How do I change encoding resolution for H264?

To change the encoding resolution for H.264 do the following:

1. Click the round 'Profile' button located at the bottom of the UI.
2. In the 'Profile Setup' window, with H.264 showing in the 'Video Format' field, click 'New'.
3. In the next window, set a profile name and then click the 'Video' tab.
4. Located on the right-side of the window you can find 'Resolution'. Set it to your preference and click 'OK'.