[MPlayer-users] -vo gl not working

[Reimar Döffinger]

On 14.04.2013, at 19:27, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Kevin DeKorte <kdekorte <at> gmail.com> writes:
> 
>> What driver are you using? It fails with for me 
>> with a stock Fedora 18 install on an r600 device 
>> (ATI HD3650).
> 
> Nvidia binary driver.

Handling of threading differs greatly between OpenGL drivers. I think for nVidia the threading behaviour can be changed via an environment variable.
You might be able to reproduce the "black window" issue by setting that one up.