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Animated WebP Support #25608 related issues #24855 #22569 ### Pull Request Readiness Checklist See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request - [x] I agree to contribute to the project under Apache 2 License. - [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV - [x] The PR is proposed to the proper branch - [x] There is a reference to the original bug report and related work - [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable Patch to opencv_extra has the same branch name. - [ ] The feature is well documented and sample code can be built with the project CMake
53 lines
1.6 KiB
Python
53 lines
1.6 KiB
Python
import cv2 as cv
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import numpy as np
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def main(filename):
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## [write_animation]
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if filename == "animated_image.webp":
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# Create an Animation instance to save
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animation_to_save = cv.Animation()
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# Generate a base image with a specific color
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image = np.full((128, 256, 4), (150, 150, 150, 255), dtype=np.uint8)
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duration = 200
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frames = []
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durations = []
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# Populate frames and durations in the Animation object
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for i in range(10):
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frame = image.copy()
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cv.putText(frame, f"Frame {i}", (30, 80), cv.FONT_HERSHEY_SIMPLEX, 1.5, (255, 100, 0, 255), 2)
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frames.append(frame)
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durations.append(duration)
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animation_to_save.frames = frames
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animation_to_save.durations = durations
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# Write the animation to file
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cv.imwriteanimation(filename, animation_to_save, [cv.IMWRITE_WEBP_QUALITY, 100])
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## [write_animation]
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## [init_animation]
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animation = cv.Animation()
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## [init_animation]
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## [read_animation]
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success, animation = cv.imreadanimation(filename)
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if not success:
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print("Failed to load animation frames")
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return
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## [read_animation]
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## [show_animation]
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while True:
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for i, frame in enumerate(animation.frames):
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cv.imshow("Animation", frame)
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key_code = cv.waitKey(animation.durations[i])
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if key_code == 27: # Exit if 'Esc' key is pressed
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return
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## [show_animation]
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if __name__ == "__main__":
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import sys
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main(sys.argv[1] if len(sys.argv) > 1 else "animated_image.webp")
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