The ubuntu PPA does not have builds of this gstreamer plugins for recent versions of Ubuntu

[stof]

https://launchpad.net/~strukturag/+archive/ubuntu/libde265 only has builds up to Vivid, i.e. Ubuntu 15.04

[stof]

This might be related to the fact that the last release was in 2015

[fancycode]

As this is part of upstream gstreamer and maintaned there, you should not need the PPA any longer:
https://gstreamer.freedesktop.org/documentation/de265/index.html?gi-language=c

[stof]

Then the readme should be updated to stop mentioning the PPA.

[fancycode]

Then the readme should be updated to stop mentioning the PPA.

I have updated the readme here in b018581, which file are you referring to that mentions the PPA?

[stof]

https://github.com/strukturag/gstreamer-libde265#dependencies

[fancycode]

Sorry, I was just searching for PPA 🙈

Updated in 3f64ada, thanks!