[Kdenlive-devel] Questions about audio effects

[wille]

Yes, left/right stereo balance.

It would be very useful a feature that allow split a stereo audio clip in
two mono clips.


2010/5/31 Hugh Tebby <hugh.tebby at gmail.com>

> Do you mean left/right stereo balance ? I don't think there's such an
> effect available in Sox or Ladspa... Would probably have to be done directly
> with MLT...
>
> 2010/5/31 wille <wille.yyz at gmail.com>
>
> By the way, I feel the need of a Balance audio effect or a similar tool.
>>
>> 2010/5/30 Hugh Tebby <hugh.tebby at gmail.com>
>>
>>> Hi everyone,
>>>
>>> I thought would look into the effects list in order to give more detailed
>>> information about the effects and maybe reorganize things a little, see what
>>> effects work, which ones don't etc.
>>>
>>> I went through all the SOX and LADSPA audio effects, and here are a few
>>> conclusions :
>>> - Many effects have either no effect or clearly don't work correctly
>>> - There are duplicates betwwen SOX, LADSPA and 'native' effects
>>>
>>> So here are a few questions :
>>> - If we remove the duplicate effects, which should be kept ? LADSPA or
>>> SOX ?
>>> - Should all effects that don't seem to work correctly be disabled ?
>>> Should the xml file actually be removed or put into a "not_working" folder ?
>>>
>>> Also, I can't quite understand how the Kdenlive interface connect to the
>>> effects. For the LADSPA, for instance, the Equalizer effect has three inputs
>>> (logain, midgain and higain), but the actual LADSPA effect (mbeq_1197) has
>>> 15 possible frequencies, and running 'analyseplugin mbeq_1197' gives me :
>>>
>>> Plugin Name: "Multiband EQ"
>>> Plugin Label: "mbeq"
>>> Plugin Unique ID: 1197
>>> Maker: "Steve Harris <steve at plugin.org.uk>"
>>> Copyright: "GPL"
>>> Must Run Real-Time: No
>>> Has activate() Function: Yes
>>> Has deativate() Function: No
>>> Has run_adding() Function: Yes
>>> Environment: Normal or Hard Real-Time
>>> Ports:  "50Hz gain (low shelving)" input, control, -70 to 30, default 0
>>>         "100Hz gain" input, control, -70 to 30, default 0
>>>         "156Hz gain" input, control, -70 to 30, default 0
>>>         "220Hz gain" input, control, -70 to 30, default 0
>>>         "311Hz gain" input, control, -70 to 30, default 0
>>>         "440Hz gain" input, control, -70 to 30, default 0
>>>         "622Hz gain" input, control, -70 to 30, default 0
>>>         "880Hz gain" input, control, -70 to 30, default 0
>>>         "1250Hz gain" input, control, -70 to 30, default 0
>>>         "1750Hz gain" input, control, -70 to 30, default 0
>>>         "2500Hz gain" input, control, -70 to 30, default 0
>>>         "3500Hz gain" input, control, -70 to 30, default 0
>>>         "5000Hz gain" input, control, -70 to 30, default 0
>>>         "10000Hz gain" input, control, -70 to 30, default 0
>>>         "20000Hz gain" input, control, -70 to 30, default 0
>>>         "Input" input, audio
>>>         "Output" output, audio
>>>         "latency" output, control
>>>
>>> So I suppose the "logain", "midgain" and "higain" must be specified
>>> somewhere, but i can find no documentation about it.
>>>
>>>
>>>
>>> Cheers,
>>> Hugh
>>>
>>>
>>>
>>>
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>>>
>>>
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>>>
>>>
>>
>>
>> --
>> Wille
>> http://wille.blog.br
>>
>>
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-- 
Wille
http://wille.blog.br
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