My app uses sox to apply some effects to an audio file on a Heroku dyno.
I added sox, libsox-fmt-mp3 and libsox-fmt-all to Aptfile using the APT buildpack. Sox is installed but MP3 files are still not working. sox -h tells me that there is no MP3 support installed.
I also tried these buildpacks but MP3 files are still not working:
- https://elements.heroku.com/buildpacks/lepinsk/heroku-buildpack-sox
- https://elements.heroku.com/buildpacks/dennisdevulder/heroku-buildpack-sox-with-mp3
Can anyone help me with this problem?