[MPlayer-users] Instead of a rectangle, the bmovl filter displays a tilted shape

Thanassis Tsiodras ttsiodras at gmail.com
Sat Mar 3 22:17:37 CET 2012

I am trying to use the bmovl filter to display various rectangular 
bitmaps during video playback. The rectangles change content during 
playback (think "annotations"), so they can't be done with the "logo" 

Unfortunately, the "bmovl" filter displays the bitmap data in a wrong 
way, resulting in a weird tilted shape.

I've raised a ticket on MPlayer's bugzilla: 

In the ticket, I attached a small tarball reproducing the problem: I 
"play" a single image in a loop (-loop 0) and feed bmovl with random 
data (from /dev/urandom). You'd expect to see a rectangle of noise - 
instead, you see a tilted shape.

Simply untar the tarball, and run "./bug.sh".

I used the latest MPlayer under Arch Linux, as well as compiling from 
latest version of the sources. Bug happens in both cases.

Any suggestions?

P.S. In the ticket, I also attached a screenshot of the "tilted" window.

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