Re: [Mlt-devel] generate and analyze test tone

[Carl K. <ca...@pe...>]

On Fri, Apr 19, 2013 at 11:13 PM, Dan Dennedy <da...@de...> wrote:
> On Fri, Apr 19, 2013 at 7:29 PM, Carl Karsten <ca...@pe...> wrote:
>> about 1 in 100 videos I encode confuse the encoder (likely due to some
>> corrupted dv files) and I get garbled audio.
>>
>> I am thinking if I append a soft tone at the end of the cutlist,
>> encode that too, then check for it, that will give me some test that
>> the encoder did not get confused.
>>
>> I am dead in the water trying to generate the tone.
>>
>> sox -n -d synth .1 sin 200
>> plays a nice tone.
>>
>> sox -n -d synth .1 sin 200 boop.wav
>> sox FAIL synth: no type given
>>
>> anyone know how to generate a .wav?
>>
>> or tell melt to.
>
> Since Feb. git has a ladspa producer. Does this work for you?
>
> melt -producer ladspa.1047 0=1000 1=0.5 -consumer avformat:test.wave

Perfect.

Thanks Dan.


-- 
Carl K