[mythtv] Bob deinterlacing not really 2x?

[David Asher]

> Before I start digging into the code, is there any way to verify 100%
> for sure that 2x Bob is enabled and working in my mythtv build?
>
>   
If you run mythfrontend w/-v playback, when you start watching a video 
you'll see:

2006-04-19 22:49:23.126 Using deinterlace method bobdeint

Just make sure it doesn't fail out afterwards with:

2006-04-23 22:28:37.934 Video sync method can't support double framerate 
(refresh rate too low for bob deint)
*
*You can also do the math on the refresh rate and frame interval printed.

2006-04-23 22:28:37.936 Refresh rate: 16646, frame interval: 16683

refresh rate = 1000000/16646 = ~60Hz
frame interval = 1000000/16683 = ~59.94Hz

(this was from a 720p program, so bob was disabled)

an interlaced program with bob on would look like:

2006-04-23 22:18:49.000 Refresh rate: 16646, frame interval: 33366

refresh rate = 1000000/16646 = ~60Hz
frame interval = 1000000/33366 = ~29.97Hz

Beyond that you'll have to go look at the code to convince yourself its 
really doing what it says.

David.