Why Matlab reads video frame slowly?
8 visualizzazioni (ultimi 30 giorni)
Mostra commenti meno recenti
I try to read frames from video using the following code.
The original video play so fast, but when I try to read using Matlab, it plays so slow.
Is there any problem with Matlab? (I attached video with this question)
vidObj = VideoReader('unimore.avi');
for i=1:vidObj.NumberOfFrames
v = read(vidObj,i);
imshow(v)
end
Please kindly help, thanks.
0 Commenti
Risposta accettata
Walter Roberson
il 24 Nov 2016
Each imshow is expensive. It is more efficient to use imshow once, record the handle it returns, and update the CData property of the handle at each step. Or use one of the video player to update, such as vision.videoPlayer
https://www.mathworks.com/help/vision/ref/vision.videoplayer-class.html
Più risposte (0)
Vedere anche
Categorie
Scopri di più su Audio and Video Data in Help Center e File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!