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Sundtek MediaTV Pro (Europe) / issues with kaffeine and tvtime, etc.
« am: August 17, 2009, 11:42:13 Vormittag »
Hello
I have tried the sundtek mediatv pro device in analog mode using tvtime, and dvb-t mode using primarily kaffeine. In both cases I have been able to receive the channels I have access to, but I have experienced some issues.
In the case of analog tv using tvtime (tvtime -d /dev/video0) there appears to be a problem with the audio quality, because there is a (highly annoying) periodically occurring (with a few seconds interval) noise which seems to occur on every channel I've tried. I also quickly tried analog reception using mplayer (mplayer tv:// -tv driver=v4l2:device=/dev/video0), and the same noise is even more prevalent here (no longer periodic, but rather constant). This seems to be a driver issue, because I have no problem with playing audio in my system in any other context (i run Debian/Lenny, and my sound card is a Maudio 2496 card - which is well supported in linux).
When I start tvtime I get the following output;
Running tvtime 1.0.2.
Reading configuration from /etc/tvtime/tvtime.xml
Reading configuration from /home/xyz/.tvtime/tvtime.xml
>>> telling driver daemon that tvtime is opening the devicenode
videoinput: Can't set tuner audio mode: No such file or directory
videoinput: Can't set tuner audio mode: No such file or directory
videoinput: Can't set tuner audio mode: Resource temporarily unavailable
Like I said, I still get audio though with a rather unbearable periodic noise (I've tried this with the latest driver as well, 090815).
I noticed on the german side of the forum that there are options to change the audio system from internal/external and between alsa/oss, but so far I have only used the default settings (and I don't really know how to change them) and unfortunately my understanding of the german language is rather limited (so I can't really follow the conversations in the german forum).
How do you change the tuner audio mode? How can you tell if alsa is used?
Regarding kaffeine in dvb-t mode, there is another issue. Setting up the system, scanning for channels, etc., was not a problem and for a while the image and audio is perfect. However, I can't watch tv for very long (a matter of minutes most often) before I encounter some error messages in the terminal:
..
Stop parsing EIT (0:0)
EIT (0:0) : buffer overflow! Rejected
.....
The above message is repeated numerous times and the image/audio suffers from artifacts until eventually the image reception stops completely and kaffeine crashes (requiring a full system reboot for it to even want to start again). My guess is that this also is some driver issue, because I don't think reception/tv-signal quality is a problem (using dvbt in windows media center / Vista doesn't suffer from this problem).
Is this a known problem, and if so is there a workaround?
My final question is how you switch back to analog mode (what command) if you want to go from using dvb-t (/opt/bin/mediaclient -D DVBT) to analog, for example? And do you need to unmount the device first?
If so, how?
Some suggestions on how to proceed would be greatly appreciated.
I have tried the sundtek mediatv pro device in analog mode using tvtime, and dvb-t mode using primarily kaffeine. In both cases I have been able to receive the channels I have access to, but I have experienced some issues.
In the case of analog tv using tvtime (tvtime -d /dev/video0) there appears to be a problem with the audio quality, because there is a (highly annoying) periodically occurring (with a few seconds interval) noise which seems to occur on every channel I've tried. I also quickly tried analog reception using mplayer (mplayer tv:// -tv driver=v4l2:device=/dev/video0), and the same noise is even more prevalent here (no longer periodic, but rather constant). This seems to be a driver issue, because I have no problem with playing audio in my system in any other context (i run Debian/Lenny, and my sound card is a Maudio 2496 card - which is well supported in linux).
When I start tvtime I get the following output;
Running tvtime 1.0.2.
Reading configuration from /etc/tvtime/tvtime.xml
Reading configuration from /home/xyz/.tvtime/tvtime.xml
>>> telling driver daemon that tvtime is opening the devicenode
videoinput: Can't set tuner audio mode: No such file or directory
videoinput: Can't set tuner audio mode: No such file or directory
videoinput: Can't set tuner audio mode: Resource temporarily unavailable
Like I said, I still get audio though with a rather unbearable periodic noise (I've tried this with the latest driver as well, 090815).
I noticed on the german side of the forum that there are options to change the audio system from internal/external and between alsa/oss, but so far I have only used the default settings (and I don't really know how to change them) and unfortunately my understanding of the german language is rather limited (so I can't really follow the conversations in the german forum).
How do you change the tuner audio mode? How can you tell if alsa is used?
Regarding kaffeine in dvb-t mode, there is another issue. Setting up the system, scanning for channels, etc., was not a problem and for a while the image and audio is perfect. However, I can't watch tv for very long (a matter of minutes most often) before I encounter some error messages in the terminal:
..
Stop parsing EIT (0:0)
EIT (0:0) : buffer overflow! Rejected
.....
The above message is repeated numerous times and the image/audio suffers from artifacts until eventually the image reception stops completely and kaffeine crashes (requiring a full system reboot for it to even want to start again). My guess is that this also is some driver issue, because I don't think reception/tv-signal quality is a problem (using dvbt in windows media center / Vista doesn't suffer from this problem).
Is this a known problem, and if so is there a workaround?
My final question is how you switch back to analog mode (what command) if you want to go from using dvb-t (/opt/bin/mediaclient -D DVBT) to analog, for example? And do you need to unmount the device first?
If so, how?
Some suggestions on how to proceed would be greatly appreciated.