I like to develop simple video application with transitions , which libraries touse?

hello all
I like to develop simple video application that , takes images and or text and creates video out of it and sound track.
The most important thing is that I could program simple ( very simple ) transitions between images or each N seconds
I have no experience in video and have no idea with libraries to use for this task ,
I will love to hear what do you think .
Thanks

Without a better idea of what you want, me neither, but this really isn’t Qt related. That you make your GUI in Qt, does not make questions on what other libs to use on-topic here.

I didn't get what actually you want to create.... can you be little more clear and explain more??????