Write an RGB image to a Motion JPEG 2000 file with lossless compression.

Create an array containing data from the sample still image, peppers.png.

A = imread('peppers.png');

Create a VideoWriter object for a new video file. Use the 'Archival' profile to specify a Motion JPEG 2000 file with lossless compression.

v = VideoWriter('myFile','Archival');

Verify the type of video compression for the new file.

v.VideoCompressionMethod

ans = 
'Motion JPEG 2000'

Open the video file for writing. Then, write the image data in A to the file.

open(v)
writeVideo(v,A)

Close the video file.

close(v)

Read image and colormap data from the sample indexed image file, corn.tif.

[X,map] = imread('corn.tif');

Create a VideoWriter object for a new indexed AVI file.

v = VideoWriter('myIndexed.avi','Indexed AVI');

Assign the colormap data to the Colormap property of v.

v.Colormap = map;

Open the file for writing. After you open the file, you cannot change the properties of v.

open(v)

Write the image data in X to the video file. Then, close the file.

writeVideo(v,X)
close(v)

Convert the example file, xylophone.mp4, to an uncompressed AVI file.

reader = VideoReader('xylophone.mp4');
writer = VideoWriter('transcoded_xylophone.avi', ...
                        'Uncompressed AVI');

writer.FrameRate = reader.FrameRate;
open(writer);

while hasFrame(reader)
   img = readFrame(reader);
   writeVideo(writer,img);
end

close(writer);

Write a sequence of frames to a compressed AVI file by generating a sequence of frames, creating a video object for the file to write to, and then writing the frames to the video file.

Z = peaks;
surf(Z); 
axis tight manual 
set(gca,'nextplot','replacechildren'); 

v = VideoWriter('peaks.avi');
open(v);

for k = 1:20 
   surf(sin(2*pi*k/20)*Z,Z)
   frame = getframe(gcf);
   writeVideo(v,frame);
end

close(v);