[FFmpeg-user] g726 adpcm SDP description how to

[Diaz Soho]

Hi All,

my audio source is : 22050 Hz, 1 channel , 16bit width
I would like to encode to g726 adpcm.
it seems workable when I use ffmpeg to encode to g726 adpcm.
but the bit rate is not 32 or  40kbps if sample rate is 22050Hz
in SDP DESCRIBE response:
a=rtpmap:97 G726-32/22050
a=rtpmap:97 G726-40/22050

can not decoded by VLC.
Since VLC can not output normal sound.


how to set the attribute for SDP when sample rate is 22050, 1 channel g726
adpcm for VLC ?
such that VLC can decode normally


Thanks!