thumbnail
The permissions for the thumbnail_config object. (documented below) The content_config object specifies information about the Amazon S3 bucket in which you want Elastic Transcoder to save transcoded files and playlists: which bucket to use, and the storage class that you want to assign to the files. If you specify values for content_config, you must also specify values for thumbnail_config. If you specify values for content_config and thumbnail_config, omit the output_bucket object.