[mythtv-users] Two 0,15 cvs problems

Sat May 15 13:28:06 EDT 2004

>From: Gerald Schepens <schepens at shaw.ca>
>Reply-To: Discussion about mythtv <mythtv-users at mythtv.org>
>To: Discussion about mythtv <mythtv-users at mythtv.org>
>Subject: Re: [mythtv-users] Two 0,15 cvs problems
>Date: Fri, 14 May 2004 21:27:38 -0600
>
>I have a hunch that the video display problem isn't with your svideo input. 
>Try going in to live tv, switching to svideo (which will probably be 
>garbled), exiting live TV and going back in again. If your system behaves 
>like mine, the svideo input will be OK now, but the tuner will be scrambled 
>if you switch to it.

Yep, you're right.  It seems that the display is ok when I select
"Watch TV", but it gets scrambled when I change card inputs
while watching live tv.  Specifically, it looks like the screen is
stretched vertically, (with only about the top half of the actual
video showing), and repeated twice horizontally.

>
>Maybe there is something in the code that initialises the open video stream 
>when you first go into live tv that isn't done when you change inputs. I 
>don't know what that "something" is -- like I say, I couldn't get 
>test_ioctl to detect a difference between the stream behaving itself and 
>the messed-up stream, but I think there's probably something that happens 
>to the stream when it gets opened, but doesn't happen when the input source 
>is switched.

That sounds like a good theory - it fits the behavior I'm seeing.

>
>This could still be an ivtv thing, not a myth thing. Maybe the ivtv modules 
>do something special when the stream is first opened that isn't done when 
>someone just issues a command to change the input. On the other hand, you 
>and I have two different sets of ivtv drivers but the same version of 
>myth...

And... more importantly, with 0.14 of myth (and the same version
of ivtv) it doesn't happen.  (I have my main system to prove that.)

The culprit may be the combo of CVS myth and ivtv, but there's
definintely something with myth that's caused it to crop up.

>
>Mikhail D'Vane wrote:
>
>>Well, this response isn't going to be much help, but I want to let you 
>>know that
>>I see the exact same issues. (I pulled CVS at about 10:00 PM on the 13th.)
>>
>>One minor difference in our setups is that I'm using the released version 
>>of
>>ivtv (0.1.9) with a PVR-350. Other than that, our issues are identical.
>>
>>- Browse mode shows -<number> when I bring it up
>>
>>- Tuner input is fine, but S-video is really odd, with what looks like 
>>about 2x
>>zoomed into the upper left quadrant of the screen and a line displayed
>>every-other scan line (video line/black line/video line/black line and so 
>>on).
>>
>>(Mind you, I'm not complaining, as I know this is CVS and not guaranteed 
>>to
>>be tested and fully functional - that's why it's on my "testbed" system 
>>and
>>not my main.)
>>
>>Mik
>>
>>
>>>From: Gerald Schepens <schepens at shaw.ca>
>>>Reply-To: Discussion about mythtv <mythtv-users at mythtv.org>
>>>To: Discussion about mythtv <mythtv-users at mythtv.org>
>>>Subject: [mythtv-users] Two 0,15 cvs problems
>>>Date: Thu, 13 May 2004 01:11:43 -0600
>>>
>>>I am having two problems, both with live TV.
>>>
>>>A bit about my setup: I'm using the ivtv 0.10 pre 3 CVS release drivers 
>>>on my pvr350. I have cable TV connected to the card (for which I'm using 
>>>"tuner 0") as well as a cable box which is connected to the svideo input 
>>>("svideo 0"). Kernel 2.4.20-30_37.rh9.at.
>>>
>>>The first problem: Video works at first when going into live TV. I can 
>>>change channels on the tuner without problems. However when I switch 
>>>between video sources (tuner to svideo or vice versa), the picture goes 
>>>all screwy. It seems to start in the middle of the screen, and wraps 
>>>around, and the picture sort of appears but it's all distorted. Exiting 
>>>live TV and going back in fixes this. Also worth mentioning that this 
>>>problem occurs whether or not I use the svideo output on the 350 or watch 
>>>on the monitor. I also tried unchecking "deinterlace" under TV playback 
>>>options. I did some extensive fooling around with test_ioctl but wasn't 
>>>able to get the tv display to go normal. I even did a before / after dump 
>>>of test_ioctl -a, and there are no differences in the output. I'm 
>>>stumped!
>>>
>>>The second problem: browse mode on live TV fails to show me correct 
>>>information until I actually select a channel. What I mean is: I'm 
>>>watching TV on the tuner. I press Channel up (or down), and I get the 
>>>browser. Except instead of giving me the channel name, program name and 
>>>description, I just get " - 40" for the channel name and something like ( 
>>>-1440 minutes) for the program info. Yet once I select a channel I've 
>>>browsed to, the channel will change and the browse widgets will update 
>>>with the correct information -- the proper channel description and 
>>>program info appear.
>>>
>>>Is this an obscure leftover from me messing around with my database under 
>>>0.14 with tv_grab_na_dd? I have manually deleted all channel records and 
>>>program records and then run the 0.15 version of mythfilldatabase set to 
>>>use tv_grab_na_dd.
>>>
>>>Anyway, any words of wisdom will be gratefully received. Especially with 
>>>the live tv messing up when I switch sources.
>>>
>>>Gerald Schepens
>>>_______________________________________________
>>>mythtv-users mailing list
>>>mythtv-users at mythtv.org
>>>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>>
>>
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>
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