[MPlayer-users] Horizontal lines

[Giacomo Comes]

On Fri, Jan 13, 2006 at 07:12:14PM +0100, kunt1z wrote:
> Hi guys,
> this is my first post in this list. I've got a problem using mplayer: 
> when I see video files in full screen, I can see some fastidious 
> horizontal lines around the shapes. But, if there is an instance of 
> mplayer interrupted, the lines magically disappear!
> Here's an example:
> 
> 1)
> $mplayer test.avi    ===>    lines
> 
> 2)
> #/etc/init.d/artsd start   ===>   block /dev/dsp
> $mplayer test.avi   ===>   mplayer doesn't start because the /dev/dsp 
> device is blocked by arts daemon.
> Then I open a new shell and close the old one because is blocked by 
> mplayer. In the new shell:
> #killall artsd   ===>   release /dev/dsp
> $mplayer test.avi   ===>   no lines, it also says that the /dev/rtc file 
> is blocked (by previous mplayer instance)
> If I kill the previous instance of mplayer (the one blocked), when I 
> start a video files the lines appears again.
> 
> These horizontal lines appears ALWAYS around shapes in movement when I 
> see DVD.

What you see here is the effect of interlaced and/or telecined video.
It's absolutely normal and not a mplayer's problem.
If you use a deinterlacer filter you should remove the effect.
See the option -vf in the man page.

Giacomo