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Added error handling for video capture in OpenCV code #1

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Feb 25, 2023
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Added error handling for video capture in OpenCV code #1

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4 changes: 3 additions & 1 deletion docs/intro/intro.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -95,6 +95,8 @@ and then loop back. The loop finishes when **q** is pressed::
while True:
# Capture frame-by-frame
ret, frame = cap.read()
if not ret:
break

# Our operations on the frame come here
gray = cv.cvtColor(frame, cv.COLOR_BGR2GRAY)
Expand Down Expand Up @@ -344,4 +346,4 @@ Mouse callback::
cb(evt, x, y, flags, param)

cv.createTrackbar('name', 'win', 0, max, cb)
cv.getTrackbarPos('name', 'win')
cv.getTrackbarPos('name', 'win')