An image is just data. You just need to send data to the other micro-controller. Start with sending a "hello world". As soon as this works, then you can do the next steps.
Some questions you should ask yourself first are:
1) What do you want to do with that video?
1a) What speed do you need? Do you need realtime? How many bytes/second do you need to transmit a video of what size in realtime?
1b) Do you need to send only one way, or will there be some data in both directions? Does the sender need a confirmation, that the receiver has correctly received the data?
2) What is the nature of the hardware and connection?
2a) Centimeters away on the same board? Or through 100 meter unshielded cable?
2b) How many lines can you have to connect the two micro-controllers?
2c) How fast are both micro-controllers?
2d) Which communication techniques have some hardware support available at both micro-controllers?
And in particular, the last question means, you should learn about what kind of communication ways are even existing.
If your goal is nothing in particular, but just getting used to PIC32 and video handling, then let the people know, because then they could probably point you to some sources which help you to start.
Ric is right, it seems you have never done anything with micro-controllers. * Controlling single pins manually is of course one way to do it, but usually a pretty bad one. The first problem you will run into with your approach is: When does the first bit end, and the second bit start? When you understand that problem, you might have probably arrived at simple approaches similar or equal like I²C and SPI. The next thing is serial or parallel? And then what about confirmations, or changing the direction of the data flow? Is the speed enough? And what about the big communication solutions like Ethernet or even all the solutions which are actually made for video, ranging from VGA and DVI cables over DisplayPort and HDMI to whatever. And between those extremely simple and complex solutions there is a lot in between, which might also work for you.
But you haven't told us anything about your goals. Would you also be happy with a solution which takes 5 years to transmit a 10 second long black and white video with 1 frame/second, and 40x30 pixel size within from one micro-controller to the other one? Because so far, that's a completely sufficient solution to your task description.
PS: * I saw your last answer after submitting this post. Anyway, this post is not meant to question your skills, but to make you aware, that you are far much to vague about what you want to achieve.
post edited by moser - 2020/02/27 04:36:43