[gst-devel] Distorted audio capture on Vista

Francis Rammeloo francis.rammeloo at gmail.com
Sat Feb 6 16:58:44 CET 2010

directshowaudiosrc works fine on my PC at home that has Windows XP.

I modified some the ossbuild code so that the directsound plugin also
contains the directsoundsrc element:

gst-launch-0.10 directsoundsrc num-buffers=300 ! audioconvert !
audioresample ! faac ! ffmux_mp4 ! filesink location=test.mp4

It works fine on my Windows XP machine at home. I'll try it on the
Vista laptops Monday.


2010/2/5 Francis Rammeloo <francis.rammeloo at gmail.com>:
> I have been experimenting with audio capture on Windows. I use the
> following command line:
> gst-launch-0.10 dshowaudiosrc num-buffers=400 ! audioconvert !
> audioresample ! faac ! mp4mux ! filesink location=test.mp4
> I tested this on two Vista laptops using the built-in mic and in both
> cases the recorded audio was too fast and "crack"-distortions can be
> heard.
> On my Macbook Pro running Windows 7 the recording is perfect.
> The Vista machines are capable of recording good quality audio when
> using the Acer webcam software tool.
> I suspect that the issue is with the dshowaudiosrc component because I
> can also reproduce the problem using other codecs.
> Does anyone have an idea how things are going wrong? Or better, how to fix it :)
> Grts,
> Francis
> PS: I use the latest WinBuilds GStreamer distribution.

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