For CamStudio v3 the command line utility was removed. This was because reworking the existing utility would postpone the release even further.
It is the intention to bring this functionality back. Options:
incorporate a command line mode into the main CamStudio recorder executable (a bit harder because of the use of MFC).
move all the recording logic to a separate library and write a new command line utility that uses it.
For CamStudio v3 the command line utility was removed. This was because reworking the existing utility would postpone the release even further. It is the intention to bring this functionality back. Options: