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whitlmr
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 Posted: Fri Mar 30, 2007 3:34 pm |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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After installing Myth on Fedora Core 6, four times and trying out LinuxMCE I finally tried KnoppMyth and LOVE IT. Everything works great, but every now and then when I try to play back a show, the screen goes blank and the hard drive pegs out. It stays that way for about 5 minutes and then goes back to the recordings screen. Any ideas? I'm never able to get that show to play, I just end up deleting it.
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bruce_s01
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Posted: Sat Mar 31, 2007 7:00 am |
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Joined: Tue Aug 08, 2006 7:08 pm
Posts: 561
Location:
UK
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Is there actually a file there, as there has been people having the problem of 0 length files?
What type of capture card do you have and what release of Knoppmyth are you using? I had a problem with 5A30 doing exactly what you describe, there was a valid file recorded from a Nova-T DVB-T card, but the frontend would either just exit or bomb out to the desktop. The file would playback fine using Xine.
Bruce S.
_________________
Updated 2019/10/26: AthlonII X2 265 Gigabyte GA-970A-DS3P
16Gb PC 1866 DDR3, 500GB+2TB+4TB SATA HDD,
SATA DVD-RW Asus DRW-24D5MT , NVIDIA GeForce GT1080
Hauppauage Nova-T 500, Nova-T LinHes R8.6.1
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whitlmr
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Posted: Sat Mar 31, 2007 7:35 am |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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There is a file there, but I didn't try playing it in Xine.. I will try it next time I have the problem. I"m using a PVR-150, and ran the same system with Myth on Fedora for about 2 months and never had this problem.
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marc.aronson
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Posted: Sat Mar 31, 2007 7:56 am |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
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I had the same experience and used the same workaround as Bruce under R5A30.2. The problem only occurred with recordings captured from a digital source. Never saw it happen with the analogue captures from my PVR-250. After upgrading to R5D1 I've never had the problem again. If you're on an older version of Knoppmyth, you might also try an upgrade...
Marc
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whitlmr
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Posted: Fri Apr 06, 2007 9:15 pm |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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I'm using R5E50. I tried playing back the files using the video player (copied the files into my /myth/video folder) but it just hangs up there too and I have to CTRL-ALT-BKSPC to restart the frontend.
I looked at the file sizes and they seem to be about the same size as my other recordings.. I'm really stuck now.
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bruce_s01
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Posted: Sat Apr 07, 2007 5:57 am |
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Joined: Tue Aug 08, 2006 7:08 pm
Posts: 561
Location:
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Is there any pattern to the problem recordings, like a particular channel or time?
What tuners are you using BTW.
Bruce S.
Edited to translate from Gibberish to English. 
_________________
Updated 2019/10/26: AthlonII X2 265 Gigabyte GA-970A-DS3P
16Gb PC 1866 DDR3, 500GB+2TB+4TB SATA HDD,
SATA DVD-RW Asus DRW-24D5MT , NVIDIA GeForce GT1080
Hauppauage Nova-T 500, Nova-T LinHes R8.6.1
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marc.aronson
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Posted: Sat Apr 07, 2007 8:46 am |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
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Quote: I'm using R5E50. I tried playing back the files using the video player
Hummm... Under mythtv 0.20 (which is what R5E50 is built from), videos played from the video player have the option of using the internal player. I may be reading too much into the words you are using, but from your post it sounds like this is what you are doing. If so, it is unlikely to help as it is probably the same player that is used when you watch recordings. You need to set it up so that it uses an external player such as xine, mplayer or vlc.
I suggest you start by trying to play the file totally outside myth. Give this a shot:
- Exit the myth frontend
- Bring up an X-term window: "ALT-x"
- Play the video with mplayer: "mplayer /myth/tv/filename.mpg"
- If mplayer fails, try xine: "xine /myth/tv/filename.mpg"
- If xine fails, try vlc: "vlc /myth/tv/filename.mpg"
If any of the players work with this file, you can then re-configure the video player subsystem to use that player instead of the internal player. If it fails on all 3, look at the output in the xterm window to see if the player provides any hints as to what is wrong with the file.
