_stats['detection_fps'].value, 2),
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'read_start': camera_stats['read_start'].value,
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'pid': camera_stats['process'].pid,
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'ffmpeg_pid': camera_stats['ffmpeg_pid'].value
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}
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stats['coral'] = {
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'fps': round(total_detection_fps, 2),
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'inference_speed': round(tflite_process.avg_inference_speed.value*1000, 2),
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'detection_queue': tflite_process.detection_queue.qsize(),
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'detection_start': tflite_process.detection_start.value
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'detection_start': tflite_process.detection_start.value,
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'pid': tflite_process.detect_process.pid
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}
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rc = plasma_process.poll()
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rc = camera_watchdog.plasma_process.poll()
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stats['plasma_store_rc'] = rc
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stats['tracked_objects_queue'] = tracked_objects_queue.qsize()
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return jsonify(stats)
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@app.route('/<camera_name>/<label>/best.jpg')
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@ -7,7 +7,7 @@ import SharedArray as sa
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import pyarrow.plasma as plasma
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import tflite_runtime.interpreter as tflite
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from tflite_runtime.interpreter import load_delegate
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from frigate.util import EventsPerSecond
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from frigate.util import EventsPerSecond, listen
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def load_labels(path, encoding='utf-8'):
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"""Loads labels from file (with or without index numbers).
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@ -64,6 +64,7 @@ class ObjectDetector():
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def run_detector(detection_queue, avg_speed, start):
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print(f"Starting detection process: {os.getpid()}")
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listen()
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plasma_client = plasma.connect("/tmp/plasma")
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object_detector = ObjectDetector()
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@ -87,7 +88,7 @@ def run_detector(detection_queue, avg_speed, start):
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class EdgeTPUProcess():
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def __init__(self):
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self.detection_queue = mp.Queue()
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self.detection_queue = mp.SimpleQueue()
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self.avg_inference_speed = mp.Value('d', 0.01)
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self.detection_start = mp.Value('d', 0.0)
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self.detect_process = None
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@ -29,7 +29,6 @@ class TrackedObjectProcessor(threading.Thread):
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self.client = client
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self.topic_prefix = topic_prefix
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self.tracked_objects_queue = tracked_objects_queue
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self.plasma_client = plasma.connect("/tmp/plasma")
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self.camera_data = defaultdict(lambda: {
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'best_objects': {},
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'object_status': defaultdict(lambda: defaultdict(lambda: 'OFF')),
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@ -49,101 +48,106 @@ class TrackedObjectProcessor(threading.Thread):
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def run(self):
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while True:
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camera, frame_time, tracked_objects = self.tracked_objects_queue.get()
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try:
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self.plasma_client = plasma.connect("/tmp/plasma")
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while True:
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camera, frame_time, tracked_objects = self.tracked_objects_queue.get()
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config = self.config[camera]
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best_objects = self.camera_data[camera]['best_objects']
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current_object_status = self.camera_data[camera]['object_status']
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self.camera_data[camera]['tracked_objects'] = tracked_objects
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config = self.config[camera]
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best_objects = self.camera_data[camera]['best_objects']
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current_object_status = self.camera_data[camera]['object_status']
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self.camera_data[camera]['tracked_objects'] = tracked_objects
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###
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# Draw tracked objects on the frame
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###
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object_id_hash = hashlib.sha1(str.encode(f"{camera}{frame_time}"))
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object_id_bytes = object_id_hash.digest()
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object_id = plasma.ObjectID(object_id_bytes)
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current_frame = self.plasma_client.get(object_id, timeout_ms=0)
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###
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# Draw tracked objects on the frame
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###
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object_id_hash = hashlib.sha1(str.encode(f"{camera}{frame_time}"))
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object_id_bytes = object_id_hash.digest()
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object_id = plasma.ObjectID(object_id_bytes)
