Question

在这里，我正在尝试将图像帧转换为视频。图像框包含在文件夹'folder_1'中。每当我试图运行它时，我都会收到错误：''RIFF'没有按预期显示'。下面是代码。这里可能有什么问题？是的，图像采用高动态范围格式。

files = dir('folder_1');
aviobj = avifile('a.avi'); %creating a movie object
for i=1:numel(files) %number of images to be read
    a = hdrread(file(i));  
    a = uint8(a);%convert the images into unit8 type
    M = im2frame(a);%convert the images into frames
    aviobj = addframe(aviobj,M);%add the frames to the avi object created previously
    fprintf('adding frame = %i\n', i);
end
disp('Closing movie file...')
aviobj = close(aviobj);
disp('Playing movie file...')
implay('a.avi');

Answer 1

% Create a video writer object
writerObj = VideoWriter('Video.avi');

% Set frame rate
writerObj.FrameRate = 30;

% Open video writer object and write frames sequentially
open(writerObj)

for i = 1:30                   % Some number of frames
     % Read frame
     frame = sprintf('frame %d.jpg', i);
     input = imread(frame);

     % Write frame now
     writeVideo(writerObj, input);
end

% Close the video writer object
close(writerObj);

% 'Video.avi' will be created in the folder that contains the code.

此代码可以使用。

Answer 2

files = dir('folder_1');
N=10;
nframe=3000;
writerObj = VideoWriter( 'MINALIVE .avi' );
writerObj.FrameRate = N;
open(writerObj);
figure;
for i=1:numel(files) %number of images to be read
    a = hdrread(file(i));  
    a = uint8(a);%convert the images into unit8 type
    f.cdata = a;
    f.colormap = [];
    writeVideo(writerObj,f);
end
close(writerObj);

你可以尝试一下这可能有效！

在MATLAB中将图像文件转换为AVI视频

2 个答案: