[MEncoder-users] too dark video

[Elem]

Hello everybody!

I use mencoder tro create a timelapse video from jpg shots.

I use this command:

mencoder -nosound -ovc lavc -lavcopts 
vcodec=mpeg4:mbd=2:trell:autoaspect:vqscale=3 -vf scale=1920:1080 -mf 
type=jpeg:fps=20 mf://*.JPG -o time-lapse.avi

my video is ok but very very dark... can you help me?

Here you can see some examples of pics I use for video... and the darker 
video result!

https://www.dropbox.com/sh/c8ikb0i30sx7tk3/2wfDqSJlEt


thanks!