Playing videos in Matlab

Hi Guys

I wantt help fpr following code instade of reading the frames of videos i want to read video as normal playing

load('Detector.mat');
vidReader = VideoReader('004.avi');
vidPlayer = vision.DeployableVideoPlayer;
i = 1;
results = struct('Boxes',[],'Scores',[]);
while(hasFrame(vidReader)) 
I = readFrame(vidReader); 
step(vidPlayer,I);
 i = i+1;

[Vivek Khokar]

I used vision.VideoPlaye to play video but I got the following error! Please Help Me Out, ASAP!!!

Unable to resolve the name vision.VideoPlayer. // error

my code is:

    % Create two video players, one to display the video,
        % and one to display the foreground mask.
        obj.maskPlayer = vision.VideoPlayer('Position', [740, 400, 700, 400]);
        obj.videoPlayer = vision.VideoPlayer('Position', [20, 400, 700, 400]);

[Masumi Morishige]

I met the same error and solved it by installing "Computer Vision Toolbox" from "HOME > Add-Ons".

Although it's written in Japanese, I will share the article just in case.

https://qiita.com/umi_mori/items/9263b158b1d603d4e44b

I'm happy if this helps you.

[Lusanni Acosta-Rodriguez]

Thanks Masumi! After installing the "Computer Vision Toolbox" the error went away. Now I am facing another one. But, with respect to the Vision Toolbox is good!

Again, thanks!

Answer 1

[Subhadeep Koley]

Hi, your code is almost correct only you have add some pause() between every frame otherwise you won’t be able to see all the frames. The pause time should be ideally 1/FrameRate to view the video in its original speed. Refer to the code below.

vidReader = VideoReader('rhinos.avi'); % Read your video here
vidPlayer = vision.DeployableVideoPlayer;
while(hasFrame(vidReader))
    I = readFrame(vidReader);
    step(vidPlayer,I);
    pause((1/vidReader.FrameRate)); % pause of value (1/FrameRate)
end

Or else if you only want to play the video you can use the function implay().

implay('rhinos.avi'); % Read your video here

And hit the ‘Play’ button.

Hope this helps!