Eliminating redundant frames in a video using Python

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Eliminating redundant frames in a video using Python



I was looking at a real time problem where we need to eliminate the redundant frames of a video.(May be a video with lyrics of a song)
In my example, lyrics video song, we are not concerned about the audio. Only frames containing the lyrics. but the thing is 2 line of lyrics my end up with 20seconds ending up with multiple frames having the same lyrics. So I was interested in eliminating those redundant frames.



While searching, I have found this code to extract frames from a video by this - Python - Extracting and Saving Video Frames


import cv2
vidcap = cv2.VideoCapture('Compton.mp4')
success,image = vidcap.read()
count = 0
success = True
while success:
success,image = vidcap.read()
cv2.imwrite("frame%d.jpg" % count, image) # save frame as JPEG file
if cv2.waitKey(10) == 27: # exit if Escape is hit
break
count += 1



Can you please help me how to proceed in order to eliminate the redundant frames from here on.




1 Answer
1



If you just need the frames(jpegs)then you can use ffmpeg video filter option and extract the frames at a given frame rate(fps)



ffmpeg -i "Compton.mp4" -vf fps=1 frame%04d.jpg -hide_banner


ffmpeg -i "Compton.mp4" -vf fps=1 frame%04d.jpg -hide_banner



This will extract one frame a second. You can tweak it based on how frequently your lyrics change in the video.



If you want to use it in python then ffmpeg-python is a great tool.



Hope it helps.






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