[MPlayer-users] subtitles placement - -vf expand problem

[Alain Barthélemy]

Le lundi 23 août 2004, 08:04:25 ou environ Pablo Morales <pablo.morales at abitab.com.uy> a écrit:
> Hi body..
> I've been playing aroud with that for a while, and what I do is, extract the
> subtitiles to srt, the I encode using
> for example, scale=576:320,expand=576:480:-1:-1:1 and works great for me, I
> had the same problem as yours, with -50 as stated in the man page
> did not work. This is valid if you have the subtiles in an .srt file and
> play the movie wiht mplayer -vf parameters, I use the parameters above with
> mencoder.
> 
> I almost forget, in the encoding parameters I include  autoapect:
> 
> Bytes.
> 

Thanks but it does not help me much.

This evening I tried with a "cropdetection" of 702:550:10:10

# mplayer ... -vf crop=702:550:10:10,scale=576:-2 ...

I found a scaling of 576x400

Then (after many trial):

# mencoder dvd://1 ... -vf crop=702:550:10:10,expand=0:-200:0:0,scale=576:400 ...

I managed something but it was pure hazard to have a picture without top black
border and a (too large) bottom border with the subtitles in it.

Of course there is a slight problem of scaling because there is expanding
before scaling but it was hit and try.

My question is always "how to determine the values to include in the -vf expand
option to have a border below the picture to set the subtitles in it". I don't
know but I once succeeded a long time ago. The man pages are very "light".

Thanks,

@+

> 
> ----- Original Message -----
> From: "Alain Barthélemy" <cassandre at bartydeux.be>
> To: "MPlayer user's list." <mplayer-users at mplayerhq.hu>
> Sent: Sunday, August 22, 2004 6:02 PM
> Subject: [MPlayer-users] subtitles placement - -vf expand problem
> 
> 
> > I have often to place subtitles. -slang fr is easy to use but the fonts
> are
> > often unreadable. There is maybe a way to change the fonts.
> >
> > A solution is to place the subtitles below the picture (more readable).
> But
> > then the movie is placed at the center of the image and I have an useless
> black
> > band above the movie.
> >
> > expand=0:-50:0:0
> >
> > Of course I thought I could do "expand=0:50:0:-50" to displace the image
> > vertically toward top position but I can't use negative values, only
> positive
> > values for displacements toward bottom.
> >
> > (man: x,y position of original image on the expanded image)
> >
> > How can I displace the image vertically from bottom toward top position?
> >
> > Thanks,



-- 
Alain Barthélemy
cassandre at bartydeux.be
http://bartydeux.be
Linux User #315631