In MySQL you can store any binary content in a table using the BINARY or VARBINARY data type for a column. Quite all database system as such a data type. It can be used to store a full file content such as picture, video, sound,... or just a binary snippet.
Nevertheless, storing binary files in a database is considered as a bad practice, because it quite always brings to disappointments. Indeed, a file stored in database cannot be easily processed for a download, an inclusion in a HTML page, a streaming, ... . And it is quite always complicated to manipulate because of its length. Most often, a file sorted in a database is disadvantageous compared to a file stored in a directory. Its is advised to store the file name in the database base, and save the actual file in a physical directory.