opus - Sep 2015 - How to make libopus trivial example work?

Hi everybody,

I am trying to use the libopus trivial example I found here:

http://git.xiph.org/?p=opus.git;a=blob;f=doc/trivial_example.c

When I run it I get my new decoded file with the same size(+/-) as my
initial .wav file.
I try to start it with vlc but I can't. I think this is a problem of
header/container but I am not sure.
Does anybody have an idea where it may come from ?

Benjamin
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On 16/09/15 05:39 AM, GoudGaime . wrote:
> When I run it I get my new decoded file with the same size(+/-) as my
> initial .wav file.
> I try to start it with vlc but I can't. I think this is a problem of
> header/container but I am not sure.
Your surmise is correct. This example reads and writes raw pcm without a wav
header (see 'trivial' :/). So it treated the wav header on your input
file as audio data (it's short, so at most you'd hear a blup at the
start) and then wrote out the decoded data without a wav header, which is why
(a) vlc doesn't recognize it and (b) the size is slightly off.

You can use a utility like sox or audacity to convert the 'raw pcm' data
to wav, and vice versa.

HTH,
 -r