[FFmpeg-user] Problems to rescale video for a specific hardware (Beaglebone)

[meino.cramer at gmx.de]

Hi Carl


Carl Eugen Hoyos <cehoyos at ag.or.at> [12-09-24 04:34]:
>  <meino.cramer <at> gmx.de> writes:
> 
> > With only a little stuttering using 
> > 
> >     mplayer -vo x11 Video.mpg
> 
> Is there no other vo working for this hardware?
> x11 does not support hardware scaling and does not 
> allow a decent playback performance.

No currently not. I am trying to setup the kernel, which 
needs some internal patching, to support TIs firmware blob
and the adapted dss2/omaplfb drivers, but....that will
take time.

I know that -vo x11 is not the way to go, which drives me back to
my initial question:

 How can I rescale the video, that it is no longer anamorphic and the 
 pixels are square (equal length for x and y)?


> > it is possible to play the video. 
> > 
> > But: The video does not fit onto the screen and has the wrong aspect
> > ration... "egghead syndrome"...
> > 
> > (I currently have no ffmpeg combo on the Beaglebone available since it
> > does not compile natively on it due to too less memory).
> 
> It should be easy to disable some features that you don't need.

  I didnt run more than the kernel and its modules and a console.
  It was the first step I tried....

> [...]
> 
> > I also tried to use "-setdar 16:9" which is documented 
> 
> where?
> 
> > on the net 

 on the net 


> but not accepted by my ffmpeg.
> 
> (Command line and complete, uncut console output missing.)
> 
> Please see http://ffmpeg.org/ffmpeg.html#setdar_002c-setsar
> All filters need -vf filtername=value

  I will try it again and post the results here.

  Will this option results in the solution for my problems?
  (See question above).


> Carl Eugen
> 
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Meino Cramer