You can create a text post, video post or upload, and voice note within a Space.

When creating a text post, you have the option to add the following to your post:

Here you will be able to record a video, you can also record your screen using a screen share.
Recording a video – Press the red record button to record and end your recording. You can also select Space to end the recording thereby not losing eye contact.
Recording your screen – See this article for more information about sharing your screen.

If you have a prerecorded video, you can upload it by going to the upload icon on the right of the Record button.