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add support for ffmpeg hwaccel params and better mask handling

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blakeblackshear 2019-07-13 07:40:14 -05:00 committed by Blake Blackshear
parent a770ab7f69
commit 436b876b24
1 changed files with 22 additions and 10 deletions
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32
frigate/video.py
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@ -13,13 +13,15 @@ from . objects import ObjectCleaner, BestPersonFrame
from . mqtt import MqttObjectPublisher
# fetch the frames as fast a possible and store current frame in a shared memory array
def fetch_frames(shared_arr, shared_frame_time, frame_lock, frame_ready, frame_shape, rtsp_url, take_frame=1):
def fetch_frames(shared_arr, shared_frame_time, frame_lock, frame_ready, frame_shape, rtsp_url, take_frame=1, ffmpeg_hwaccel_args=[]):
# convert shared memory array into numpy and shape into image array
arr = tonumpyarray(shared_arr).reshape(frame_shape)
frame_size = frame_shape[0] * frame_shape[1] * frame_shape[2]
ffmpeg_cmd = ['ffmpeg',
'-hide_banner', '-loglevel', 'panic',
ffmpeg_global_args = [
'-hide_banner', '-loglevel', 'panic'
]
ffmpeg_input_args = [
'-avoid_negative_ts', 'make_zero',
'-fflags', 'nobuffer',
'-flags', 'low_delay',
@ -27,11 +29,19 @@ def fetch_frames(shared_arr, shared_frame_time, frame_lock, frame_ready, frame_s
'-fflags', '+genpts',
'-rtsp_transport', 'tcp',
'-stimeout', '5000000',
'-use_wallclock_as_timestamps', '1',
'-i', rtsp_url,
'-f', 'rawvideo',
'-pix_fmt', 'rgb24',
'pipe:']
'-use_wallclock_as_timestamps', '1'
]
ffmpeg_cmd = (['ffmpeg'] +
ffmpeg_global_args +
ffmpeg_hwaccel_args +
ffmpeg_input_args +
['-i', rtsp_url,
'-f', 'rawvideo',
'-pix_fmt', 'rgb24',
'pipe:'])
print(" ".join(ffmpeg_cmd))
pipe = sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size)
@ -130,6 +140,7 @@ class Camera:
self.recent_frames = {}
self.rtsp_url = get_rtsp_url(self.config['rtsp'])
self.take_frame = self.config.get('take_frame', 1)
self.ffmpeg_hwaccel_args = self.config.get('ffmpeg_hwaccel_args', [])
self.regions = self.config['regions']
self.frame_shape = get_frame_shape(self.rtsp_url)
self.mqtt_client = mqtt_client
@ -195,7 +206,8 @@ class Camera:
# load in the mask for person detection
if 'mask' in self.config:
self.mask = cv2.imread("/config/{}".format(self.config['mask']), cv2.IMREAD_GRAYSCALE)
else:
if self.mask is None:
self.mask = np.zeros((self.frame_shape[0], self.frame_shape[1], 1), np.uint8)
self.mask[:] = 255
@ -211,7 +223,7 @@ class Camera:
print("Creating a new capture process...")
self.capture_process = mp.Process(target=fetch_frames, args=(self.shared_frame_array,
self.shared_frame_time, self.frame_lock, self.frame_ready, self.frame_shape,
self.rtsp_url, self.take_frame))
self.rtsp_url, self.take_frame, self.ffmpeg_hwaccel_args))
self.capture_process.daemon = True
print("Starting a new capture process...")
self.capture_process.start()