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Old 10-17-2010, 04:49 PM   #1
Richard Rahl
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Registered: Aug 2006
Location: Cape Breton, D'Hara
Distribution: Ubuntu, Redhat
Posts: 83

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Trying to use S-video with HVR-1600


Hello there!

I've been trying to set up my HVR-1600 card with MythTV but have run into a road block. As far as I can tell, the card is setup and the drivers are working properly ( cx18 ). The output of lspci shows:

02:06.0 Multimedia video controller: Conexant Systems, Inc. CX23418 Single-Chip MPEG-2 Encoder with Integrated Analog Video/Broadcast Audio Decoder

Unfortunately, I don't seem to be able to change channels when my cable is connected using ivtv-tune no matter what channel or frequency table I try (I live in Canada), though the S-video and audio input seem to work fine (but not through MythTV, see below).

Likewise, when I tried to scan for channels in MythTV, nothing is found, though the same cable plugged into a TV gives just regular cable as it should.

I'm not too worried about the tuners (although if you have any suggestions why it can't tune channels, let me know), since I have digital cable and would like to use the S-video anyway (and the IR blaster when I get that far). But I can't seem to get MythTV to recongize the S-video input. These are my backend settings:

Capture Card Setup:
Card type: IVTV MPEG-2 encoder card
Video device: /dev/video0
Probed Info (Hauppauge HVR-1600 [cx18]
Default Input: S-Video 1

Video sources: Configured not to use a grabber (for now)

Input connector:

Capture devide: /dev/video0
Input S-Video 1

My starting channel is not set (I suppose I would want to be S-video?) which may be a problem, as everytime I close Myth Backend Setup, I get a warning me that starting channel is not set (but I don't know how to set it to S-video). When I try to "WatchTV" but from the Front End, all I get is a "Please Wait" and then a few seconds later I return to the main menu. These are the last few logs from the front end and back end:

Back end:

2010-10-17 18:22:39.873 TVRec(1): Changing from None to WatchingLiveTV
2010-10-17 18:22:39.883 GetChannelData() failed because it could not
find channel number 'Please add' in DB for source '1'.
2010-10-17 18:22:39.887 ChannelBase(1): IsTunable(S-Video 1,Please add) Failed to find channel in DB on input '2'
2010-10-17 18:22:39.907 ChannelBase(1) Error: Setting start channel 'Please add' failed,
and we failed to find any suitible channels on any input.
2010-10-17 18:22:39.915 TVRec(1): HW Tuner: 1->1
2010-10-17 18:22:39.933 GetChannelData() failed because it could not
find channel number 'Please add' in DB for source '1'.
2010-10-17 18:22:39.948 TVRec(1) Error: Failed to set channel to Please add. Reverting to kState_None
2010-10-17 18:22:39.957 TVRec(1): Changing from WatchingLiveTV to None
2010-10-17 18:23:37.201 AutoExpire: CalcParams(): Max required Free Space: 1.0 GB w/freq: 15 min

Front end:

2010-10-17 18:22:39.850 TV: Attempting to change from None to WatchingLiveTV
2010-10-17 18:22:39.850 MythContext: Connecting to backend server: 127.0.0.1:6543 (try 1 of 1)
2010-10-17 18:22:39.850 Using protocol version 56
2010-10-17 18:22:39.871 Spawning LiveTV Recorder -- begin
2010-10-17 18:22:39.965 Spawning LiveTV Recorder -- end
2010-10-17 18:22:39.966 GetEntryAt(-1) failed.
2010-10-17 18:22:39.980 EntryToProgram(0@Wed Dec 31 20:00:00 1969) failed to get pginfo
2010-10-17 18:22:39.980 TV Error: HandleStateChange(): LiveTV not successfully started
2010-10-17 18:22:39.983 We have a RingBuffer
2010-10-17 18:22:40.043 TV Error: LiveTV not successfully started
2010-10-17 18:22:40.067 ScreenSaverX11Private: DPMS Deactivated 1
2010-10-17 18:22:40.068 ScreenSaverX11Private: DPMS Reactivated 1
2010-10-17 18:22:46.809 AudioPulseUtil: Resume Success
2010-10-17 18:22:46.810 Deleting UPnP client...

The backend logs seem to indicate that it doesn't like not having a channel to go to, though I want it to go to S-video.

In addition, I can see the tuner's output by using:

mplayer /dev/video0

I can also switch inputs using

v4l2-ctl -d /dev/video0 -i 1 (or 0 for the tuner).

I can also cat the video to a file and that works fine.

