[Libav-user] wav VS raw

ReSearchIT Eng researchiteng at gmail.com
Tue Apr 8 16:33:44 CEST 2014

 Don't know what it means by top-post, just replying from gmail interface.

 "-f amr -acodec libvo..." -> Itried to remove, but  is a must to keep
them, it does not work without both of them. (adding only -f amr, it
defaults to amrb instead of amrwb; adding only -acodec lib.. -> gives error
it does not know the format)

The commands I used with minumum params (besides log level) were:
./ffmpeg.exe -loglevel debug -y -i 684.wav -ab 23850 -ar 16000 -f amr
-acodec libvo_amrwbenc 640bytes_fromwav_even_less_details.awb
>640bytes_fromwav_even_less_details.awb.report 2>&1

 ./ffmpeg.exe -loglevel debug -y -f s16le -ar 16000 -i 640.raw -ab 23850 -f
amr -acodec libvo_amrwbenc 640bytes_fromrRaw_min_details.awb
>640bytes_fromrRaw_min_details.awb.report 2>&1

On  https://drive.google.com/folderview?id=0B1BAL1iQSc-tN3l0Y2RzdjBvbG8 has:
The full output reports (*.txt) (~5kb each).
the reports for both cases
the input files (wav and raw)
the output files (*.awb)
as well as 2 pics from beyond compare:

Thanks again,

On Tue, Apr 8, 2014 at 4:45 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> ReSearchIT Eng <researchiteng at ...> writes:
> > Command: ./ffmpeg.exe -loglevel debug -y -vn -f s16le
> > -ac 1 -ar 16000 -acodec pcm_s16le -sample_fmt s16
> > -i 684.wav -ac 1 -ab 23850 -ar 16000 -f amr
> > -acodec libvo_amrwbenc -sample_fmt s16
> > 640bytes_fromwav.awb
> Please remove:
> "-acodec pcm_s16le", this is the only codec supported in
> fomrat s16le
> Output file option "-ac 1", the input file is mono.
> Output file option "-ar 16000" etc.
> And please remove all occurences of -sample_fmt, I am
> not sure what you intend with them, but they can't do
> any good.
> Carl Eugen
> _______________________________________________
> Libav-user mailing list
> Libav-user at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/libav-user
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