Open the Media tab. The Upload button takes files from your computer, and Import URL takes a direct link to a file that is already online, which is the faster route for a large archive sitting on another server. You can also drop files straight onto the library. Video, audio and images are all accepted.
Each file is processed after it lands, so it shows a status for a while before it is playable. The checklist ticks on the first file that finishes, and a file that failed to process does not count, so if the row stays open after an upload, look for a file with an error against it and upload it again. The library is per channel: a second channel on the same account has its own, empty one.
Folders are optional. A first week's library rarely needs them, and every file is searchable by name from the box at the top whether it is filed or not.





