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matlab 视频拆成图像帧 帧合成视频

楠蛮鬼影 2022-03-23 阅读 47
matlab

视频拆解成帧

clc;
clear;
%% 读取视频
video_file='C:\project\data\WeChat_20220311210748.mp4';
%% 指定存储文件夹 不存在则创建
folder = 'WeChat_20220311210748';
if ~exist(folder,'dir')
    mkdir(folder)
end
video=VideoReader(video_file);
frame_number=video.NumberOfFrames;
%% 分离图片 
for i=1:frame_number
    image_name=strcat('C:\project\data\',folder);
    image_name=strcat(image_name,'\');
    image_name=strcat(image_name,num2str(i));
    image_name=strcat(image_name,'.jpg');
    I=read(video,i);  %读出图片
    
    imwrite(I,image_name,'jpg');                   %写图片
    I=[];
end

帧合成视频

path = 'predict1\';                  %'predict1'为当前目录下的predict1文件夹
writerObj = VideoWriter('car.avi');   %将生成的视频保存为名称为'car.avi'的视频
open(writerObj);
for i = 1:526
   frame = imread(strcat(path,num2str(i),'.jpg'));%从文件夹中读取图像
   writeVideo(writerObj,frame);
end
close(writerObj);
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