[Kdenlive-devel] Questions about audio effects

[Hugh Tebby]

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
>>
>>
>>
>>
>> ------------------------------------------------------------------------------
>>
>>
>> _______________________________________________
>> Kdenlive-devel mailing list
>> Kdenlive-devel at lists.sourceforge.net
>> https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
>>
>>
>
>
> --
> Wille
> http://wille.blog.br
>
>
> ------------------------------------------------------------------------------
>
>
> _______________________________________________
> Kdenlive-devel mailing list
> Kdenlive-devel at lists.sourceforge.net
> https://lists.sourceforge.net/lists/listinfo/kdenlive-devel
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.kde.org/pipermail/kdenlive/attachments/20100531/52bd23b1/attachment.html>