HTML5 Audio: Which formats? Ditch Ogg Vorbis in favor of Ogg Opus? Is MP3 still needed?

Posted by phoibos on Pro Webmasters See other posts from Pro Webmasters or by phoibos
Published on 2012-11-11T13:05:03Z Indexed on 2012/11/11 17:14 UTC
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audio

I'm currently working on a website which has to stream audio files. Since bandwidth is always an issue, the file size should be as small as possible. I wonder what audio formats I should provide.

MP3 - Most common format but low quality, I don't know if it's even required, since AAC is well supported by the browsers incapable of playing free codecs
MP4 AAC - Nice quality / small filesize, supported by Safari / Mobile Devices / IE9 / Flash / Chrome
A free codec - well, until recently, there only was Ogg Vorbis, but Ogg Opus is standardized now and it's really good!

Questions:

Is it time yet to use Opus instead if Vorbis? Firefox supports Opus since version 15, and Opera has support on its roadmap - I guess Chrome will follow in the future too.
Do I still have to provide an MP3 file?

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