It's implied that the message is referring to FFmpeg. Many users don't even know they are using libav when they are using "ffmpeg" (I often see this in #ffmpeg IRC and bug report tool). Users may equate the binary name ffmpeg with the project name FFmpeg and assume that FFmpeg is dead with such a message. As a developer the difference between libav and FFmpeg are obvious to you, but think in terms of the general user.
The problem is with "This program is not developed anymore". If that section were removed then I at least would be fine with the rest.
It's implied that the message is referring to FFmpeg. Many users don't even know they are using libav when they are using "ffmpeg" (I often see this in #ffmpeg IRC and bug report tool). Users may equate the binary name ffmpeg with the project name FFmpeg and assume that FFmpeg is dead with such a message. As a developer the difference between libav and FFmpeg are obvious to you, but think in terms of the general user.
The problem is with "This program is not developed anymore". If that section were removed then I at least would be fine with the rest.