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Popping/crackling sound both in preview and when rendered

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tremebundo
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Hi guys,

I'm fairly new to Kdenlive, and I'm experiencing some trouble with the sound of my videos. It seems like Kdenlive randomly places some "pops" in the audio and I haven't been able to get rid of them. I here these sounds while previewing the video and the same sound in the same spots after the video is rendered.

For an example of what I'm talking about, have a look at the last two seconds of this video:
https://www.youtube.com/watch?v=XTy2PH0R_Vg

I've done quite a bit of googling and there seems to be several people with this problem, but many of the answers I found seem to be quite dated, and nothing I tried works :(

I'm running Kdenlive 16.12.3 on Ubuntu 16.10.

Any help will be much appreciated!
zekthedeadcow
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If you edit with proxies... when you render do you remember to disable proxies? It kinda sounds like a JACK xrun ... basically a dropout when the computer can't keep up with an audio stream so records a short blank instead... but thats a capture problem... but I've had proxy generation fail in weird ways...

If not using proxies - Make sure the artefact isn't in the original clip... and try transcoding it to one of the DNxHD formats
tremebundo
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Thanks for the answer @zekthedeadcow. I am not using proxies and the popping sound is not present in the original clip (definitely something Kdenlive is introducing).

I tried transcoding the clip to one of the DNxHD formats to no avail. Any other suggestions?

My computer is quite decent: Dell Lattitud E7250, Intel core i5, 16 GB ram.
zekthedeadcow
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My next step would be to load the clip into Ardour zoom in and see of there's anything weird going on in the waveform at that spot (it could be clipping in kdenlive but not in whatever player you use, etc.) ... and then export the wav from Ardour... and import and sync it back in kdenlive. ... actually I think you may be able to export video out of Ardour... not sure though...



Sometimes software and hardware will handle clipping audio differently than expected.... though panning is usually the the biggest headache (panning in one application can sound different than another application for various math related reasons https://en.wikipedia.org/wiki/Pan_law )
dramallama
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Hey, I wanted to reply to this since it's one of the most prominent posts that comes up when Googling this problem.

I have this problem even in the most latest Windows version 20.+ (newer than all the versions that are stated as fixed below)

The way I fixed it was went to my Windows sound device properties and changed the Sample Rate from 48000 Hz (which Kdenlive seems to have trouble with ) to 44100 Hz. To our ears there's no difference between the two, but it fixes the popping and crackling during editing playback in Kdenlive.

Screenshot:
[img]https://i.imgur.com/POxP0BQ.png
[/img]

Hope this helps!
wendigoscout
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So i do not know if your still having issues but i changed in he opengl backend to just OpenGL instead of DirectX and my audio got fixed so try that, its under settings.


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