Log in Register FAQ Memberlist Search pcHDTV Forum Index
pcHDTV Forum

pcHDTV Forum Index -> Installation/Setup -> hd-5500/MythBuntu - Scan finds nothing - Can't run dtvscan Goto page Previous  1, 2, 3, 4  Next
Post new topic  Reply to topic View previous topic :: View next topic 
PostPosted: Sun Dec 30, 2007 4:40 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




Ok thanks. I joined the Myth mailing list and sent a message out.

In the meantime is there some detailed instructions on how to check the card out using other tools? As I said I seem to be able to get a decent signal on some of the channels using dtvsignal but I don't understand how to set up xine or mplayer to watch a channel.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 5:13 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




You should be able to use mplayer to view channels. You would put a copy of the scanned channels list in a ./mplayer folder in your home directory.

This page from the MythTV wiki is for cable channels, but it has info that can be used for OTA channels.
http://www.mythtv.org/wiki/index.php/Adding_Digital_Cable_Channels_%28For_ATSC/QAM_Tuner_Cards_--_USA/Canada%29

If you type this in a terminal:
Code:
> man mplayer

You get alot of info! Here's a generic one for dvb:
Code:
mplayer dvb://[card_number@]channel [options]

The "channel" refers to the channel list. I only did this once, and don't remember the specifics. I think that card number refers to /dev/dvb/adapter# .

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 5:28 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




Ok, I looked through the history on my terminal and found the command that I used. It should look something like this:
Code:
> mplayer dvb://MVTV-DT -vo -xv


I had made a channels.conf file with azap, I believe.

Edit: You have to stop the mythbackend before you can use the card with mplayer.

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 6:28 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




Well I tried a couple of channels. I'm getting close I guess. I got mixed results. No video yet but I heard audio on one of them.

I tried 2 methods:
1. mplayer dvb://KEYE-TV -vo -xv
MPlayer 1.0rc2-4.1.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.26GHz (Family: 15, Model: 2, Stepping: 4)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing dvb://KEYE-TV.
dvb_tune Freq: 647028615
TS file format detected.
...
It hangs at this point.

2. From the link you gave me I tried the slightly different:
mplayer -nosound dvb://KEYE-DT
MPlayer 1.0rc2-4.1.3 (C) 2000-2007 MPlayer Team
CPU: Intel(R) Pentium(R) 4 CPU 2.26GHz (Family: 15, Model: 2, Stepping: 4)
CPUflags: MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled with runtime CPU detection.
mplayer: could not connect to socket
mplayer: No such file or directory
Failed to open LIRC support. You will not be able to use your remote control.

Playing dvb://KEYE-DT.
dvb_tune Freq: 647028615
TS file format detected.
VIDEO MPEG2(pid=49) NO AUDIO! NO SUBS (yet)! PROGRAM N. 0
VIDEO: MPEG2 1920x1080 (aspect 3) 29.970 fps 18700.0 kbps (2337.5 kbyte/s)
xscreensaver_disable: Could not find XScreenSaver window.
GNOME screensaver disabled
==========================================================================
Opening video decoder: [mpegpes] MPEG 1/2 Video passthrough
VDec: vo config request - 1920 x 1080 (preferred colorspace: Mpeg PES)
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
The selected video_out device is incompatible with this codec.
Try appending the scale filter to your filter list,
e.g. -vf spp,scale instead of -vf spp.
VDecoder init failed Sad
Opening video decoder: [libmpeg2] MPEG 1/2 Video decoder libmpeg2-v0.4.0b
Selected video codec: [mpeg12] vfm: libmpeg2 (MPEG-1 or 2 (libmpeg2))
==========================================================================
Audio: no sound
Starting playback...
VDec: vo config request - 1920 x 1080 (preferred colorspace: Planar YV12)
VDec: using Planar YV12 as output csp (no 0)
Movie-Aspect is 1.78:1 - prescaling to correct movie aspect.
VO: [xv] 1920x1080 => 1920x1080 Planar YV12
[ASPECT] Warning: No suitable new res found!
Source image dimensions are too high: 1920x1080 (maximum is 1024x1088)
FATAL: Cannot initialize video driver.

FATAL: Could not initialize video filters (-vf) or video output (-vo).


Exiting... (End of file)


I'll try some others...
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 6:58 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




Ok so I'm not sure why it got stuck before but now using:
mplayer dvb://STATION -vo -xv I can get the audio but no video. The error is:
VIDEO MPEG2(pid=49) AUDIO A52(pid=52) NO SUBS (yet)! PROGRAM N. 0
VIDEO: MPEG2 1920x1080 (aspect 3) 29.970 fps 14492.4 kbps (1811.5 kbyte/s)
Error opening/initializing the selected video_out (-vo) device.

