thumbnailMimeType property
thumbnailMimeType MIME type of the video thumbnail. If non-empty, must be one of "image/jpeg", "image/gif" and "video/mp4"
Implementation
final String thumbnailMimeType;
thumbnailMimeType MIME type of the video thumbnail. If non-empty, must be one of "image/jpeg", "image/gif" and "video/mp4"
final String thumbnailMimeType;