View source for AMR

{{Codec audio|id=samr}}
{{Codec audio|id=sawb}}
{{Mmwiki|AMR|AMR-NB|label2=AMR (narrow band)|AMR-WB|label3=AMR (wide band)}}
{{Wikipedia|Adaptive Multi-Rate audio codec|l1=AMR format}}

== Tutorial ==
To stream amr-nb with vlc to mobile-phone eg. next setting works (tested on few nokia & sony ericsson phones)

<pre>
transcode{vcodec=H263,width=128,height=96,vb=28,fps="12.5",acodec=samr,ab="5.25",samplerate=8000,
channels=1,venc=ffmpeg{keyint=6,strict=1,strict-rc=1}}:rtp{mp4a-latm,port-video=2244,port-audio=2242,dst=1
27.0.0.1,ttl=12,sdp=\"file:///usr/local/movies/mobile.sdp\"}</pre>

It seems that mp4a-latm somehow affects on audio-output on amr also. AMR-NB requires 8000 [[samplerate]] and only 1 channel, also if you choose incorrect audio-[[bitrate]], vlc gives you <samp>unknown codec</samp> or similar error.