[Freeswitch-users] Transcoding on audio file with wav extension and encoded as 8 bit ulaw

Abaci B abaci64 at gmail.com
Sun Oct 22 20:02:31 UTC 2017


FreeSWITCH would covert the file to raw audio and then re-encode it to PCMU
if that's what's negotiated for the call, the only way to eliminate that is
to use mod_native_file
<https://freeswitch.org/confluence/display/FREESWITCH/mod_native_file> and
make the file a raw PCMU file (song.PCMU)

On Sun, Oct 22, 2017 at 7:35 PM, Aqs Younas <aqsyounas at gmail.com> wrote:

> Greetings list,
>
> Just want to confirm will trancoding happen while playing a file having
> format as below.
>
> root at debian:/opt/tmp# soxi song.wav
>
> Input File     : 'song.wav'
> Channels       : 1
> Sample Rate    : 8000
> Precision      : 14-bit
> Duration       : 00:00:55.05 = 440436 samples ~ 4129.09 CDDA sectors
> File Size      : 441k
> Bit Rate       : 64.0k
> Sample Encoding: 8-bit u-law
>
>
> If i get PCMU as only codec in invite.
>
> Here .wav is just a container wrapping PCMU audio.
>
> Best Regards,
>
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