convert video to frames and then delete some frames???

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i have a video,i need to divide video into different frames..and then delete some of the frames below some threshold??please help me

Answers (2)

John Rogers
John Rogers on 10 Jul 2019
Here is an example:
% speedUpVideo
% Keeps one out of ten frames
clear;clc
videoIn = VideoReader('hangar_free_air.mp4');
videoOut = VideoWriter('hangar_free_airFAST.mp4','MPEG-4');
open(videoOut);
frameNum = 0;
while hasFrame(videoIn)
videoFrame = readFrame(videoIn);
frameNum = frameNum+1;
if frameNum == 10
writeVideo(videoOut,videoFrame);
frameNum = 0;
end
end
close(videoOut)

Walter Roberson
Walter Roberson on 3 Mar 2014
VideoReader() to read each frame, then process it, then VideoWriter() to save the frame if it is one that needs saving.

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