To upload existing media, such as video or audio recordings, first access Panopto - media.oca.ac.uk - and select the blue 'Create' button located in the upper-left corner.
From the dropdown menu, select the 'Upload Media' option, as shown in the screenshot below, and you will be prompted to select the files that you'd like to upload from your device
Upon successful upload, the video or audio recording will be available from the 'My Folder' option located in the left-hand menu, as shown in the screenshot below.
Please note that depending on the size of your upload, it may take time to process before being fully available.