[mythtv-users] Unable to get video playback in MythTV

Jason Slaughter jason at slaughter.com
Mon Oct 18 14:07:15 UTC 2004

> The widget in which you change the audio device--although editable--is 
> actually a list.  Select a different device by using the left/right 
> arrows.  The same applies for the video and vbi devices.
> If you just type a value into the box, it will not be saved.

I noticed this when I was first trying MythTV out, but this isn't the 
case here. I'm using the arrow keys to select the device, and when I go 
*back* to the configuration screen my choice has changed. Just as a 
sanity check I even checked the MySQL database and /dev/dsp1 is 
definite stored in the database. Despite all of this, when I hit "Watch 
TV" the console output shows "Opening OSS audio device '/dev/dsp'." :I

It looks like Brian and I are having exactly the same problem, so I'll 
add what I've done so far. I've installed ALSA, and it is working fine. 
I've got sound in aplay, tvtime, and xawtv. MythTV still isn't working 
with sound however. When I hit "watch TV" the picture comes up, but no 
sound. Sometimes changing channels freezes as well. The console output 
shows the following:

2004-10-18 09:50:22 Changing from WatchingLiveTV to None
2004-10-18 09:50:22 Changing from None to None
2004-10-18 09:54:35 Using protocol version 13
2004-10-18 09:54:37 Opening OSS audio device '/dev/dsp'.
2004-10-18 09:54:37 Audio fragment size: 4096
2004-10-18 09:54:37 Using XV port 53
2004-10-18 09:54:37 Changing from None to WatchingLiveTV
2004-10-18 09:54:37 Using realtime priority.
2004-10-18 09:54:40 Audio buffer overflow, audio data lost!
2004-10-18 09:54:43 Audio buffer overflow, audio data lost!
2004-10-18 09:54:45 Audio buffer overflow, audio data lost!
2004-10-18 09:54:48 Audio buffer overflow, audio data lost!

I see two things wrong here. The first is that it's trying to open the 
*OSS* audio device, when I'm running alsa now (and no oss emulation 
yet). The second is that it's still trying to open /dev/dsp even though 
the setup program and the DB have "/dev/dsp1". Any ideas?

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