However, this *does not* work when I log in as the MythTV user. Cat to a file works fine, but trying to run it from mplayer gives me quite a few errors:

No protocol specified
XOpenDisplay() failed
Home directory /home/jason not ours.
W: core-util.c: Failed to open configuration file '/home/jason/.pulse//daemon.conf': Permission denied
W: daemon-conf.c: Failed to open configuration file: Permission denied
waitpid(): No child processes
AO: [pulse] Init failed: Internal error
Failed to initialize audio driver 'pulse'
No protocol specified
XOpenDisplay() failed
Home directory /home/jason not ours.
W: core-util.c: Failed to open configuration file '/home/jason/.pulse//daemon.conf': Permission denied
W: daemon-conf.c: Failed to open configuration file: Permission denied
AO: [alsa] 48000Hz 2ch s16le (2 bytes per sample)
Starting playback...
Could not find matching colorspace - retrying with -vf scale...
Opening video filter: [scale]
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
[swscaler @ 0x7f4c7bc0e620]using unscaled yuv420p -> rgb4 special converter
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.
Movie-Aspect is 1.33:1 - prescaling to correct movie aspect.
[swscaler @ 0x7f4c7bc0e620]No accelerated colorspace conversion found from yuv420p to rgb4.
VO: [fbdev] 720x480 => 720x540 BGR 4-bit
FATAL: Cannot initialize video driver.

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


Exiting... (End of file)

I'm not sure if perhaps it's a permission error someone since it works as my own user? It seems very strange. So ultimately it seems I have two main issues:

1. Why can't I configure MythTV to use the S-video input?
2. Why does the MythTV user get errors when trying to use the /dev/video0 device with mplayer? (Remember, cat /dev/video0 > recording.mpg works fine as both MythTV user and my user account)

A few other details:

Ubuntu version: 10.04 64-bit
MythTV version: 0.23.0+fixes24158-0ubuntu2 (from the Ubuntu repository)
Nvidia 9400gt video card (with latest nvidia drivers, 195 I believe)

Thanks for any advice you may have!
 
Old 10-17-2010, 08:51 PM   #2
mitchd123
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Registered: Jan 2009
Distribution: Ubuntu 14.04
Posts: 17

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Try running it as root to see if the problem goes away. That would at least isolate that it truly is a permission problem.

I have setup is NOT identical, so this may or may not help you. The concept should but not the specifics. I do use the composite/RCA jack so it should work in a similar fashion.

I assigned unused TV channels to the RCA to switch to them. You can also use the C key in myth-tv under live TV to switch inputs. I used a channel because that allows me to be able to record the channel when I want to record something off of RCA-1/composite.

Under mythtv-setup(on Ubuntu)

Capture Cards, I have three cards MPEG:/dev/video0, MPEG: /dev/video1 and DVB:0

DVB:0 should be similar to what you have.

Under DVB:0 I have:
Card type: DVD DTV capture card (v3.x)
DVB Device Number 0 (everything else is default)

On my DVB card I do not have a s-video or composite adapter.

Under video sources I have three entries.
One is cable, two is OverTheAir and three is RCA-1.

Under RCA I have Video source RCA-1
Listing grabber: No grabber
Channel Frequency Table default

Under Input Connections I've mapped the following:

MPEG: /dev/video0 Tuner1->Cable
MPEG:/dev/video0 S-Video->(None)
MPEG:/dev/video0 Composite 1->RCA-1
MPEG:/dev/video1 Tuner1->Cable
MPEG:/dev/video1 S-Video->(None)
MPEG:/dev/video1 Composite 1->(None)
DVB:0 (DVBInput)-> OverTheAir

When I click on RCA-1 (in your case it should be svideo):
Display Name RCA-1
Video Source RCA-1
Preset tuner for channel 97
Starting Channel 97
everything else defaults

Under Channel Editor: I created a channel 97
clicking on channel 97:

Channel Name RCA-1
Channel Number 97
Callsign 9905
Visible checked
Video Source RCA-1
TV-Format NTSC
Commercial Flagging Method Commercial Free
every else defaults

Now you can start mythtv back up. Start watching live TV

Under live tv if you hit the C key it toggle inputs. If it doesn't work, as a troubleshooting step start a terminal window switch to root, and run mythtv-backend eg: sudo su This will allow you to see error messages in the terminal window. You can do another window with mythfrontend. You can also type dmesg to check for errors

Hope this helps.
 