Marc
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whitlmr
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Posted: Sat Apr 07, 2007 9:09 am |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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I can't really detect a pattern, but it seems like it happens when there's a lot going on (ie recording two shows at once, or I'm watching something while it's recording).
I tried all the media players and none worked. Mplayer gave me this:
Playing /myth/tv/1003_20070405190000.nuv
NuppelVideo file format detected
open: No such file or directory
[MGA] Couldn't open: /dev/mga_vid
[VO-TDFXFB] This driver only supports the 3Dfx Banshee, Voodoo3 and Voodoo 5.
Opening video decoder: [ffmpeg]
Selecting video codec: [ffmjpeg]
Opening auto decoder: [mp3lib]
AUDIO: 32000Hz, 2 ch, s161e, 96.0kbig/9.38%
Selected audio codec: [mp3] afm: mp3lib (mp3lib MPEG layer-2, layer-3)
AO: [alsa] 48000Hz 2ch s161e (2 bytes per sample
A: XXXX V: XXXX A-V: XXXX ct: XXXX xXXXX/XXXX X% X% X% 0 0
----
The last line, all the values for 'XXX' are changing rapidly. It's like it's playing the file but not showing me video
Every now and then this line will pop up
[mjpeg @ 0x88ec31c]mjpeg: unsupported coding type (c1)
Thank you all for your help.
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marc.aronson
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Posted: Sat Apr 07, 2007 10:04 am |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
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Quote: Playing /myth/tv/1003_20070405190000.nuv
NuppelVideo file format detected Maybe it's because I'm on R5D1, but all of my /myth/tv files end in ".mpg", not ".nuv". Are both your tuners PVR-150's or is one of them a software-based compressor? When I run "mplayer 1043_20070121123000.mpg", I get the following output Quote: MPEG-PS file format detected
I know that the earlier versions of mythtv used the nuv file format, but I thought that was gone. It would probably be useful if you provided info on your full hardware configuration.
Marc
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whitlmr
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Posted: Sat Apr 07, 2007 10:14 am |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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You're right, one of my tuners is a PVR-150 and one is a PVR-250 (I think - it's a Hauppauge card, with a bttv chipset I just can't remember what the box at circuit city said - I'm 90% sure it was PVR-250). Is there a way I can tell what tuner a show was recorded on?
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marc.aronson
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Posted: Sat Apr 07, 2007 11:47 am |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
California
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Sounds like you've got two Hauppauge tuners, both of which have hardware-based mpeg compressors. When you look at the filename in /myth/tv the first four digits are of the form "xyyy", where "yyy" is the channel number and "x" is the source ID number. So if you have a different source tied to each tuner, you can tell which it recorded from.
I am still puzzled as to why you are still getting ".nuv" files instead of ".mpg" files. In any event, have you checked the back end logs (/var/log/mythtv/mythbackend.log*) to see if there were any interesting warnings or errors at the time the recording was created?
Marc
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whitlmr
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Posted: Sat Apr 07, 2007 1:16 pm |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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Here's an excerpt from my logfile. I recorded Mythbusters and Six Feet Under at the same time. Mythbusters was just fine, but Six Feet Under wouldn't play.
Quote: 2007-04-07 10:56:18.273 TVRec(2): Changing from None to RecordingOnly
2007-04-07 10:56:18.328 TVRec(2): HW Tuner: 2->2
2007-04-07 10:56:19.113 NVR(/dev/video1) Error: MJPEG not supported by device
2007-04-07 10:56:20.036 Started recording: Six Feet Under "Static": channel 1044 on cardid 2, sourceid 1
2007-04-07 10:56:20.065 scheduler: Started recording: Six Feet Under "Static": c hannel 1044 on cardid 2, sourceid 1
strange error flushing buffer ...
