[Kdenlive-devel] Questions about audio effects

[Javier Agustìn Fernàndez Arroyo]

i thought kdenlive was a video editor, not a multi-purpose editor :P

(just joking)


2010/5/31 wille <wille.yyz at gmail.com>

> 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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>>>>
>>>>
>>>
>>>
>>> --
>>> Wille
>>> http://wille.blog.br
>>>
>>>
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>>>
>>
>>
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>
>
> --
> Wille
> http://wille.blog.br
>
>
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