Active presenter is a fine screen recorder with many potential apps. The base version is free. You can make screencast videos with it, manuals, documentaries and interactive presentations. With the editor you can edit videos, improve audio and adjust the 'feel and look'. 

https://youtu.be/vY7dnTDHHdo

Advantages

• Free base version.
• Edit a video after recoring.
• Many functionalities, like being able to save a project so you can later come back to it, add texts in many shapes and forms, export to avi, wmv and mp4.
• Possibilities to add interactivity.

Disadvantages

• Tedious editor.

• Water mark in the free version.

Manual? Please follow thislink.