Pytho: build 2 functions in AWS Lambda

I need 2 python functions in AWS lambda to be called when something is uploaded into a S3 bucket. 1. Resize image On s3 event file created this lambda python function has to be called The image had to be resized in different formats (presets) The external library of [login to view URL] is used/ This library also saves the image back to s3 output directory. 2. Transcode video On s3 event file created this lambda python function has to be called The video file in s3 bucket has to be transcoded with elastic transcoder into different formats (presets) and stored in s3 output bucket Because it is the first time we use aws lambda, we need someone that knows how to program this in python and help with the configuration. If you dont have experience with AWS Lambda ... then please dont react.