Updating avconv

Is it possible to update avconv to version 10.0?

Unfortunately not, but our new system image has ffmpeg version 2.8.14 instead -- would that help?

Maybe, how do I get ffmpeg though? It's still not recognized as a command on my machine.

You have an old system image that is still using avconv. We can update your system image, but read this for how to do it and for some warnings about the effect it will have on your account.