2007-04-07 11:00:02.863 TVRec(1): Changing from None to RecordingOnly
2007-04-07 11:00:02.913 TVRec(1): HW Tuner: 1->1
2007-04-07 11:00:03.401 Started recording: MythBusters "Speed Cameras": channel 1028 on cardid 1, sourceid 1
2007-04-07 11:00:03.532 scheduler: Started recording: MythBusters "Speed Cameras ": channel 1028 on cardid 1, sourceid 1
2007-04-07 11:13:24.860 TFW, Error: Write() -- IOBOUND begin cnt(28800) free(216 67)
2007-04-07 11:13:25.492 TFW, Error: Write() -- IOBOUND begin cnt(2048) free(1795 )
2007-04-07 11:13:27.546 TFW, Error: Write() -- IOBOUND end
2007-04-07 11:13:27.554 TFW, Error: Write() -- IOBOUND end
2007-04-07 11:13:35.021 Reschedule requested for id 0.
2007-04-07 11:13:38.050 Scheduled 130 items in 3.0 = 0.10 match + 2.93 place
2007-04-07 11:13:38.127 scheduler: Scheduled items: Scheduled 130 items in 3.0 = 0.10 match + 2.93 place
2007-04-07 11:30:00.731 TVRec(2): Changing from RecordingOnly to None
2007-04-07 11:30:00.785 Finished recording Six Feet Under "Static": channel 1044
2007-04-07 11:30:01.117 scheduler: Finished recording: Six Feet Under "Static": channel 1044
2007-04-07 11:30:02.102 Finished recording Six Feet Under "Static": channel 1044
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marc.aronson
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Posted: Sat Apr 07, 2007 1:19 pm |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
California
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One more thought. When you run mplayer, be sure that you are at your mythtv system's keyboard, entering into an xterm window. Some of the errors you are getting look like the result of trying to run mplayer from a remote login session (putty, ssh, etc). The problem with that approach is that you don't have access to the video output card unless you configure everything correctly and you will get various errors.
Marc
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marc.aronson
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Posted: Sat Apr 07, 2007 2:02 pm |
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Joined: Tue Jan 18, 2005 2:07 am
Posts: 1532
Location:
California
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Did you notice the message "2007-04-07 10:56:19.113 NVR(/dev/video1) Error: MJPEG not supported by device " in your log? Perhaps one of your tuner cards is mis-configured. Check in mythtv-setup that they are both configured as "MPEG-2 encoder cards (PVR-x50, PVR-500)", assuming these are both Hauppauge cards. Looks like you have one of them configured as an MJPEG card.
To get into the setup utility:
1. Exit the myth front end
2. Shutdown the backend
3. Enter "ALT-s" from the keyboard.
4. Check the configuration of all capture cards.
Marc
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whitlmr
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Posted: Sat Apr 07, 2007 6:20 pm |
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Joined: Fri Mar 30, 2007 3:22 pm
Posts: 35
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I was running mplayer, etc from the keyboard attached to mythbox.
You were right, the tuner card setup had changed (it worked previously - I have no idea how it got changed).. I set it to the PVR-x50 and rebooted. Now I get this error in the log when I try to view the second capture card
MPEGRec(/dev/video1) Error: Could not set MPEG controls
eno: Invalid argument (22)
Any ideas?
Also - is there a shortcut key to restart the frontend and backend? Like ALT-s runs mythtvsetup?
------
I have another issue which I just solved, I didn't have any sound on the second tuner. It is a bt878 card (was packaged as a pvr-250 at circuit city), and I'm using a patch cable to the line in of my sound card. If I unmute line in using alsamixer then I hear sound, but it's ALL the time, even when I'm not watching tv. I had to set alsamixer to record (capture) on line in with the volume all the way up but the mute turned on.
Thanks,
Michael
Last edited by whitlmr on Sun Apr 08, 2007 2:12 pm, edited 2 times in total.
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