Any clues what that means or how to get round it? I at least feel like the card itself is close to working.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 7:29 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




WOW! Just for the hell of it I saved my channels.conf file into /.xine/ directory and tried:
xine dvb://STATION and it worked! I got some warning about too many dropped frames and the picture wasn't ideal. Not sure why - perhaps too much other stuff going on on my desktop? but at least I'm getting somewhere and perhaps the card isn't complete crap.

So I think now I will go ahead and start building the new system which I'll install Mythbuntu on directly. Perhaps that might solve some of the other issues.

Thanks for the help Waterhead. Let me know if you think of any other tips.

Jonno.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 8:19 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




waterhead wrote:
I just found something.
https://lists.ubuntu.com/archives/kubuntu-users/2007-October/subject.html#21980

It says to open the xorg.conf file and delete the "wacom" entry.


Only just saw this. I tried it and sure enough I did not get the error in launching the frontend anymore. However I still didn't get any tv. I think the backend is not actually running.

I tried running through this: https://help.ubuntu.com/community/MythTV/Install/Troubleshooting#head-39f41f35a557cf13276f0147c2dce3bce33b5588
but it doesn't seem to fix it. At least mythbackend doesn't show up in the processes list in System Monitor.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 8:33 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




Well, at least you have some progress. Smile

You haven't said what video card/driver you are using. I was thinking that this could be a problem, especially if it's an ATI.

I was reading through the mplayer man pages, and it looks like I had the options listed wrong. It should be this:
Code:
> mplayer dvb://KEYE-TV -vo xv

The -vo option invokes the video output driver, and xv is the driver.
Code:

VIDEO OUTPUT DRIVERS (MPLAYER ONLY)
       Video output drivers are interfaces to different video output facilities.  The syntax is:

       -vo <driver1[:suboption1[=value]:...],driver2,...[,]>
              Specify a priority list of video output drivers to be used.

       If  the list has a trailing ',' MPlayer will fall back on drivers not contained in the list.  Subop‐
       tions are optional and can mostly be omitted.
       NOTE: See -vo help for a list of compiled-in video output drivers.

       EXAMPLE:
                 -vo xmga,xv,
                      Try the Matrox X11 driver, then the Xv driver, then others.
                 -vo directx:noaccel
                      Uses the DirectX driver with acceleration features turned off.

       Available video output drivers are:

       xv (X11 only)
              Uses the XVideo extension of XFree86 4.x to enable hardware  accelerated playback.If  you
              cannot  use  a  hardware  specific driver, this is probably the best option.  For information
              about what colorkey is used and how it is drawn run MPlayer with -v option and look  out  for
              the lines tagged with [xv common] at the beginning.
                 port=<number>
                      Select a specific XVideo port.
                 ck=<cur|use|set>
                      Select the source from which the colorkey is taken (default: cur).
                         cur  The default takes the colorkey currently set in Xv.
                         use  Use  but do not set the colorkey from MPlayer (use -colorkey option to change
                              it).
                         set  Same as use but also sets the supplied colorkey.
                 ck-method=<man|bg|auto>
                      Sets the colorkey drawing method (default: man).
                         man  Draw the colorkey manually (reduces flicker in some cases).
                         bg   Set the colorkey as window background.
                         auto Let Xv draw the colorkey.

You also can use Kaffeine and VLC media players to view a dvb device.

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 8:52 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




I am just using the on-board Intel 82845G chipset for video. I did have issues with that for a while until I found a bug when using Xv overlay, http://ubuntuforums.org/showthread.php?t=625168
I fixed it by changing the video depth to 24 bit from 16.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 9:09 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




I have a Dell laptop with an Intel 855 video chip, and I have never been able to use it as a frontend. I only do HDTV, and the Intel 855 is unable to handle it. I tried everything that I could find on the internet, and just gave up after a while.

The only on-board video that I know that will work for HDTV is the nVidia 6150 chip. I'm sure there are others, but Intel has not been too big on Linux development. Although the situation may be changing, if you want good video support in Linux, you want to get nVidia.

Edit: I just checked again, and lspci lists my chip as Intel Corporation 82852/855GM Integrated Graphics Device (rev 02)

Is there a newer driver for this?

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 9:16 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




waterhead wrote:
I have a Dell laptop with an Intel 855 video chip, and I have never been able to use it as a frontend. I only do HDTV, and the Intel 855 is unable to handle it. I tried everything that I could find on the internet, and just gave up after a while.

