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thank you, i will try HE-AAC v2 or libopus but how about if i use default ffmpeg codecs ?!
– peiman F.
Commented Apr 7, 2019 at 10:54
Please read my answer again: you should not use AAC, but Opus. There's no proper Opus support for lower bitrates built into ffmpeg. Same for other speech codecs like AMR-NB. You need to compile ffmpeg with these options. It's possible to do that for Android. See: github.com/tanersener/mobile-ffmpeg
– slhck
Commented Apr 7, 2019 at 10:58
1

thank you,but is the output of this coded is .opus and it need a specific player to play sounds؟
– peiman F.
Commented Apr 7, 2019 at 11:20
It needs a player that can decode Opus, yes.
– slhck
Commented Apr 7, 2019 at 12:16

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