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| I also tried AMR in ffmpeg and VLC (narrow and float wide ref implem from 3GPP).
| | {{Codec audio|id=samr}} |
| '''It rocks !'''
| | {{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}} |
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| | == 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> |
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| | | 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. |
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Tutorial
To stream amr-nb with vlc to mobile-phone eg. next setting works (tested on few nokia & sony ericsson phones)
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\"}
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 unknown codec or similar error.