Data sources often don't provide useful forms of information. Data and information are two different things. Data needs to be processed into useful forms: information. This sort of processing in traditional setups is usually a process such as ETL, but can also cover encoding changes for media files, natural language processing (NLP), or data mining.
Transforms are a natural part of processing data and should be an integral part of your data processing pipeline.
Elemental MediaConvert is a video transcoding service that can also broadcast. This video-on-demand service allows for broadcasting to multiscreen devices at whatever scale you need. Both audio and video are served by this service using a simple web interface.
Setting up MediaConvert is not currently available using Terraform and can only currently be set up using the API or the AWS Console. This looks to be due to change at some point in the future though, so it pays to keep tabs on the Terraform...