bpm-tools build is a custom vulcan build downloaded from (http://www.pogo.org.uk/~mark/bpm-tools/releases/bpm-tools-0.3.tar.gz)
It doesn't do anything else, so to actually compile your app you should use buildpack-bpm-tag to combine it with a real buildpack.
To use this buildpack, you should prepare .buildpacks file that contains this buildpack url and your real buildpack url.
$ ls .buildpacks ... $ cat .buildpacks https://github.com/soft-dave/buildpack-bpm-tag $ heroku create --buildpack https://github.com/soft-dave/buildpack-bpm-tag $ git push heroku master ...
You can verify installing ffmpeg by following command.
$ heroku run "bpm-tag"
Copy the snippet above into CLI.