how to crop black bars in movies on the fly?

ChamPro ulist at gs1.ubuntuforums.org
Fri Apr 15 12:23:54 UTC 2005


ZIYAD A. M. AL-BATLY Wrote: 
> On Tue, 2005-04-12 at 13:29 -0400, ChamPro wrote: 

> > I have a similar problem, but want a different outcome.

> > 

> > Unless I use -xv x11 (software zooming), my videos don't scale

> > correctly (in fullscreen or windowed). Using -xv sdl or xv (hardware

> > zooming), gives me distorted videos almost all the time.

> > 

> > I tried changing the aspect ratio from 4:3 to 16:9 in the Mplayer

> > config to no effect. And I just tried a bunch of videos using -vf

> > cropdetect. The first two values in the cropdetect output are always

> > different, but the second two are always 8:8.

> > 

> > Examples:

> > crop area: X: 0..511  Y: 0..383  (-vf crop=496:368:8:8)%  4.4% 22 0

> > 42%

> > crop area: X: 0..623  Y: 0..351  (-vf crop=608:336:8:8)%  4.4% 2 0
> 48%

> > crop area: X: 0..639  Y: 0..367  (-vf crop=624:352:8:8)% 11.7% 10 0

> > 44%

> > 

> > I have a ATI 9200 Mobility card in a Dell Inspiron 8600.

> > 

> > 

> > -- 

> > ChamPro

> > 

> (Not related to the original question, nor is a solution, but I just

> want to help when possible.)

> 

> To make the aspect ratio or resizing work in MPlayer using the x11

> driver you should pass the "-zoom" option too (it will be slow,
> though,

> as it depends totally on the CPU).

> 

> Ziyad.

Yup. That's what I use instead of the hardware zooming. And yes it does
suck up CPU cycles. But it's either that or vertically pulled video.


-- 
ChamPro




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