An event that triggers when a video file has completed transcoding.
The onVideoTranscoded() event handler runs when an uploaded video file
has finished transcoding. Video files that have been imported aren't immediately available
until the transcoding has completed.
It is fired after the onFileUploaded event, and after the transcoding has completed. The FileEvent
object contains information about the uploaded video and the upload context.
Note: Backend events don't work when previewing your site.
The uploaded file information.