使用 matlab将mp4视频转换成图像帧
clear;
lc;
% choose a video file
[filename, pathname] = uigetfile('*.mp4', 'choose a video file', 'video.mp4', 'Multiselect', 'on');
fprintf('filename = %s \npathname = %s \n\n', filename, pathname);
if ischar(filename)
fprintf('choose file success.\n\n');
video = VideoReader([pathname filename]);
len = video.NumberOfFrames; % get length of the video
fprintf('length of video : %d \n\n', len);
dir=strcat(pathname,strrep(filename,'.avi',''),'\pic');
mkdir(dir); % create folder for saving picture
fn=strrep(filename,'.mp4','');
for k = 1 : len - 1
frame = rgb2gray(read(video, k));
imwrite(frame,strcat(dir,'\',fn,'-mp4-000',int2str(k),'.bmp'),'bmp');
end
end
