[mythtv] mythtv-vid g450 directfb -- Some sucess!!

Daniel Kristjansson danielk at cuymedia.net
Thu Aug 2 16:08:13 UTC 2007

On Wed, 2007-08-01 at 23:19 -0400, Peter Hartmann wrote:
> I took Anssi Hannula's old patch to
> libs/libmythtv/videoout_directfb.cpp and tried my best to make it fit
> in the current svn for mythtv-vid.  (in a sort of monkey-see monkey-do
> way....i'm not a  programmer).  It worked!!! (sort of)   The video
> does indeed play on the tv instead of the opposite head.  see post :
> http://www.gossamer-threads.com/lists/mythtv/users/279937
> But it's still choppy...REALLY choppy.  Like one frame per 10 seconds.
> Can anybody help out?  Thanks!

DirectFB is not an optimized path so you need a much more powerful
computer and more memory to handle this than if you used XVideo.
This explains the choppiness.

DirectFB is really for building dedicated systems that don't have
a real video card so you have to use a dumb framebuffer to get any
video. When you use XVideo the video card does the color conversion
and the scaling for you so it saves a lot of CPU cycles.

-- Daniel

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