This old chestnut

[Majora]

What screen recording software do you use? Trying to record ZC and I have HyperCam2 but it seems to be very temperamental. I want to record in 60FPS and it plays back at hyperspeed once I'm done recording.

[Anarchy_Balsac]

The free version of Active Presenter is more than sufficient for ZC, it's what I used to record the secret level videos for my upcoming quest.

Do NOT use CamStudio though, in recent year, the official site started hosting malware.

[Chris Miller]

Fraps gets the job done for me. It's probably a good idea to to shrink the ginormous files it produces.

[Brasel]

Alternatively, you can try Open Broadcast Software, which I'm pretty sure allows you to record without actively broadcasting to anything, though I may be mistaken. You can pick it up at twitch.tv.

[_Mitch]

Open Broadcaster Software (https://obsproject.com/) and Bandicam (http://www.bandicam.com/) are the best I have seen.
Bandicam is expensive, and OBS is free (plus open source). Both OBS and Bandicam are GPU-based, and mostly for game capturing.

For a lightweight, portable program that is Win7 only, you can try this (https://graphics.stanford.edu/~mdfisher/VideoCapture.html)- but performance is not nearly as great as OBS.

Remember not to run ZC at a high resolution, keep it low!

[Majora]

I have OBS laying around that i use for occasional game streaming and it is indeed pretty swell. yes it can record without broadcasting. :D

I have a GTX 670 and the fact that OBS has Nvidia NVENC is amazing.