The post asks if Vimeo is the only platform that can be used to upload videos as a background. The comments suggest that any platform can be used, but it requires configuring the third-party script and positioning the container as a background using absolute positioning. One community member mentions that they have a video about this on YouTube. Another community member states that they will just upload something to Vimeo for now, as speed is the priority for their proof of concept.
You can do the same thing with any platform, but needs configuring the 3rd party script, read their docs, then position the container as a background same way via position absolute, we have a video about it somewhere on YT