Convert str to numpy.ndarray

Question

I\'m creating a system to share video with opencv but I\'ve got a problem. I\'ve a server and a client but when I send informations to the server, the must be bytes. I send

Answer 1

Your str(frame).encode() is wrong. If you print it to terminal, then you will find it is not the data of the frame.

An alternative method is to use tobytes() and frombuffer().

## read
ret, frame = cap.read()
sz = frame.shape

## tobytes 
frame_bytes = frame.tobytes()
print(type(frame_bytes))
# 

## frombuffer and reshape 
frame_frombytes = np.frombuffer(frame_bytes, dtype=np.uint8).reshape(sz)
print(type(frame_frombytes))
## 

## test whether they equal or not 
print(np.array_equal(frame, frame_frombytes))