If this test is not working, make sure to generate the test audio files by executing createaudiofiles.sh (needs FFmpeg) and serving all files, including this one, from the same directory with a web server.

Some files are expected to not exist. They cannot be generated by FFmpeg because they cannot exist by the definition of the formats or their supported levels (e.g. WAV/PCM cannot be embedded into MP4, AAC cannot have more than 6 channels).

This test script is open source and available on GitHub.