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current_frame = self.plasma_client.get(object_id, timeout_ms=0)
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if not current_frame is plasma.ObjectNotAvailable:
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# draw the bounding boxes on the frame
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for obj in tracked_objects.values():
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thickness = 2
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color = COLOR_MAP[obj['label']]
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if not current_frame is plasma.ObjectNotAvailable:
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# draw the bounding boxes on the frame
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for obj in tracked_objects.values():
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thickness = 2
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color = COLOR_MAP[obj['label']]
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if obj['frame_time'] != frame_time:
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thickness = 1
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color = (255,0,0)
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# draw the bounding boxes on the frame
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box = obj['box']
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draw_box_with_label(current_frame, box[0], box[1], box[2], box[3], obj['label'], f"{int(obj['score']*100)}% {int(obj['area'])}", thickness=thickness, color=color)
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# draw the regions on the frame
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region = obj['region']
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cv2.rectangle(current_frame, (region[0], region[1]), (region[2], region[3]), (0,255,0), 1)
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if config['snapshots']['show_timestamp']:
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time_to_show = datetime.datetime.fromtimestamp(frame_time).strftime("%m/%d/%Y %H:%M:%S")
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cv2.putText(current_frame, time_to_show, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, fontScale=.8, color=(255, 255, 255), thickness=2)
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###
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# Set the current frame as ready
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###
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self.camera_data[camera]['current_frame'] = current_frame
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# store the object id, so you can delete it at the next loop
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previous_object_id = self.camera_data[camera]['object_id']
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if not previous_object_id is None:
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self.plasma_client.delete([previous_object_id])
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self.camera_data[camera]['object_id'] = object_id
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if obj['frame_time'] != frame_time:
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thickness = 1
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color = (255,0,0)
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###
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# Maintain the highest scoring recent object and frame for each label
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###
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for obj in tracked_objects.values():
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# if the object wasn't seen on the current frame, skip it
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if obj['frame_time'] != frame_time:
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continue
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if obj['label'] in best_objects:
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now = datetime.datetime.now().timestamp()
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# if the object is a higher score than the current best score
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# or the current object is more than 1 minute old, use the new object
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if obj['score'] > best_objects[obj['label']]['score'] or (now - best_objects[obj['label']]['frame_time']) > 60:
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obj['frame'] = np.copy(self.camera_data[camera]['current_frame'])
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best_objects[obj['label']] = obj
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else:
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obj['frame'] = np.copy(self.camera_data[camera]['current_frame'])
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best_objects[obj['label']] = obj
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# draw the bounding boxes on the frame
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box = obj['box']
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draw_box_with_label(current_frame, box[0], box[1], box[2], box[3], obj['label'], f"{int(obj['score']*100)}% {int(obj['area'])}", thickness=thickness, color=color)
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# draw the regions on the frame
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region = obj['region']
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cv2.rectangle(current_frame, (region[0], region[1]), (region[2], region[3]), (0,255,0), 1)
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if config['snapshots']['show_timestamp']:
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time_to_show = datetime.datetime.fromtimestamp(frame_time).strftime("%m/%d/%Y %H:%M:%S")
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cv2.putText(current_frame, time_to_show, (10, 30), cv2.FONT_HERSHEY_SIMPLEX, fontScale=.8, color=(255, 255, 255), thickness=2)
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###
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# Report over MQTT
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###
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# count objects with more than 2 entries in history by type
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obj_counter = Counter()
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for obj in tracked_objects.values():
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if len(obj['history']) > 1:
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obj_counter[obj['label']] += 1
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# report on detected objects
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for obj_name, count in obj_counter.items():
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new_status = 'ON' if count > 0 else 'OFF'
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if new_status != current_object_status[obj_name]:
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current_object_status[obj_name] = new_status
