oCam Advanced Settings - Capture

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oCam is a multifunctional program that not only supports screen recording but also provides a screen capture feature, allowing users to save specific moments on the screen as images easily. In the settings window that appears when you click the "Tools - Options" menu, the "Capture" category on the left provides options for adjusting settings related to screen capture. This tab is designed so users can customize the details of the capture feature, and it can be used intuitively by everyone from beginners to IT professionals. Below is a detailed explanation of the main settings in the "Capture" category.


Overview of the Capture Feature

The settings in the "Capture" category are the options that apply when you click the "Capture" button in the main oCam window or press the default hotkey (F3). Through these settings, users can choose the format of the captured image and decide whether to include additional elements such as the mouse cursor. The capture feature is very useful when creating tutorials, preparing software documentation, or saving a specific moment on the screen.


Include Mouse Cursor

The "Include Mouse Cursor" option determines whether the mouse cursor will be included in the captured image. By default, this option is unchecked, so the mouse cursor is not included in captured images. This is suitable when you want a clean image. However, if you want to highlight the cursor position for lecture materials or software usage guides, you can check this option to include the cursor in the image. For example, when capturing the process of clicking a specific button, including the cursor can make the material visually clearer.


Image File Format for Capture

The "Image File Format for Capture" setting lets you choose the file format used to save captured images. oCam supports several image formats, and by default it is set to PNG. PNG is the most recommended format because it provides lossless compression, allowing you to save clear images without any loss in quality. Other supported formats may include JPEG and BMP. JPEG is useful when you want to reduce file size, but it may cause some loss of image quality. Users can choose the most appropriate format by considering storage space, image quality requirements, or compatibility with a particular platform.


Usage Tips

The settings in the "Capture" category are simple, but they play an important role in improving how captured images can be used. For example, when creating tutorials, enabling the "Include Mouse Cursor" option can clearly show where the user is clicking or interacting. Using PNG format by default helps maintain high image quality, making it suitable for professional documentation. On the other hand, if minimizing file size is important, you can choose JPEG format to save storage space. If you often use the capture hotkey (F3), changing it to a different key or becoming familiar with it can also help improve your workflow.


In addition, if you want to review and edit captured images immediately after saving them, it is a good idea to set the save location in advance in oCam. This makes it easier to find and use captured images quickly. If you are capturing the UI of specific software or a game screen, be sure to define the capture area accurately so that unnecessary parts are not included.

Another helpful tip

How to Reduce the Size of Recorded Video Files When Recording Games (NVIDIA Codec)

If you are using the NVIDIA NVENC H.264 codec by default, the recorded file size may be very large.


Click the Codec menu in oCam to check whether you are using the NVENC H.264 codec, as shown below.

In the oCam Codec menu, click Hardware Encoder Settings.

The Hardware Encoder Settings window will appear as shown below. You can reduce the size of the recorded video file by changing the options highlighted in the yellow box.

First, let's look at how to reduce the size of the recorded file using variable bitrate.

( Rate Control must be set to 1-PASS VBR. )


The Quantizer value can be set from 1 to 51.

The lower the Quantizer value, the better the video quality, and the higher the Quantizer value, the lower the video quality.

In other words, the recording quality is defined by the range from the minimum Quantizer value to the maximum Quantizer value.


For example, 

If the minimum Quantizer value is 1 and the maximum Quantizer value is 13, the recording quality range is 1 to 13.

If the minimum Quantizer value is 1 and the maximum Quantizer value is 51, the recording quality range is 1 to 51.

If the minimum Quantizer value is 13 and the maximum Quantizer value is 51, the recording quality range is 13 to 51.

In conclusion, to reduce the size of a recorded video file, increasing the minimum and maximum Quantizer values will lower the recording quality and reduce the file size.


You can adjust the Quantizer values depending on your needs, as follows.

If you want to maintain the highest recording quality while lowering the quality at certain points to reduce the size of the recorded video, set the minimum Quantizer value to 1 and set the maximum Quantizer value to a higher number depending on how much you want to reduce the quality.

( Example: Minimum Quantizer: 1, Maximum Quantizer: 30 )


If you want to maintain medium quality while lowering the quality as much as possible at certain points to reduce the size of the recorded video, set the minimum Quantizer to 26 and the maximum Quantizer value to 51.

For reference, the minimum Quantizer value cannot be greater than the maximum Quantizer value.

That is, the minimum Quantizer value <= the maximum Quantizer value.


Caution: If you set both the minimum Quantizer value and the maximum Quantizer value to 1, the recorded video file size will become extremely large, so do not use this setting.

The default values in oCam are a minimum Quantizer value of 1 and a maximum Quantizer value of 13, and we recommend setting them within the following range.

Minimum Quantizer >= 1 and Maximum Quantizer value >= 13


Next is how to reduce the size of the recorded video file using constant bitrate.

Change Rate Control to 1-PASS CBR and then set the average bitrate.



The higher the average bitrate, the better the video quality. The lower the bitrate, the lower the video quality and the smaller the recorded file size.


Finally, there is a method that uses a fixed Quantizer parameter.

Set Rate Control to 1-PASS Fixed Quantizer Parameter.



Unlike VBR, there is no concept of minimum and maximum Quantizer values, and the quality is set using a fixed Quantizer value.