AWS Greengrass and Nano


I am planning to use AWS Greengrass Lamda for image processing logic. As I am not looking for real-time data processing, I want to segregate logic of video recording with that of image processing. My question is, how can i have two lambda functions which can be part of the Greengrass umbrella and be deployed to Jetson nano. The other question is, what is the best approach to pass the in-progress video recording to the other function, which does actual processing of the image.