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self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}", new_status, retain=False)
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# send the best snapshot over mqtt
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best_frame = cv2.cvtColor(best_objects[obj_name]['frame'], cv2.COLOR_RGB2BGR)
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ret, jpg = cv2.imencode('.jpg', best_frame)
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if ret:
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jpg_bytes = jpg.tobytes()
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self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}/snapshot", jpg_bytes, retain=True)
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###
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# Set the current frame as ready
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###
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self.camera_data[camera]['current_frame'] = current_frame
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# store the object id, so you can delete it at the next loop
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previous_object_id = self.camera_data[camera]['object_id']
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if not previous_object_id is None:
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self.plasma_client.delete([previous_object_id])
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self.camera_data[camera]['object_id'] = object_id
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###
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# Maintain the highest scoring recent object and frame for each label
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###
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for obj in tracked_objects.values():
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# if the object wasn't seen on the current frame, skip it
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if obj['frame_time'] != frame_time:
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continue
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if obj['label'] in best_objects:
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now = datetime.datetime.now().timestamp()
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# if the object is a higher score than the current best score
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# or the current object is more than 1 minute old, use the new object
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if obj['score'] > best_objects[obj['label']]['score'] or (now - best_objects[obj['label']]['frame_time']) > 60:
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obj['frame'] = np.copy(self.camera_data[camera]['current_frame'])
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best_objects[obj['label']] = obj
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else:
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obj['frame'] = np.copy(self.camera_data[camera]['current_frame'])
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best_objects[obj['label']] = obj
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||||
###
|
||||
# Report over MQTT
|
||||
###
|
||||
# count objects with more than 2 entries in history by type
|
||||
obj_counter = Counter()
|
||||
for obj in tracked_objects.values():
|
||||
if len(obj['history']) > 1:
|
||||
obj_counter[obj['label']] += 1
|
||||
|
||||
# report on detected objects
|
||||
for obj_name, count in obj_counter.items():
|
||||
new_status = 'ON' if count > 0 else 'OFF'
|
||||
if new_status != current_object_status[obj_name]:
|
||||
current_object_status[obj_name] = new_status
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}", new_status, retain=False)
|
||||
# send the best snapshot over mqtt
|
||||
best_frame = cv2.cvtColor(best_objects[obj_name]['frame'], cv2.COLOR_RGB2BGR)
|
||||
ret, jpg = cv2.imencode('.jpg', best_frame)
|
||||
if ret:
|
||||
jpg_bytes = jpg.tobytes()
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}/snapshot", jpg_bytes, retain=True)
|
||||
|
||||
# expire any objects that are ON and no longer detected
|
||||
expired_objects = [obj_name for obj_name, status in current_object_status.items() if status == 'ON' and not obj_name in obj_counter]
|
||||
for obj_name in expired_objects:
|
||||
current_object_status[obj_name] = 'OFF'
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}", 'OFF', retain=False)
|
||||
# send updated snapshot over mqtt
|
||||
best_frame = cv2.cvtColor(best_objects[obj_name]['frame'], cv2.COLOR_RGB2BGR)
|
||||
ret, jpg = cv2.imencode('.jpg', best_frame)
|
||||
if ret:
|
||||
jpg_bytes = jpg.tobytes()
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}/snapshot", jpg_bytes, retain=True)
|
||||
# expire any objects that are ON and no longer detected
|
||||
expired_objects = [obj_name for obj_name, status in current_object_status.items() if status == 'ON' and not obj_name in obj_counter]
|
||||
for obj_name in expired_objects:
|
||||
current_object_status[obj_name] = 'OFF'
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}", 'OFF', retain=False)
|
||||
# send updated snapshot over mqtt
|
||||
best_frame = cv2.cvtColor(best_objects[obj_name]['frame'], cv2.COLOR_RGB2BGR)
|
||||
ret, jpg = cv2.imencode('.jpg', best_frame)
|
||||
if ret:
|
||||
jpg_bytes = jpg.tobytes()
|
||||
self.client.publish(f"{self.topic_prefix}/{camera}/{obj_name}/snapshot", jpg_bytes, retain=True)
|
||||
except:
|
||||
pass
|
||||
@ -1,4 +1,6 @@
|
||||
import datetime
|
||||
import signal
|
||||
import traceback
|
||||
import collections
|
||||
import numpy as np
|
||||
import cv2
|
||||
@ -127,3 +129,9 @@ class EventsPerSecond:
|
||||
now = datetime.datetime.now().timestamp()
|
||||
seconds = min(now-self._start, last_n_seconds)
|
||||
return len([t for t in self._timestamps if t > (now-last_n_seconds)]) / seconds
|
||||
|
||||
def print_stack(sig, frame):
|
||||
traceback.print_stack(frame)
|
||||
|
||||
def listen():
|
||||
signal.signal(signal.SIGUSR1, print_stack)
|
||||
@ -15,7 +15,7 @@ import copy
|
||||
import itertools
|
||||
import json
|
||||
from collections import defaultdict
|
||||
from frigate.util import draw_box_with_label, area, calculate_region, clipped, intersection_over_union, intersection, EventsPerSecond
|
||||
from frigate.util import draw_box_with_label, area, calculate_region, clipped, intersection_over_union, intersection, EventsPerSecond, listen
|
||||
from frigate.objects import ObjectTracker
|
||||
from frigate.edgetpu import RemoteObjectDetector
|
||||
from frigate.motion import MotionDetector
|
||||
@ -98,28 +98,32 @@ def create_tensor_input(frame, region):
|
||||
# Expand dimensions since the model expects images to have shape: [1, 300, 300, 3]
|
||||
return np.expand_dims(cropped_frame, axis=0)
|
||||
|
||||
def start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process=None):
|
||||
def start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, pid, ffmpeg_process=None):
|
||||
if not ffmpeg_process is None:
|
||||
print("Terminating the existing ffmpeg process...")
