[nmcfarl]

No need to build it - Zencoder already does it.

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Edit: looks like they only support these audio codecs: aac, ac3, amr, eac3, mp3, vorbis, and wma

https://app.zencoder.com/docs/api/encoding/format-and-codecs...

[jon_dahl]

We've thought hard about Opus, FLAC, and ALAC. Don't be surprised if you see those soon...