The only on-board video that I know that will work for HDTV is the nVidia 6150 chip. I'm sure there are others, but Intel has not been too big on Linux development. Although the situation may be changing, if you want good video support in Linux, you want to get nVidia.


Good to know about the nVidia chip as I was considering on-board video for my final system. Let me know if you have a motherboard to recommend.

The system I'm currently working on is just to test the card out. And boy am I learning a lot!

I still think my main problem is that I can't get the backend going (at least I don't think it's going). What is the best way to check that btw?

I just don't understand this message:
2007-12-30 22:07:33.981 Enabled verbose msgs: important general
/var/lib/mythtv/nfslockfile.lock: Permission denied
Unable to open lockfile!
Be sure that '/var/lib/mythtv' exists and that both
the directory and that file are writeable by this user.

That directory is owned by mythtv and I am a member of that group.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 9:20 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




I have the newer Intel driver (than i810). I followed these instructions: https://help.ubuntu.com/community/FixVideoResolutionHowto#head-0e3051713171cb5d1bf49dc2dc7bea24eb9ed83e
Didn't help the Xv overlay issue though.
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 9:29 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




I'm running Suse 10.2 on my laptop. I did find a newer driver here:
http://downloadcenter.intel.com/confirm.aspx?httpDown=http://downloadmirror.intel.com/13823/eng/IEGD-8.0-1.i386.rpm&agr=&ProductID=2159&DwnldId=13823&strOSs=&OSFullName=&lang=eng

It is in the rpm format. That won't work for Ubuntu, but it should for Suse. I'll see if it is an improvement.

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 9:45 pm Reply with quote
waterhead
 
Joined: 24 Apr 2005
Posts: 299




jonno wrote:
waterhead wrote:
I have a Dell laptop with an Intel 855 video chip, and I have never been able to use it as a frontend. I only do HDTV, and the Intel 855 is unable to handle it. I tried everything that I could find on the internet, and just gave up after a while.

The only on-board video that I know that will work for HDTV is the nVidia 6150 chip. I'm sure there are others, but Intel has not been too big on Linux development. Although the situation may be changing, if you want good video support in Linux, you want to get nVidia.


Good to know about the nVidia chip as I was considering on-board video for my final system. Let me know if you have a motherboard to recommend.

The system I'm currently working on is just to test the card out. And boy am I learning a lot!

I still think my main problem is that I can't get the backend going (at least I don't think it's going). What is the best way to check that btw?

I just don't understand this message:
2007-12-30 22:07:33.981 Enabled verbose msgs: important general
/var/lib/mythtv/nfslockfile.lock: Permission denied
Unable to open lockfile!
Be sure that '/var/lib/mythtv' exists and that both
the directory and that file are writeable by this user.

That directory is owned by mythtv and I am a member of that group.

First, just make a new folder higher up in the file system. /var/lib is not a good place, I don't know why MythTV puts it there. Like I said before, a /video folder always works for me. Don't forget to change the location in MythTV.

I recently built a system using an Asus barebones P1-AH2. Here is a link to a thread that I started before I bought one.
http://www.avsforum.com/avs-vb/showthread.php?t=922068

_________________
Mythbuntu 8.04
Intel D875PBZ main board
Pentium4 3.06Ghz
1024GB RAM
nVidia 6600GT
pcHDTV HD-3000
Air2PC PCI
MythTV 0.21
View user's profile Send private message
PostPosted: Sun Dec 30, 2007 10:43 pm Reply with quote
jonno
 
Joined: 28 Dec 2007
Posts: 27




waterhead wrote:

First, just make a new folder higher up in the file system. /var/lib is not a good place, I don't know why MythTV puts it there. Like I said before, a /video folder always works for me. Don't forget to change the location in MythTV.

Question - should I be logged in as a root user when using Myth? Cause don't I have to be root to create or edit files above home/user?

I tried creating a /videos directory in my /home/user directory and mythbackend does manage to start up now (I see it in System Monitor). Still no video on the frontend though.
View user's profile Send private message
hd-5500/MythBuntu - Scan finds nothing - Can't run dtvscan
  pcHDTV Forum Index -> Installation/Setup
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
All times are GMT - 7 Hours  
Page 2 of 4  
Goto page Previous  1, 2, 3, 4  Next
  
  
 Post new topic  Reply to topic  


Powered by phpBB © 2001-2003 phpBB Group
Theme created by Vjacheslav Trushkin