[FFmpeg-user] Distorted audio in screencast

Cecil Westerhof Cecil at decebal.nl
Fri Apr 18 13:14:09 CEST 2014

Op Friday 18 Apr 2014 10:49 CEST schreef Carl Eugen Hoyos:

> Cecil Westerhof <Cecil <at> decebal.nl> writes:
>> I use this because I want to integrate some graphics 
>> in my video.
> Did you test the overlay filter?
>>> 2. Use "hw:1" instead of "plughw:1" to let ffmpeg 
>>> do the signal adaptation.
>> That gives:
>> [alsa  <at>  0x149caa0] cannot set channel count 
>> to 2 (Invalid argument) hw:1: Input/output error
> Move "-ac 1" in front of "-i"

Same error. But I found something interesting. When using the internal
web-cam for video and the external web-cam for audio the sound is much
better. So it looks like fetching video interferes with fetching

Cecil Westerhof
Senior Software Engineer
LinkedIn: http://www.linkedin.com/in/cecilwesterhof

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