i am getting scratchy sound when i play in project monitor, when i render the file the sound is also recorded and becomes part of the rendered video

i deleted Pulse but still getting this problem

i had some issues like this and playing with the sound settings sorted it once i switched to ALSA here

slainte :-? rob

What operating system are you using, and how did you install it? At least for Intrepid (and I think Karmic) the solution that worked for me was:

- First off, I kept pulse audio, so go ahead and undo whatever was done to remove it, and make sure it's working. If it's completely gone then don't give up hope, just try reinstalling it like I did.
- I had compiled from source to upgrade to version 0.7.7, but had installed a binary from an old ppa. So in order to remove the compiled bits I removed /usr/bin/kdenlive, /usr/bin/kdenlive_render, /usr/bin/melt, (yours may be in /usr/local/bin/). Then I opened synaptic and removed kdenlive-data, kdenlive, and melt.
- Then add the sunab repository in synaptic by going to Settings > Repositories, going to the Third party software tab, clicking add and pasting "deb http://ppa.launchpad.net/sunab/ppa/ubuntu intrepid main", clicking ok, close, and reload, then adding the GPG key by running "sudo apt-key adv --recv-keys --keyserver keyserver.ubuntu.com B5115B98AA836CA8" in a terminal.
- After synaptic is refreshed, search for the kdenlive package and mark it for installation, and see if that works.

I found that there were very occasional pops while previewing it, but it rendered flawlessly. Hope this works for you. You might also try removing the old configuration in ~/.kde/share/config/kdenliverc.

i uninstalled it, and then reinstalled again,

first thing that came up was this error.

KDE detected that one or more internal sound devices were removed.
Do you want KDE to permanently forget about these devices?
This is the list of devices KDE thinks can be removed:
Capture: Creative X-Fi 20K1 Unknown (Front/WaveIn)
Output: Creative X-Fi 20K1 Unknown (Center/LFE)
Output: Creative X-Fi 20K1 Unknown (Front/WaveIn)
Output: Creative X-Fi 20K1 Unknown (IEC958 Non-audio)
Output: Creative X-Fi 20K1 Unknown (Side)
Output: Creative X-Fi 20K1 Unknown (Surround)

what do i set for this, do i keep them?

a screenshot of the error

also does anyone know how to bring up the KDE control center? when i click on the Manage Devices this control center where i can set the audio/video pops up, but im running Gnome, how to i bring it back up again to change the settings and manage the devices?

>also does anyone know how to bring up the KDE control center?

in a terminal: sysemsettings

the message in your screenshot may not affect you at all depending on your settings and what is plugged in.

After you removed pulseaudio, did you restart the computer also?

yes i restarted

i guess this is a bug in 9.10?

when i had 9.04, after i removed PulseAudio, it sounded fine, but now this scratch sound remains even after removing pulseaudio

i dont know what else to do,

yes i restarted

i guess this is a bug in 9.10?

when i had 9.04, after i removed PulseAudio, it sounded fine, but now this scratch sound remains even after removing pulseaudio

i dont know what else to do,

i think i found a bug,

i have been testing the audio with FLV files, but when i loaded a MP4 file it sounded fine, MOV files sounded fine also,

but all the FLV files sounded scratchy,

so the audio works fine with other formats, but FLV sounds scratchy,

why is that? this a decoding bug?

testing some more,

when i play a MP4 file, sounds really clean during the first few seconds of play, but once i start moving to different parts of the file, i start to get a slight garbled audio, not as bad as before, and not as bad as the FLV file sounds

@denbert,

i am running a t60 with 9.10 also and observing the same audio noise.

i hope we can work this out.

alonzo

i resolved this issue by using fedora 12 instead of ubuntu 9.10. now everything seems to work okay.

I think people are reporting 2 or more different problems here. Sometimes there is only a playback problem where the scratchiness is somewhat subtle due to buffer underruns. Sometimes there is only a playback problem due to poor support for seeking in the format and/or file - could be the format in general, could be specific to what created the file and how ffmpeg deals with it. Yet a third problem is total failure to support the audio format in FFmpeg and/or MLT resulting in gross noise. This third problem will always manifest itself when rendered and played outside Kdenlive. So, it helps to clearly describe to others which problem you think you may have, by rendering and seeing if the output is still a problem in the media player of your choice. It also helps to play the source file with ffplay in a terminal window, and also cause FFmpeg to seek around by clicking along the horizontal axis of the video window.

I think for the first problem ddennedy wrote about this can help:
http://kdenlive.org/forum/playback-pulseaudio-and-cracking-stuttering-sound