I had a similar problem with my PVR-350 back in May 2011. The folks on the
MythTV list helped me troubleshoot, so I suggest looking at the mythtv-users
archive for May. In short, the audio on my 350 stopped working, even under
Windows, so I concluded that the audio HW had failed and I wound up replacing
the card.
>________________________________
>From: William Faris <[email protected]>
>To: [email protected]
>Sent: Sunday, November 13, 2011 5:18 PM
>Subject: [ivtv-users] No audio on 350
>
>
>Hello.
>
>
>Having some problems with my 350 card.
>
>
>cat /dev/video0 > video0.avi
>
>
>produces a file i can play in mplayer, the video looks great but there is no
>sound. In fact mplayer says "Audio: no sound" on stdout.
>
>
>after reading this mailing list I tried this
>
>
>cat /dev/video24 > foo.pcm but foo.pcm is always a zero length file, even
>after a minute.
>
>
>any ideas for how i can diagnose the problem?
>
>
>running
>
>
>v4l2-ctl -d /dev/video24 --log-status while the "cat /dev/video24 > foo.pcm"
>is running produces
>
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