I searched for this but did not get a clear answer.
As far as I understand. The .FLV container format currently supports the following audio formats:
MP3, ADPCM, Linear PCM, Nellymoser, Speex, AAC, G.711 (reserved for internal use)
Speex, however, is deprecated and has been replaced by Opus, which offers all the functionality of Speex plus additional implementations of the SILK algorithm, etc.
So does Flash support OPUS?
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