[mythtv-users] Two 0,15 cvs problems

Gerald Schepens schepens at shaw.ca
Sun May 16 03:38:29 EDT 2004


This is the same garble-mode my machine experiences.  Any ideas on what 
the situation is with this?

Mikhail D'Vane wrote:

>> 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.
>



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