Difference between revisions of "Watch tv using a hauppauge pvr usb 2 and ubuntu 11.10"
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To [[watch TV]] using my Hauppauge PVR USB 2 tuner and Ubuntu 11.10 | To [[watch TV]] using my Hauppauge PVR USB 2 tuner and Ubuntu 11.10 | ||
* install Ubuntu 11.10 | * install Ubuntu 11.10 | ||
* [[install]] [[vlc]] | * [[install]] [[vlc]] | ||
+ | |||
+ | = Get a video device = | ||
+ | Before doing anything about watching TV, it is important that you see a video device in your operating system and can use this. | ||
* find out which video devices you have. Video devices can come e.g. from your [[webcam]] and - when we have it connected - from your TV tuner: | * find out which video devices you have. Video devices can come e.g. from your [[webcam]] and - when we have it connected - from your TV tuner: | ||
$ ls /dev/video* | $ ls /dev/video* | ||
Line 31: | Line 36: | ||
It happens sometimes that you see nothing but a green screen after starting | It happens sometimes that you see nothing but a green screen after starting | ||
mplayer /dev/video''x'' | mplayer /dev/video''x'' | ||
− | In this case it helped me to reboot my computer. | + | In this case it helped me to reboot my computer. Or detect which processes are accessing /dev/video and kill them: |
+ | lsof | grep video | ||
= Switching channels = | = Switching channels = | ||
Line 43: | Line 49: | ||
sudo su - | sudo su - | ||
echo "104300000" > /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val | echo "104300000" > /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val | ||
+ | |||
+ | = Get TV software = | ||
+ | You do not want to look up frequencies and use the command line just to switch to another channel. So get a TV watching application. I chose [[xawtv]]. | ||
+ | * Download xawtv's latest version from http://linuxtv.org/downloads/xawtv/ | ||
+ | * [[build]] it | ||
+ | * run | ||
+ | mplayer /dev/video0 | ||
+ | * in another console run | ||
+ | scantv -o .xawtv | ||
= See also = | = See also = | ||
* [[watch TV]] | * [[watch TV]] | ||
+ | * [[sample .xawtv file for Germany]] |
Latest revision as of 15:17, 11 December 2011
Contents
To watch TV using my Hauppauge PVR USB 2 tuner and Ubuntu 11.10
Get a video device
Before doing anything about watching TV, it is important that you see a video device in your operating system and can use this.
- find out which video devices you have. Video devices can come e.g. from your webcam and - when we have it connected - from your TV tuner:
$ ls /dev/video* ls: cannot access /dev/video*: No such file or directory
- in this case we do not have a webcam or any other video device seen by the system.
- plug your tuner into a USB slot, connect the antenna cable and connect power
- find out which video device has been added:
$ ls /dev/video* /dev/video0
- in this case, /dev/video0 is our video device
- kill all processes that block your video device:
$ lsof | grep video nautilus 1769 bootstick mem REG 8,34 46824 3691 /usr/lib/libgstvideo-0.10.so.0.24.0
- ok, there is a process nautilus blocking the video device. Kill it
$ killall nautilus
- verify it is killed
$ killall nautilus nautilus: no process found
- verify there is no other process
$ lsof | grep video $
- good
- install a video viewer
sudo apt-get install mplayer
- now it is time to see if there is any video signal at all from the TV tuner. Expect to see snow or a TV channel with this command:
mplayer /dev/video0
What can go wrong
It happens sometimes that you see nothing but a green screen after starting
mplayer /dev/videox
In this case it helped me to reboot my computer. Or detect which processes are accessing /dev/video and kill them:
lsof | grep video
Switching channels
You can now switch TV channels if you know the frequency of your stations. For example if i want to watch hr in Germany I use
echo "55250000" > /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val
What can go wrong for switching channels
sudo echo "104300000" > /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val bash: /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val: Permission denied
In this case sudo does not work for all the line. You have to use
sudo su - echo "104300000" > /sys/class/pvrusb2/sn-8567330/ctl_frequency/cur_val
Get TV software
You do not want to look up frequencies and use the command line just to switch to another channel. So get a TV watching application. I chose xawtv.
- Download xawtv's latest version from http://linuxtv.org/downloads/xawtv/
- build it
- run
mplayer /dev/video0
- in another console run
scantv -o .xawtv