|
||||
ffmpeg_process.terminate()
|
||||
try:
|
||||
print("Waiting for ffmpeg to exit gracefully...")
|
||||
ffmpeg_process.wait(timeout=30)
|
||||
ffmpeg_process.communicate(timeout=30)
|
||||
except sp.TimeoutExpired:
|
||||
print("FFmpeg didnt exit. Force killing...")
|
||||
ffmpeg_process.kill()
|
||||
ffmpeg_process.wait()
|
||||
ffmpeg_process.communicate()
|
||||
|
||||
print("Creating ffmpeg process...")
|
||||
print(" ".join(ffmpeg_cmd))
|
||||
return sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size*10)
|
||||
process = sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size*10)
|
||||
pid.value = process.pid
|
||||
return process
|
||||
|
||||
def track_camera(name, config, ffmpeg_global_config, global_objects_config, detection_queue, detected_objects_queue, fps, skipped_fps, detection_fps):
|
||||
def track_camera(name, config, ffmpeg_global_config, global_objects_config, detection_queue, detected_objects_queue, fps, skipped_fps, detection_fps, read_start, ffmpeg_pid):
|
||||
print(f"Starting process for {name}: {os.getpid()}")
|
||||
listen()
|
||||
|
||||
# Merge the ffmpeg config with the global config
|
||||
ffmpeg = config.get('ffmpeg', {})
|
||||
ffmpeg_input = get_ffmpeg_input(ffmpeg['input'])
|
||||
ffmpeg_restart_delay = ffmpeg.get('restart_delay', 0)
|
||||
ffmpeg_global_args = ffmpeg.get('global_args', ffmpeg_global_config['global_args'])
|
||||
ffmpeg_hwaccel_args = ffmpeg.get('hwaccel_args', ffmpeg_global_config['hwaccel_args'])
|
||||
ffmpeg_input_args = ffmpeg.get('input_args', ffmpeg_global_config['input_args'])
|
||||
@ -176,7 +180,7 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
|
||||
|
||||
object_tracker = ObjectTracker(10)
|
||||
|
||||
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size)
|
||||
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_pid)
|
||||
|
||||
plasma_client = plasma.connect("/tmp/plasma")
|
||||
frame_num = 0
|
||||
@ -187,19 +191,22 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
|
||||
skipped_fps_tracker.start()
|
||||
object_detector.fps.start()
|
||||
while True:
|
||||
start = datetime.datetime.now().timestamp()
|
||||
rc = ffmpeg_process.poll()
|
||||
if rc != None:
|
||||
print(f"{name}: ffmpeg_process exited unexpectedly with {rc}")
|
||||
print(f"Letting {name} rest for {ffmpeg_restart_delay} seconds before restarting...")
|
||||
time.sleep(ffmpeg_restart_delay)
|
||||
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_pid, ffmpeg_process)
|
||||
time.sleep(10)
|
||||
|
||||
read_start.value = datetime.datetime.now().timestamp()
|
||||
frame_bytes = ffmpeg_process.stdout.read(frame_size)
|
||||
duration = datetime.datetime.now().timestamp()-start
|
||||
duration = datetime.datetime.now().timestamp()-read_start.value
|
||||
read_start.value = 0.0
|
||||
avg_wait = (avg_wait*99+duration)/100
|
||||
|
||||
if not frame_bytes:
|
||||
rc = ffmpeg_process.poll()
|
||||
if rc is not None:
|
||||
print(f"{name}: ffmpeg_process exited unexpectedly with {rc}")
|
||||
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process)
|
||||
time.sleep(10)
|
||||
else:
|
||||
print(f"{name}: ffmpeg_process is still running but didnt return any bytes")
|
||||
if len(frame_bytes) == 0:
|
||||
print(f"{name}: ffmpeg_process didnt return any bytes")
|
||||
continue
|
||||
|
||||
# limit frame rate
|
||||
|
||||
Loading…
Reference in New Issue
Block a user