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add cv2 video stream

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This commit is contained in:
Lennart Heimbs 2019-08-04 16:37:40 +02:00
parent 559fe7f09d
commit c3fea65346
1 changed files with 23 additions and 26 deletions
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23
camera/video_client_pi_cv2.py
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@ -12,20 +12,17 @@ client_socket.connect(('my_server', 8000))
# Make a file-like object out of the connection # Make a file-like object out of the connection
connection = client_socket.makefile('wb') connection = client_socket.makefile('wb')
try: try:
cap = cv2. cap = cv2.VideoCapture("run.mp4")
with picamera.PiCamera() as camera:
camera.resolution = (640, 480) while True:
# Start a preview and let the camera warm up for 2 seconds ret, frame = cap.read()
camera.start_preview()
time.sleep(2) if frame == None:
break
image = cv2.imencode('.jpg', frame)
stream = image.tobytes()
# Note the start time and construct a stream to hold image data
# temporarily (we could write it directly to connection but in this
# case we want to find out the size of each capture first to keep
# our protocol simple)
start = time.time()
stream = io.BytesIO()
for foo in camera.capture_continuous(stream, 'jpeg'):
# Write the length of the capture to the stream and flush to # Write the length of the capture to the stream and flush to
# ensure it actually gets sent # ensure it actually gets sent
connection.write(struct.pack('<L', stream.tell())) connection.write(struct.pack('<L', stream.tell()))