[Libav-user] wav VS raw

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Apr 8 15:38:08 CEST 2014

ReSearchIT Eng <researchiteng at ...> writes:

> I tried now again removing the parameters as suggested. 
> Removing them does not make any change (see below).

This is (as such) impossible, you are now encoding 
44 bytes less (which were not audio).

Do not post excerpts from ffmpeg's console output, 
always post the complete, uncut console output.
Please do not top-post here, it is considered 

> Command: ./ffmpeg.exe -loglevel debug -y -vn -i 684.wav 
> -ac 1 -ab 23850 -ar 16000 -f amr -acodec libvo_amrwbenc 
> 640bytes_fromwav_less_details.awb)

Please remove:
"-vn", makes not much sense for wav input and awb output.
"-ac 1", your input is already mono
"-ar 16000", the input sample rate is already 16k.
I suspect (but didn't test) that "-f amr -acodec libvo..." 
are also unneeded.

And please fix your quoting.

Carl Eugen

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