[LAU] Tutorial on sidechain compression in Qtractor and a question about screencasting

Louigi Verona louigi.verona at gmail.com
Tue Aug 24 08:33:19 UTC 2010

What do you edit Theora with?

On Tue, Aug 24, 2010 at 12:22 PM, Jeremy Jongepier <jeremy at autostatic.com>wrote:

> Hello all,
> I've uploaded a new tutorial to YouTube:
> http://www.youtube.com/watch?v=pnAqk054g7E
> So using sidechain compression in Qtractor with the SC3 LADSPA plugin.
> Concerning screencasting, anybody any experience with this? For this
> tutorial I used recordMyDesktop, but it captures video to Theora, so after
> editing and uploading the quality degrades considerably. The big advantage
> of recordMyDesktop though is that it has JACK support and that the overhead
> is pretty small so I can still run my setup at a decent latency.
> I've also started playing around with FFmpeg. The video quality is waaaaay
> better if you capture to a lossless format but I'm having my thoughts on the
> audio part. I compiled FFmpeg myself with libjack-dev so it has JACK
> support. But FFmpeg apparently has troubles to keep up with latencies below
> 20ms, lots of xruns on the FFmpeg side (JACK doesn't complain though). And I
> have the feeling FFmpeg lags on the audio side.
> So I'm thinking about capturing the video part with ffmpeg and the audio
> part with jack_capture and mux the stuff later. But if anyone has any other
> suggestions, let me know.
> Best,
> Jeremy
> _______________________________________________
> Linux-audio-user mailing list
> Linux-audio-user at lists.linuxaudio.org
> http://lists.linuxaudio.org/listinfo/linux-audio-user

Louigi Verona
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