Well there's this: https://github.com/juho-jaakkola/elgg-videos

But its currently not very actively maintained.

@yassine

It is possible to download video from your computer in your Elgg community using the plugin FILE

Here is an example of a video download from my computer without a youtube link my website. See the image below.

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Hi Yassine, 

Thanks for asking. We have built a plug-in “IZAP VIDEOS” which can manage On server / Off server videos.  Let me explain you about On server/Off server updates:

On server Video: A user can select a video from his computer, and our plug-in convert and upload it

Off server Video: User enters a URL of any site and video will be uploaded.

YouTube Video: User can upload a video from his computer, with the help of iZAP video converter subsequently that file will be uploaded at site as well as at YouTube.

You can download plug-in via accessing this URL: https://community.elgg.org/plugins/384975

Please suggest if we can help you for further assistance.

Thanks

Izap support