I want to see what command-line options handbrake is sending to mencoder. I looked at the Activity Window and it shows a lot of stuff but not what I'm looking for. How can I find it?
Based on my experience with Handbrake on Windows and Linux: it does not use mencoder. Instead it offers its own command line interface: HandBrakeCLI.
On Windows one can click
Generate Batch Script to export a script which contains all the command line parameters passed on to HandBrakeCLI. Although your reference to the "Activity Window" leads me to believe you're using Mac OS X, such an option may exist on the Mac version as well.
The reason I found this thread here is because, on
https://trac.handbrake.fr/wiki/CLIGuide I noticed :
... under "Video Options"
-x, --encopts <string> Specify advanced encoding options in the same style as mencoder (all encoders except theora): option1=value1:option2=value2
under "Picture Settings"
--crop: controls the cropping values. The cropping has to be in the form Top:Bottom:Left:Right, so to crop 60pixels from the top, 58 from the bottom, 2 from the left, and 6 from the right, use --crop 60:58:2:6 ... do note that this is different from cropping in some other programs, like MEncoder. If you don't enter this setting, HandBrake will automatically detect how many pixels to crop to remove black borders.