Thanks for your answers Dan. I suppose I'l have to dive down the rabbit hole into MLT wonderland !<br><br>I'll be looking into this in the next few weeks. Actually I think that even the simple first step of disabling effects that don't work at the moment would be quite useful, so I'll start off with that.<br>
<br><div class="gmail_quote">2010/6/3 Dan Dennedy <span dir="ltr"><<a href="mailto:dan@dennedy.org">dan@dennedy.org</a>></span><br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
2010/5/31 wille <<a href="mailto:wille.yyz@gmail.com">wille.yyz@gmail.com</a>>:<br>
<div class="im">> Yes, left/right stereo balance.<br>
><br>
> It would be very useful a feature that allow split a stereo audio clip in<br>
> two mono clips.<br>
<br>
</div>Well, now you have requested two different new features when Hugh was<br>
volunteering to do some cleanup. The lack of balance/pan is already<br>
well known and on my todo list. I praise Hugh's interest in<br>
volunteering for some cleanup and would be saddened to see him<br>
distracted.<br>
<br>
One thing you can do today is to split the audio and video and add the<br>
clip again on an audio track. Then, use the channelcopy filter on both<br>
audio clips to isolate left vs. right. Finally, you can use the<br>
keyframable volume effect on each to do panning. Unfortunately, today<br>
channelcopy is exposed in Kdenlive as simply "Mono to stereo," but you<br>
can alter the effect XML file for that to add "to" and "from" channel<br>
parameters (0 is left, 1 is right). ("Mono to stereo" may seem like a<br>
strange name, but it was added specifically for the case where a clip<br>
only has a mono track and you do not want it both channels and not<br>
just left.)<br>
<br>
MLT and Kdenlive does not support the notion of a different number of<br>
channels per track. So your second request is much longer term, if<br>
ever, especially considering that I am still working on proper<br>
multichannel (>2) support. I have been doing a lot with multichannel<br>
in the past year for broadcast applications of MLT, but there are<br>
still some gaps to add it in Kdenlive. One of these is surround<br>
panning, which would also be capable of stereo.<br>
<div class="im"><br>
> 2010/5/31 Hugh Tebby <<a href="mailto:hugh.tebby@gmail.com">hugh.tebby@gmail.com</a>><br>
>><br>
>> Do you mean left/right stereo balance ? I don't think there's such an<br>
>> effect available in Sox or Ladspa... Would probably have to be done directly<br>
>> with MLT...<br>
<br>
</div>That is correct.<br>
<div class="im"><br>
>> 2010/5/31 wille <<a href="mailto:wille.yyz@gmail.com">wille.yyz@gmail.com</a>><br>
>>><br>
>>> By the way, I feel the need of a Balance audio effect or a similar tool.<br>
>>><br>
<br>
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