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Audio distorsion during playing!

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Moon200179
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Audio distorsion during playing!

Fri Nov 06, 2009 4:03 pm
Hello Guys,

I am preatty new with Kdenlive and Ubuntu , I am trying to edit a personal video, but when I load the audio and play it on Kdenlive it seems to be saturated and you can not even recognize what is that. Even when I load the video with the original audio it sounds bad.

Buuut when you render it, the sound is perfect?

I am using:

Kdenlive 0.7.6
KDE 4.3.2

Does anybody has similar problems? and solutions?
geoffrey
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Could be that you have pulseaudio installed. If you know what you are doing you could try removing pulseaudio.

Search this forum for pulseaudio and see here:

http://kdenlive.org/user-manual/troubleshooting-and-common-problems/sound-bad-and-delayed
and
http://kdenlive.org/forum/remember-remove-pulseaudio-if-using-kubuntu-karmic

Hope this helps, Geoff


psidrum
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Re: Audio distorsion during playing!

Sat Nov 07, 2009 10:53 am
i have similar problem, the audio is distorted and "crackly"
psidrum
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Re: Audio distorsion during playing!

Sat Nov 07, 2009 11:13 am
uninstalled PulseAudio, now it works fine, thnks
Moon200179
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Re: Audio distorsion during playing!

Wed Nov 11, 2009 10:49 pm
Hello Guys

After removing Pulseaudio Kdenlive works properly but all the special keys for audio control are not working anymore!

I hope that in future this bug is solved.

Kind regards
ddennedy
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I have had some success leaving PulseAudio installed and installing the libsdl1.2debian-pulseaudio package. YMMV. I am not sure why this package is not the default SDL audio backend in Ubuntu:
https://bugs.launchpad.net/ubuntu/+source/libsdl1.2/+bug/203158
https://bugs.launchpad.net/ubuntu/+source/libsdl1.2/+bug/386104

If this works for you, please vote those bugs in launchpad up!


funk
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I have libsdl1.2debian-pulseaudio, fresh install. and I have sound, but choppy. Without libsdl1.2debian-pulseaudio there was no sound. After render is now sound good. I cut .mov with mjpeg. P.
Xamiga
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Remember to install the new libsdl1.2-dev 1.2.14-1 if you are compiling mlt.
funk
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Sorry, i forgott,i use sunab packages for Ubuntu 9.10 Karmic.
ethnopunk
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This fixes the crackling. How do I fix the delay?
ddennedy
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Do you hear crackling when you play the rendered output outside of Kdenlive (in a different video player)? If so, then is this crackling in Kdenlive playback a major problem to do your work or just minor annoyance?

I can confirm that on my system with a creative sound card, I do get frequent ALSA buffer under runs during playback that causes crackling, but so far this has just been a minor nuisance, does not affect rendered output, and not so easy for me to fix in MLT.


psidrum
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hi

i think this crackling problem would be fixed if kdenlive supports Jack, Jack support should be added

the new jack is amazing,


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