[mythtv] Interlaced vs. Progressive
David Asher
david.asher at caviumnetworks.com
Sun Mar 5 04:21:40 UTC 2006
I tried without OpenGL Vsync and its a little worse. With openglvsync
the flash is confined to the upper .5inch of the screen. Without
openglvsync its random where the blue flash is. Not surprising, I
guess. The vsync must keep it close to a refresh boundary.
Sigh.
David.
David Asher wrote:
> Ok, I forgot the names for the two were very similar.
> In that case I think I am using chromakeying. I'm using XV with a
> Nvidia 5200, no twinview. I definitely don't get the "Couldn't get
> the color key color" message.
>
> Also, I'm using bob deinterlace. So it sounds like you're saying I
> should need to set needrepaint on enable/disable of deinterlacing --
> but that's what is causing the flashing. The needrepaint variable
> forces a DrawUnusedRects with sync off... could it be opengl vsync
> mixed with sync off that's hurting me?
>
> Hmmm... not sure what my next step here should be.
>
> David.
>
> PS. I apologize about the HTML. I've tried to turn off HTML, let me
> know if I didn't get it right.
>
> Daniel Kristjansson wrote:
>> On Sat, 2006-03-04 at 19:46 -0500, David Asher wrote:
>>
>>> No, I don't get any warning or information implying something bad is
>>> happening -- even with -v playback. I definitely am not using
>>> chromakeying right now -- though I plan to try it soon.
>>>
>>> Should I make it "needrepaint = chroma_osd != NULL;" (or something
>>> like that)?
>>>
>>
>> I don't mean chromakey osd, I mean chromakeying. This is when the
>> video is displayed only where a certain chromakey color is on screen.
>> When chromakeying is enabled you can drag a window from
>> another application with the chromakey color over the video window
>> and the video will show through. If your card is capable of
>> chromakeying MythTV will use the feature, and if you are using
>> XVideo and your card does not support chromakeying you will get
>> a warning. However, if you have a 'twinview' setup, chromakeying
>> may only be actually supported on one of the displays, then you
>> get nasty chromakey blinking.
>>
>> -- Daniel
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