[mythtv-users] Audio quality problems from snd_intel8x0 /dev/dsp (analog capture card)

Michael T. Dean mtdean at thirdcontact.com
Wed Aug 2 02:45:30 UTC 2006

On 07/31/2006 09:54 PM, Luke Rosenthal wrote:

>Has anyone run into problems when recording audio through the line-input
>of an onboard soundcard?  Initially I thought the problem was with mythtv,
>but the following command:
>ffmpeg -vn -ad /dev/dsp -ac 2 -ab 160 -ar 44100 -y test1.mp3
>produces shockingly bad audio too.  Despite ffmpeg reporting that it's
>sampling at 44.1kHz, it sounds like it's sampling at about 8kHz.  I've
>confirmed the audio source (line-out of old analog capture card) is
>producing good quality audio.  It's just when recorded thru the line-input
>that the quality is really bad.  Have played around with levels in
>alsamixer to no avail.
>Are there known quality issues with snd_intel8x0 ??

Try 48kHz sampling rate.


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