python 视频 b'\x1aE\xdf\xa3\x01\x00\x00\x00\x00\x00\x00\

Question

i receive from websockets this video stream b'\x1aE\xdf\xa3\x01\x00\x00\x00\x00\x00\x00.... i save the strea to file

Blockquote

frame = await websocket.recv()
dataImg64 = str(frame)
with open("from_web.mp4", "wb") as f:
                f.write(stream)
                f.flush()

Blockquote

the file from_web.mp4 contains b'\x1aE\xdf\xa3\x01\x00\x00\x00\x00\x00\x00....

i try to open the from_web.mp4 cap = cv2.VideoCapture("da_email.mp4") but i have the error

[mov,mp4,m4a,3gp,3g2,mj2 @ 0x27cd9e0] moov atom not found
VIDIOC_REQBUFS: Inappropriate ioctl for device

any suggestions? Peter

Answer 1

i re-write the part of code

frame = await websocket.recv()
stream= str(frame)##i made a cast to string, is right?
with open("from_web.mp4", "wb") as f:
            f.write(stream)
            f.flush()

cap = cv2.VideoCapture("da_email.mp4")

Answer 2

i have resolve, with this part of code frame = await websocket.recv()

with open("from_web.mp4", "wb") as f:
        f.write(frame[0:len(frame)])
        f.flush()

cap = cv2.VideoCapture("da_email.mp4")