Question

我已经编写了以下代码来通过GRPC传输视频。我正在使用客户端流媒体。客户端通过流以帧的形式发送视频。每个帧都转换为bytes数据类型并进行传输。

但是我的视频播放速度比实际速度慢。如何确保视频以实际速度播放？

imageTest.proto文件

syntax = "proto3";

option java_multiple_files = true;
option objc_class_prefix = "HLW";


// The greeting service definition.
service ImageTest {
  // Sends a greeting
  rpc Analyse (stream MsgRequest) returns (MsgReply) {}
}

// The request message containing the image.
message MsgRequest {
  bytes img = 1;
}

// The response message containing the reply
message MsgReply {
  int32 reply = 1;
}

imageTest_server.py

class Greeter(imageTest_pb2_grpc.ImageTestServicer):

def Analyse(self, request_iterator, context):
  for req in request_iterator:
      frame = np.array(list(req.img))
      frame = frame.reshape( (576,704) )
      frame = np.array(frame, dtype = np.uint8 )

      cv2.imshow('Processed Image', frame)
      cv2.waitKey(1)


return imageTest_pb2.MsgReply(reply = cnt )


def serve():
  server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
  imageTest_pb2_grpc.add_ImageTestServicer_to_server(Greeter(),     server)
  server.add_insecure_port('[::]:50051')
  server.start()
  try:
    while True:
    time.sleep(_ONE_DAY_IN_SECONDS)
  except KeyboardInterrupt:
  server.stop(0)

if __name__ == '__main__':
  serve()

imageTest_client.py

def run():
   channel = grpc.insecure_channel('localhost:50051')
   stub = imageTest_pb2_grpc.ImageTestStub(channel)
   response = stub.Analyse( generateRequests() )

def generateRequests():
    videogen = skvideo.io.vreader(URL)
    for frame in videogen:
        frame = cv2.cvtColor( frame, cv2.COLOR_RGB2GRAY )
        frame = bytes(frame)     
        yield imageTest_pb2.MsgRequest(img= frame)



if __name__ == '__main__':
  run()

通过GRPC传输的视频播放速度很慢

0 个答案: