Create OOTB video transformer using FFMPEG

[jlittle-tsg]

FFMPEG can be utilized to convert different types of video files (e.g. wav, mov, avi) to mp4. Using the command ffmpeg -i .mp4 should achieve this.

The goal is to create a OC transformer to do this conversion for us.

[m-brouillette]

To be fully done from a business perspective, this enhancement would also need to include some aspect of adding the transformed video as an MP4 rendition. Whether this is on-demand or on-upload of content is up to debate (and likely a client to client config thing) but being added as a rendition is needed for this enhancement to be a step up from manual video conversion.