For Windows and Mac:
I really dont know if it support the wanted feature, but in general it is a sweet tool and for a few days even for free.www.videoproc.com
<- Original Linkgerman Chip.de
<- Free Giveaway Version
Open 2nd link
click "Download Vollversion"
another window open
click "Download Server xyz"
When all went good, you have received a .zip file.
Inside .zip archive is a .pdf and a .exe
Install product by executing .exe
Open .pdf and type inside VideoProc "Register" screen the number from .pdf.
Have fun and enjoy
Be aware, the license key is meant for the .exe inside .zip only and cant be used with later versions...!
So do not update VideoProc unless you buy it.
BTW: VideoProc uses Hardware accelerated GPU encoding/decoding, thats why i use it :-]