Introduction · Advanced user tips PC Blackbox Recorder, Auto Desktop Screen Recording

What is the "PC Blackbox" function?

Black boxes are usually used in airplanes and other vehicles to record activity before a crash.
The purpose of the PC Blackbox function of Bandicam is to record your desktop screen and sound automatically while your computer is running.
Bandicam 2.0 or higher versions allow you to capture your screen activities in real-time using the "Auto Start Recording" and "Auto Complete Recording" functions.

* Use cases of PC Blackbox

- Most users: Record your full computer screen continuously from when Windows starts.
- QA jobs: Easily find mistakes or defects of your products by recording your computer screen.
- Monitoring: Check/Monitor if bank tellers, telemarketers, clerks, shop assistants, part-time workers are following the company's policy.
- Trading system: Record your trading system of stocks, bonds, futures, options, Forex which prices fluctuate almost every second.
- Server/Network monitoring: Record the traffic screen of web servers, network servers, storage servers.
- CCTV/Camera: Record the screen of closed-circuit television (CCTV) cameras for over 24 hours if it can be seen on your PC.

How to use PC Blackbox?

1. Auto Start Recording

auto start recording, pc blackbox recorder

If you want to automatically record your computer screen when Windows starts, please check the options below:
   - Start Bandicam minimized to tray (Optional).
   - Run Bandicam on Windows startup (Essential).
   - Start full-screen recording on Bandicam startup (Essential).
If you want to automatically start recording at a specific time, check the "Set timer for Auto Start Recording" option.

2. Auto Complete Recording and Power & sleep settings

PC Blackbox recorder, auto complete recording

If you have to record your computer for a long time, we highly recommend you use the "Auto Complete Recording" function to store the videos safely. If you want to create the video file every hour, choose "1 hour" at the recording time menu, and choose the "Start new recording" option as shown above.

Please also select the "Never" option at the "Power & sleep settings" when you record a computer for a long time.

power and sleep settings for screen recording

3. Hiding the Recorder Status bar

Hiding the Recorder Status bar

To hide the screen recording window, click the "Show / Hide" menu or use the "Around mouse" recording mode.

4. Best settings for PC Blackbox

How to reduce the file size

We recommend you choose the "AVI" container; it will allow you to repair a corrupted/broken file through Bandifix.
If you want to reduce the file size of the video,
   - Change the video size from "Full size" to "Half size" (Optional)
   - Change the FPS (Frames per second) number from "30" to "10" (Optional)
   - Select the "H264" video codec (Recommended)
   - Change the quality value from "80" to "10" (Optional)
   - Uncheck the "Record sound" option (Optional)

5. Schedule recording with Windows Task Scheduler and Command Line (Timer Recording)

If you use "the command line parameters of Bandicam (/record, /stop, /shutdown)" and "Windows Task Scheduler", you can automatically start recording "at a specific time on a daily/weekly/monthly schedule" or "at the most recently used location/size in Screen Recording Mode".

Windows Task Scheduler, start

For more information, please refer to "How to start recording automatically with Windows Task Scheduler".

* Tip) Use Bandicut to cut parts of video.

If you have recorded your desktop screen for a long time, you may want to remove the unwanted part of the video.
Please try Bandicut ( to save only the part of the video that you want without losing the original video quality.