[MPlayer-users] Re: slightly confused by mencoder output

[Matthias Wieser]

Am Montag, 12. September 2005 06:39 schrieb RC:
> On Sun, 11 Sep 2005 22:08:25 +0200
>
> The Eye <mhellwig at gmx.at> wrote:
> > video0:width=720:height=530:
>
> A height of 530 is nonsensical.

Right.

> Since the content is interlaced, you 
> can only capture at the card's full heigh (576 PAL / 480 NTSC) or
> exactly half (or 1/4 1/8 etc).

Or any other supported resolution if you have a saa7134 card because the 
saa7134 chip has a not-so-bad deinterlacer.

> > crop=688:518:16:6,pp=fd
>
> Your output dimentions should be exact multiples of 16.

That's not so important if you don't care about the bitrate. If in doubt 
add 10% to the bitrate if your output dimentions are not multiples of 16.

I think it is much more important to take care that the vertical crop 
offset is a multiple of four which is not the case in The Eye's mencoder 
command line.


Regards,
  Matthias