[MPlayer-users] Movie dissapears when OSD kicks in using -vf scale, expand, lavc

Julián Nuñez julian at proteger.org.ar
Mon Jan 31 21:08:35 CET 2005

Hi, I'm here to report a possible bug.
When I use the lavc filter together with crop and expand, as soon as an 
OSD element appears (subtitle, vomume bar, playing time) the movie 
disappears, and the only thing that can be seen is the OSD. After the 
OSD disappears, the screen remains black.
The (for me) strange thing is that it happens with certain movies and 
not with others, maybe it has something to do with colorspace. It 
happens with "Monster Inc." but not with "Baraka". It happens with pre5, 
pre6 and CVS.

Here is the command line I'm using:
mplayer -vf crop=512:0,expand=-1:384:-1:-1:1,lavc -vo mpegpes Monster.avi

After a few seconds I press the "o" key, making mplayer show the current 
playing time.
Then, when I play grab.mpg, the movie dissapears when the time appears.
I see the same effect using -vo dxr3, so I guess the problem is not in 
the vo but somewhere in lavc filter.

It used to work with mplayer 0.90 but using -vop. AFAIK it started 
happening in 1.0 series.
I'm using vanilla kernel 2.4.22, with mandrake 9.1 (gcc 3.2.2-3mdk, 
glibc 2.3.1).

I'm attaching the -v logs of both "Monster Inc" (the problem appears) 
and "Baraka" (works fine).

I wish the report is complete enough.

Take care.
Julián Nuñez.

"El verdadero valor esta en hacer sin testigos, lo que podría hacerse delante de todo el mundo"

The danger lies not in the machine itself but in the user's failure to envision
the full consequences of the instructions he gives to it."
    Neal Stephenson

What difference does it make to the dead, the orphans and the
homeless, whether the mad destruction is wrought under the name of
totalitarianism or the holy name of liberty or democracy?
    Mahatma Gandhi (1869 - 1948), "Non-Violence in Peace and War"

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