Some buttons in app designer are not responding when packaged as a standalone desktop app (.exe extension)

I am working on an image and video processing app which is working alright in the matlab app designer with .mlapp extension.However when I packaged the app as a standalone desktop app some buttons mainly associated with video processing are not working. The code for the Play button that I have used is pasted below.

[Image Analyst]

If you have any more questions, then attach your video and code to read it in (the whole .mlapp file) with the paperclip icon after you read this:

TUTORIAL: How to ask a question (on Answers) and get a fast answer