Old 10-18-2010, 05:40 PM   #3
Richard Rahl
Member
 
Registered: Aug 2006
Location: Cape Breton, D'Hara
Distribution: Ubuntu, Redhat
Posts: 83

Original Poster
Rep: Reputation: 15
Quote:
Originally Posted by mitchd123 View Post
Try running it as root to see if the problem goes away. That would at least isolate that it truly is a permission problem.

I have setup is NOT identical, so this may or may not help you. The concept should but not the specifics. I do use the composite/RCA jack so it should work in a similar fashion.

I assigned unused TV channels to the RCA to switch to them. You can also use the C key in myth-tv under live TV to switch inputs. I used a channel because that allows me to be able to record the channel when I want to record something off of RCA-1/composite.

Under mythtv-setup(on Ubuntu)

Capture Cards, I have three cards MPEG:/dev/video0, MPEG: /dev/video1 and DVB:0

DVB:0 should be similar to what you have.

Under DVB:0 I have:
Card type: DVD DTV capture card (v3.x)
DVB Device Number 0 (everything else is default)

On my DVB card I do not have a s-video or composite adapter.

Under video sources I have three entries.
One is cable, two is OverTheAir and three is RCA-1.

Under RCA I have Video source RCA-1
Listing grabber: No grabber
Channel Frequency Table default

Under Input Connections I've mapped the following:

MPEG: /dev/video0 Tuner1->Cable
MPEG:/dev/video0 S-Video->(None)
MPEG:/dev/video0 Composite 1->RCA-1
MPEG:/dev/video1 Tuner1->Cable
MPEG:/dev/video1 S-Video->(None)
MPEG:/dev/video1 Composite 1->(None)
DVB:0 (DVBInput)-> OverTheAir

When I click on RCA-1 (in your case it should be svideo):
Display Name RCA-1
Video Source RCA-1
Preset tuner for channel 97
Starting Channel 97
everything else defaults

Under Channel Editor: I created a channel 97
clicking on channel 97:

Channel Name RCA-1
Channel Number 97
Callsign 9905
Visible checked
Video Source RCA-1
TV-Format NTSC
Commercial Flagging Method Commercial Free
every else defaults

Now you can start mythtv back up. Start watching live TV

Under live tv if you hit the C key it toggle inputs. If it doesn't work, as a troubleshooting step start a terminal window switch to root, and run mythtv-backend eg: sudo su This will allow you to see error messages in the terminal window. You can do another window with mythfrontend. You can also type dmesg to check for errors

Hope this helps.
Hi mitchd123, thanks for your response!

Unfortunately, I'm still not having any luck.

I tried running both myth front end and backend as root to know avail.

I also tried making a "fake" channel 97 and tying it to the S-video as you suggested, although now I'm seeing this in the logs:

Backend:

2010-10-18 19:27:31.570 Channel(/dev/video0) Error: GetCurrentChannelNum(97): Failed to find Channel
2010-10-18 19:27:31.572 Channel(/dev/video0)::TuneTo(97): Error, failed to find channel.
2010-10-18 19:27:31.581 TVRec(1) Error: Failed to set channel to 97. Reverting to kState_None
2010-10-18 19:27:31.589 TVRec(1): Changing from WatchingLiveTV to None

It can't seem to find the channel although I clearly created.

I can't try to switch inputs inside of LiveTV either with the C key since I don't get that far, I simply see "Please Wait...", then it fails and goes back to the menu. Pressing C at this stage does nothing.

Let me know if there are any other ideas, thanks!
 
Old 10-19-2010, 04:37 PM   #4
Richard Rahl
Member
 
Registered: Aug 2006
Location: Cape Breton, D'Hara
Distribution: Ubuntu, Redhat
Posts: 83

Original Poster
Rep: Reputation: 15
Well what do you know!

I signed up for a Schedules Direct free trial and typed my account data into Myth TV and viola! I was able to select a channel and it tuned in my S-video input into the MythTV front end. Still don't quite understand why I can't do this *without* a Schedules Direct account (e.g. adding manual channels if I don't care about Guide information), but I'm happy it works now. Still a few additional issues:

Haven't gotten LIRC working yet with my IR blaster so I still can't "change" channels, nor does my remote control work
The OSD is "shaky", virtually unreadable. I tried a few different themes but no luck. The Guide and MythTV menus themselves work fine (could be related to MythTV version though I know someone else using the Ubuntu MythTV version and there's no shaky OCD)
I still need to test the tuners to see if they are working, but at least the video input works.

I'll keep investigating (though if you have any advice let me know), but in the meantime I'll mark this thread as solved. I can repost these questions later if I can't sort them out on my own.

Thanks for your help!
 
  


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