Thanks for the advice guys! Unfortunately, I still haven't got it sorted....
Pim:
I have updated the channel frequencies using mythweb, putting them in Khz. This hasn't fixed my problem, but at least when I get the recording problem sorted, the channels should be setup correctly, so thanks for the advice!
Mike:
Sorry, I should have said I am using version 0.16 of MythTV, but in RPM format from atrpms.net. I have tried setting the size to 352x240 (as you may have seen from the log output previously it was set to 480x480) however this hasn't solved the problem:
2005-01-11 15:50:19 TuneToFrequency(11636)
2005-01-11 15:50:19 Changing from None to RecordingOnly
2005-01-11 15:50:19 Using profile 'Default' to record
2005-01-11 15:50:19 Commercial Detection initialized: width = 352, height = 240, fps = 25, method = 1
NVR: v4l2: format set, getting yuyv from v4l, converting
[1]+ Segmentation fault mythbackend -v all
Just so I'm sure, I changed the width and height in the "codecparams" table of the mythtv database, for the profiles that I'm using (in this case, "Default"). Are there any other width/height capture sizes that have any effect here, that maybe are still set to something bigger and are causing a problem?
Thanks for your help, -= El =-
Mike Isely wrote:
Which version of mythtv is this? CVS? 0.16?
I just hit what may be the same problem in setting up an ATI TV Wonder last night - also cx88xx based. The yuyv conversion is a piece of logic that changes the frame buffer format on the fly. It's definitely there, but it also stack allocates a large buffer to do the conversion and from looking at the source I suspect the buffer may be too small for the incoming frame buffer size. I'm not entirely sure of the specifics yet, but I did note that the "default" size was 352x240 and when I changed the software encoder's setting to 352x240 the segmentation fault went away and Live TV started working. Try changing that and see if it helps.
This is the bug I just wrote up about the problem:
http://www.mythtv.org/bugs/show_bug.cgi?id=189
By the way, if/when you do get LiveTV working, are the colors trashed and the picture washed out? That's a second problem I noticed. It appears that the contrast has to be backed off to around 35%, and the Hue setting seems to have been implemented to think that the Hue V4L2 parameter is an unsigned char when in fact it's behaving like a signed char. Setting Hue to 0 or 100% will fix the colors. (Set the _recording_ Hue, not the playback Hue.)
-Mike
On Tue, 11 Jan 2005, El Draper wrote:
Hi guys, I've been setting up a Linux PVR using MythTV on a Fedora Core 3 machine, with a recompiled 2.6.9 kernel (to fix some wifi issues). I have a Hauppauge WinTV PCI tv card (CX88) and have successfully got the program Zapping working with it, and capturing video etc. I have configured MythTV, grabbed program listings etc, setup some channels; however whenever the backend starts to record something I've setup to be recorded, I get the following error:
2005-01-11 02:39:17 Changing from None to RecordingOnly 2005-01-11 02:39:17 Using profile 'Default' to record 2005-01-11 02:39:17 Commercial Detection initialized: width = 480, height = 480, fps = 25, method = 1 NVR: v4l2: format set, getting yuyv from v4l, converting
[2]+ Segmentation fault mythbackend -v all
Now (from what little I know) yuyv is some form of codec? Could it be that Myth has a missing dependency for this on my machine that is causing this error? I have noticed that in trying to setup my channels with the correct frequencies, I don't see anywhere for the exact frequency in Mhz ("finetune" and "freqid" are int's). How can I setup a channel with an exact frequency in Mhz? Could this be causing the above problem when trying to record?
I've searched around, so far unsuccessfully on this problem, so any help you guys can offer would be great as I'm now a little stuck :-)
Thanks!
-= El =- _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
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