changing the resolution of video frame

i have some videos with different resolution but for some computing reason i need to change the resolution of them to same on for example 240x320. how can i do this? please help me?

[Sagar Shriram Salwe]

Hello,

To modify the quality of video is done by changing the quality of the video as per that

Control size of output video file

Specify the output video quality as an integer in the range [0,100]. Increase this value for greater video quality. However, doing so increases the file size. Decrease the value to lower video quality with a smaller file size.

The Quality property only applies when you are writing MPEG4 video files (on Windows or Mac) or when you are writing MJPEG-AVI video only files on a Mac or Linux.

It is there in https://in.mathworks.com/help/releases/R2016a/vision/ref/vision.videofilewriter-class.html

Answer 1

[Image Analyst]

Yes, just use imresize().

[nadia naji]

thank you i really appreciate your help

[Image Analyst]

Attached is a demo that does it automatically for however many frames you have in your video, and builds a resized movie as it goes along.

Answer 2

[Sagar Shriram Salwe]

The simplest method to solve this i find out:

Just go to figure created by imagesc

Open file >Export setup and change the size from auto to expected size required.

Suppost 1920x1024 points and save this configuration and again rerun the .m file without closing image.

The expected changes required for high resolution will get obtained after doing this.

Hope this will help