How to make number of frames equal of several videos having different length and having different number of frames?
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I have several videos of different lengths. Correspondilgy, every video has got different number of frames. I want to make every video equal in terms of number of frames. For eg. I have five videos having 21, 28, 8, 104 and 62 frames respectively. I want to make number of frames 32 for every video. Is there any solution for this problem?
Ameer Hamza on 21 Oct 2020
This shows how to write the video with fixed number of frames
num_frames = 32; % number of frames in out.mp4
TotalTime = 2; % out.mp4 will be 2 seconds
v = VideoReader('xylophone.mp4');
frames = read(v, [1 inf]);
frames = permute(frames, [4 1 2 3]);
frames_out = uint8(interp1(linspace(0,1,size(frames,1)), double(frames), linspace(0,1,num_frames)));
frames_out = permute(frames_out, [2 3 4 1]);
V = VideoWriter('out.mp4', 'MPEG-4');
V.FrameRate = 32/TotalTime;