我想使用 ffmpeg 将视频从我的无人机实时传输到 WEBUI。但我得到了以下错误。 该代码有效，但我认为不应出现此错误。 有人可以帮助解决这个问题吗？这是我的无人机命令以及流视频代码。我只添加了获取数据的代码。 下面是错误： pipe error
我的代码如下：
logger = logging.getLogger(__name__)
DEFAULT_DISTANCE = 0.30
DEFAULT_SPEED = 10
DEFAULT_DEGREE = 10
FRAME_X = int(960/3)
FRAME_Y = int(720/3)
FRAME_AREA = FRAME_X * FRAME_Y
FRAME_SIZE = FRAME_AREA * 3
FRAME_CENTER_X = FRAME_X / 2
FRAME_CENTER_Y = FRAME_Y / 2
CMD_FFMPEG = (f'ffmpeg - hwaccel auto -hwaccel_device opencl -i pipe:0 '
f'-pix_fmt bgr24 -s {FRAME_X}x{FRAME_Y} -f rawvideo pipe:1')
class DroneManager(metaclass=Singleton):
def __init__(self, host_ip='192.168.10.2', host_port=8890,
drone_ip='192.168.10.1', drone_port=8889,
is_imperial=False, speed=DEFAULT_SPEED):
self.host_ip = host_ip
self.host_port = host_port
self.drone_ip = drone_ip
self.drone_port = drone_port
self.drone_address = (drone_ip, drone_port)
self.is_imperial = is_imperial
self.speed = speed
self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.socket.bind((self.host_ip, self.host_port))
self.response = None
self.stop_event = threading.Event()
self._response_thread = threading.Thread(target=self.receive_response,
args=(self.stop_event,))
self._response_thread.start()
self.patrol_event = None
self.is_patrol = False
self._patrol_semaphore = threading.Semaphore(1)
self._thread_patrol = None
self.proc = subprocess.Popen(CMD_FFMPEG.split(' '),
stdin=subprocess.PIPE,
stdout=subprocess.PIPE)
self.proc_stdin = self.proc.stdin
self.proc_stdout = self.proc.stdout
self.video_port = 11111
self._receive_video_thread = threading.Thread(
target=self.receive_video,
args=(self.stop_event, self.proc_stdin,
self.host_ip, self.video_port,))
self._receive_video_thread.start()
self.send_command('command')
self.send_command('streamon')
self.set_speed(self.speed)
def receive_response(self, stop_event):
while not stop_event.is_set():
try:
self.response, ip = self.socket.recvfrom(3000)
logger.info({'action': 'receive_response',
'response': self.response})
except socket.error as ex:
logger.error({'action': 'receive_response',
'ex': ex})
break
def __dell__(self):
self.stop()
def stop(self):
self.stop_event.set()
retry = 0
while self._response_thread.is_alive():
time.sleep(0.3)
if retry > 30:
break
retry += 1
self.socket.close()
os.kill(self.proc.pid, signal.CTRL_C_EVENT)
def send_command(self, command):
logger.info({'action': 'send_command', 'command': command})
self.socket.sendto(command.encode('utf-8'), self.drone_address)
retry = 0
while self.response is None:
time.sleep(0.3)
if retry > 3:
break
retry += 1
if self.response is None:
response = None
else:
response = self.response.decode('utf-8')
self.response = None
return response
def takeoff(self):
return self.send_command('takeoff')
def land(self):
return self.send_command('land')
def move(self, direction, distance):
distance = float(distance)
if self.is_imperial:
distance = int(round(distance * 30.48))
else:
distance = int(round(distance * 100))
return self.send_command(f'{direction} {distance}')
def up(self, distance=DEFAULT_DISTANCE):
return self.move('up', distance)
def down(self, distance=DEFAULT_DISTANCE):
return self.move('down', distance)
def left(self, distance=DEFAULT_DISTANCE):
return self.move('left', distance)
def right(self, distance=DEFAULT_DISTANCE):
return self.move('right', distance)
def forward(self, distance=DEFAULT_DISTANCE):
return self.move('forward', distance)
def back(self, distance=DEFAULT_DISTANCE):
return self.move('back', distance)
def set_speed(self, speed):
return self.send_command(f'speed {speed}')
def clockwise(self, degree=DEFAULT_DEGREE):
return self.send_command(f'cw {degree}')
def counter_clockwise(self, degree=DEFAULT_DEGREE):
return self.send_command(f'ccw {degree}')
def flip_front(self):
return self.send_command('flip f')
def flip_back(self):
return self.send_command('flip b')
def flip_left(self):
return self.send_command('flip l')
def flip_right(self):
return self.send_command('flip r')
def patrol(self):
if not self.is_patrol:
self.patrol_event = threading.Event()
self._thread_patrol = threading.Thread(
target=self._patrol,
args=(self._patrol_semaphore, self.patrol_event,))
self._thread_patrol.start()
self.is_patrol = True
def stop_patrol(self):
if self.is_patrol:
self.patrol_event.set()
retry = 0
while self._thread_patrol.is_alive():
time.sleep(0.3)
if retry > 300:
break
retry += 1
self.is_patrol = False
def _patrol(self, semaphore, stop_event):
is_acquire = semaphore.acquire(blocking=False)
if is_acquire:
logger.info({'action': '_patrol', 'status': 'acquire'})
with contextlib.ExitStack() as stack:
stack.callback(semaphore.release)
status = 0
while not stop_event.is_set():
status += 1
if status == 1:
self.up()
if status == 2:
self.clockwise(180)
if status == 3:
self.down()
if status == 4:
status = 0
time.sleep(5)
else:
logger.warning({'action': '_patrol', 'status': 'not_acquire'})
def receive_video(self, stop_event, pipe_in, host_ip, video_port):
with socket.socket(socket.AF_INET, socket.SOCK_DGRAM) as sock_video:
sock_video.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock_video.settimeout(5)
sock_video.bind((host_ip, video_port))
data = bytearray(2048)
while not self.stop_event.is_set():
try:
size, addr = sock_video.recvfrom_into(data)
logger.info({'action': 'receive_video', 'data': data})
except socket.timeout as ex:
logger.warning({'action': 'receive_video', 'ex': ex})
time.sleep(0.5)
continue
except socket.error as ex:
logger.error({'action': 'receive_video', 'ex': ex})
break
try:
pipe_in.write(data[:size])
pipe_in.flush()
except Exception as ex:
logger.info({'action': 'receive_video', 'ex': ex})
break
答案 0 :(得分：1)
将 - hwaccel auto 更改为 -hwaccel auto。