[MPlayer-users] (MKV/DVD) why subtitles are forced?

[Reimar Döffinger]

On Tue, Oct 05, 2010 at 06:17:01PM +0200, arnaud tonda wrote:
> i have tried to investigate in the code but some parts are not clear for me.
> i have seen that if you deactivate subtitles or choose one of them,  some
> variables of the spudec handler aren't modified, more precisely "pal_heigth"
> and pal_width are set to 0.
> 
> if mplayer is launched without any subtitle specific options these values
> aren't set to 0.

The DVDNAV menu images are stored as a completely ordinary subtitle track.
So if you set any subtitle options that cause this track not to be player
(like -nosub or -slang with a language that does not exist for the menu)
you'll get those white blocks instead.
There are more bugs in the DVD handling code, but so far I can't be bothered
to try to fix them (it tends to be a huge effort and I personally just don't
really mind).