Bug Report Blackscreen in record

[zgegzgeg06]

Hello,
I record a part of Garry's Mod and after the rendering, i've the sound of microphone and the game.
But I haven't the game video just a black screen.
(sorry i don't speak english, I hope than is good writed.)
Thanks

 

[Nexmax]

are you speak french? and me too her does it to me but I'm on mac