Many of the entries in the "applications" list are dead
This page hasn't been checked for freshness in at least a decade: https://gstreamer.freedesktop.org/apps/
- Arista Transcoder: seems to point to a new, different software now -- original is at https://github.com/danielgtaylor/arista and dead. That domain was even porn for a time, https://github.com/danielgtaylor/arista/issues/176
- Banshee: unreachable, the domain name doesn't have any records associated to it
- Buzztrax: your link is 404, https://www.buzztrax.org/ works
- flumotion: cPanel 404 page
- GstLAL: unreachable, no DNS record
- Kaffeine: link is wrong but redirects for now
- Landell: I don't know what that server speaks but it's not HTTP
- Listen: redirects to a casino website, in Korean
- Minirok: server doesn't respond
- TANDBERG Movi: dead link, Tandberg has been acquired by Cisco
- Parlatype: unreachable, redirects then "No route to host"
- Quotidian: domain is now something else
- Scenic: unreachable, no DNS records
- Songbird: "buy this domain" page
- Permovi: 404, Novell replaced their wiki, then was acquired 3 times
The rest are in various states of abandonment. Over all, this page might have been intended to show the wide use of Gstreamer but right now just gives the idea that the Gstreamer project is dead, as a visitor would have to follow many links to find anything active, if she doesn't hit malware first. If it isn't going to be maintained I suggest removing it entirely.