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handle ffmpeg process failures in the camera process itself

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This commit is contained in:
Blake Blackshear 2020-02-26 19:02:12 -06:00
parent 791409d5e5
commit d8aa73d26e
1 changed files with 27 additions and 12 deletions
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39
frigate/video.py
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@ -98,6 +98,22 @@ 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):
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)
except sp.TimeoutExpired:
print("FFmpeg didnt exit. Force killing...")
ffmpeg_process.kill()
ffmpeg_process.wait()
print("Creating ffmpeg process...")
print(" ".join(ffmpeg_cmd))
return sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size*10)
def track_camera(name, config, ffmpeg_global_config, global_objects_config, detect_lock, detect_ready, frame_ready, detected_objects_queue, fps, skipped_fps, detection_fps):
print(f"Starting process for {name}: {os.getpid()}")
@ -108,6 +124,13 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
ffmpeg_hwaccel_args = ffmpeg.get('hwaccel_args', ffmpeg_global_config['hwaccel_args'])
ffmpeg_input_args = ffmpeg.get('input_args', ffmpeg_global_config['input_args'])
ffmpeg_output_args = ffmpeg.get('output_args', ffmpeg_global_config['output_args'])
ffmpeg_cmd = (['ffmpeg'] +
ffmpeg_global_args +
ffmpeg_hwaccel_args +
ffmpeg_input_args +
['-i', ffmpeg_input] +
ffmpeg_output_args +
['pipe:'])
# Merge the tracked object config with the global config
camera_objects_config = config.get('objects', {})
@ -152,18 +175,8 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
object_detector = RemoteObjectDetector('/labelmap.txt', detect_lock, detect_ready, frame_ready)
object_tracker = ObjectTracker(10)
ffmpeg_cmd = (['ffmpeg'] +
ffmpeg_global_args +
ffmpeg_hwaccel_args +
ffmpeg_input_args +
['-i', ffmpeg_input] +
ffmpeg_output_args +
['pipe:'])
print(" ".join(ffmpeg_cmd))
ffmpeg_process = sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size*10)
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size)
plasma_client = plasma.connect("/tmp/plasma")
frame_num = 0
@ -183,9 +196,11 @@ def track_camera(name, config, ffmpeg_global_config, global_objects_config, dete
rc = ffmpeg_process.poll()
if rc is not None:
print(f"{name}: ffmpeg_process exited unexpectedly with {rc}")
break
time.sleep(10)
ffmpeg_process = start_or_restart_ffmpeg(ffmpeg_cmd, frame_size, ffmpeg_process)
else:
print(f"{name}: ffmpeg_process is still running but didnt return any bytes")
continue
# limit frame rate
frame_num += 1