I was getting some messages from my daily apt-get upgrade script telling me some of my ffmpeg debs needed to be upgraded. Since I had recompiled ffmpeg from the source debs with different options, I re-ran apt-get source ffmpeg to get the latest source. When nothing downloaded, I checked the latest version with apt-cache and found it matched the version I have installed. Off to Google I went and found this thread from 9 years ago saying the bogus upgrade messages are normal and I had to increment the version number.
I still want to be notified when new versions come out (via my daily upgrade script) so I can recompile it, so I updated the version as little as possible by adding an “a” to the end of it.
In the source directory, I edited debian/changelog . The first line said
ffmpeg (3:0.cvs20070307-5ubuntu7.3) hardy-security; urgency=low
ffmpeg (3:0.cvs20070307-5ubuntu7.3a) hardy-security; urgency=low