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Below is a detailed guide on how to record audio and configure the settings in oCam.
Recording System Audio by Default
When you start screen recording with oCam, system audio is recorded automatically by default. This includes all sounds played on your computer, such as video audio, game sound effects, and system notification sounds. This setting is applied immediately without any extra steps, making it very convenient for users who want to record only system audio. For example, when recording gameplay footage or creating software tutorial videos, you can capture only the system audio cleanly.
Recording Microphone Audio as Well
If you want to record microphone audio together with system audio, you only need to adjust the settings slightly in oCam. First, click the "Sound" button on the main screen of oCam. A pop-up window for sound settings will then appear. In this window, a list of available microphone devices is shown, and you can select the microphone you want to use. For example, if you are using an external microphone or a headset microphone, simply select and enable that device. Through this process, both system audio and microphone audio are recorded at the same time, which is very useful when creating lecture videos or recordings that require live narration.
Applying the Audio Recording Settings
Once you select the microphone and complete the settings, oCam immediately applies them. After that, when you start recording, both system audio and microphone audio will be recorded together. This feature is especially effective for situations where both your voice and system sound need to be captured at the same time, such as YouTube content creation, online classes, or game streaming. To make sure the settings have been applied correctly, it is a good idea to run a short test recording and check whether the audio is being recorded properly.
Disabling Audio Recording
Sometimes you may want to capture only the screen video without recording any sound at all. In that case, uncheck the "Record System Audio" option in the sound settings window of oCam, and select "Do Not Record Microphone" in the microphone settings as well. With this configuration, oCam records only the screen video without any sound, which is suitable for tasks where a silent video is needed, such as when you plan to add background music separately later.
Adding a watermark to videos recorded with oCam helps clearly indicate the source of the video and reduce the chance of unauthorized use by others. A watermark is a feature that inserts a specific image into the video, such as a logo, text, or icon, to identify the creator or ownership. This is effective for protecting the uniqueness of the video and promoting your brand.
To add a watermark in oCam, first click 'Tools' in the top menu of the oCam main window, then select 'Options'. When the Settings window opens, click 'Watermark' in the left menu to go to the watermark settings screen.

On the watermark settings screen, you can adjust several options. First, if you check 'Use Watermark', the selected image will be inserted as a watermark in the recorded video. You can choose the image to use as the watermark under 'Image Path', and PNG, JPG, and BMP formats are supported. PNG format in particular also supports images with an alpha channel (transparency), so you can use logos or images with transparent backgrounds.
The 'Opacity' setting adjusts the transparency of the watermark image. If the opacity is set to 100%, the watermark image will appear fully opaque. The lower the value, the more transparent the image becomes, allowing it to blend more naturally into the video. This lets you adjust the watermark so it does not interfere with the readability of the video.
The 'Position' setting determines where the watermark appears in the video. For example, you can choose the top left or bottom right so the watermark appears in the desired area of the screen. This allows you to place the watermark without covering the main content of the video.
For example, if you set a specific logo image as the watermark and start recording, that image will appear as a watermark at the selected position in the final video. A watermark added in this way makes the source of the video clear and helps viewers easily identify the creator.
If you want to create your own watermark image, search for "create watermark" on a search site to find various design tools and methods. For example, you can use graphic editing programs such as Photoshop or Canva to create a logo or text, or use an online watermark generator to easily create a distinctive watermark.
Using the watermark feature in oCam, you can give your videos a more professional and secure finish with just a few simple settings. Try creating your own unique videos with the right image and settings.