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jess
n00b
Joined: 25 Oct 2004
Posts: 3
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 Posted: Mon Oct 25, 2004 5:10 pm Post subject: pvr-350, tv-out: ivtv works, mythtv doesn't |
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I have a PVR-350 card. MythTV can record TV and play it back on the computer monitor just fine, but when I try to play it back on the TV using the TV-out, it appears to be trying to use the frame buffer and do the decoding in software instead of letting the card do it.
Everything seems fine on the ivtv side. In fact, I can cat the MythTV recorded .nuv files out to /dev/video16 and they play fine. (So does the "dd if=/dev/video0 of=/dev/video16 bs=64k".)
In order to get MythTV running on the TV, I loaded the ivtv-fb module and modified my XF86Config so I have two screens (:0.0 is the monitor, :0.1 is the TV). I can run mythfronted on DISPLAY=:0.1 and the GUI shows up fine. However, when I try to watch TV there, it goes slowly and eventually gives up. Here's the output from mythfrontend:
| Code: | $ DISPLAY=:0.1 mythfrontend
2004-10-24 21:00:52 mythfrontend version: 0.15.20040525-1 www.mythtv.org
2004-10-24 21:00:52 Enabled verbose msgs : important general
2004-10-24 21:00:54 Registering Internal as a media playback plugin.
2004-10-24 21:00:54 Registering MythDVD DVD Media Handler as a media handler
2004-10-24 21:00:54 Registering MythDVD VCD Media Handler as a media handler
2004-10-24 21:03:16 Connecting to backend server: 127.0.0.1:6543 (try 1 of 5)
2004-10-24 21:03:17 Using protocol version 8
2004-10-24 21:03:17 Using protocol version 8
2004-10-24 21:03:17 Using protocol version 8
Input #0, mpeg, from 'rbuf://127.0.0.1:6543/var/mythtv/ringbuf1.nuv':
Stream #0.0: Video: mpeg2video, 480x480, 29.97 fps
Stream #0.1: Audio: mp2, 48000 Hz, stereo, 384 kb/s
2004-10-24 21:03:19 Opening OSS audio device '/dev/dsp'.
2004-10-24 21:03:19 Audio fragment size: 4096
***
* Couldn't find Xv support, falling back to non-Xv mode.
* MythTV performance will be much slower since color
* conversion and scaling will be done in software.
* Consider upgrading your video card or X server if
* you would like better performance.
2004-10-24 21:03:19 Changing from None to WatchingLiveTV
2004-10-24 21:03:21 prebuffering pause
2004-10-24 21:03:24 prebuffering pause
2004-10-24 21:03:25 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:27 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:29 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:31 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:33 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:35 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:36 Waited too long for decoder to pause
2004-10-24 21:03:37 Waited too long for decoder to pause
2004-10-24 21:03:37 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:38 Waited too long for decoder to pause
2004-10-24 21:03:39 Waited too long for decoder to pause
2004-10-24 21:03:39 Waited 2 seconds for data to become available, waiting again...
2004-10-24 21:03:39 Waited 14 seconds for data to become available, aborting
***
* Your system is not capable of displaying the
* full framerate at 720x480 resolution. Frames
* will be skipped in order to keep the audio and
* video in sync.
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To me, that looks like it is trying to decode in software and play it on the framebuffer instead of doing the equivalent of sending it out /dev/video16.
How can I get the video display to use the PVR-350's hardware decoding when playing them from MythTV? |
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jess
n00b
Joined: 25 Oct 2004
Posts: 3
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| Posted: Tue Oct 26, 2004 2:26 am Post subject: |
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Doh!
I just found the Setup > TV Settings > Playback > Use the PVR-350's TV out / MPEG Decoder setting in mythfrontend.
Looks like that was my problem. I haven't been able to test it yet, but hopefully I can give it a try in the morning. I'm pretty confident that will do it. |
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