[OSX] Sorry, I don't know how to move the slider

[mean]

Most probably a refresh issue
If you change the video output in preferences to openGL or anything else, does it work better ?

[riji]

preferences - display --  OpenGL (best)  : no solution  (+ refresh Rate Cap 100 - 20 ms: no solution)

Have you seen my pictures: working version 2.60.10 had (default) Video display = Mac OS X Quartz, not available anymore

 

[mean]

Could you try :

Check "enable openGL"
Restart
Select openGl again

[riji]

That too was in vain.
Thanks for your help.

[riji]

I installed Avidemux_2.6.12_ML_64Bits_Qt5.2.dmg: no solution.

[riji]

I installed nightly build version Avidemux2.6_r2016_03_29_7c82f65189c.dmg : no solution.

Is it not possible to have Mac OS X Quartz 2D display setting back?

[mean]

Trying to update my VM

[riji]

Thank you, I'll be patient.

[mean]

I can reproduce the problem on El Capitan

[riji]

Nightly build version 1/4/2016:  Avidemux2.6_r2016_04_01_68a8f4989e6.dmg
has solved my problem.

Many thanks.