Force hardware transcoding for test purposes

[banchev]

Is there a way to force playback hardware transcoding just to make sure it if is working properly? In my Proxmox LXC looks like it works just fine after the last tweaks but for some reason now my TV does not hardware transcode (like it used to do). Now I am looking for a way to force transcoding just to check if my intel GPU is doing it's job.

Thanks!