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How to Fix the "Error while writing video frame (error=-28)" Error
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When recording with oCam, the following error message may appear after a certain amount of time:
"Error while writing video frame (error=-28)"
This error (error code 28) occurs when the file system of the path where the recorded video file is being saved is formatted as FAT (FAT32). The FAT file system has a maximum single-file size limit of 4 GB, so this error occurs when the recorded file size exceeds 4 GB. Below is a detailed explanation of how to resolve this issue.
To fix this error, you can choose one of the following two methods:
1. Change the save path to an NTFS file system
The NTFS file system has a much larger file size limit (up to 16 EB), so it can store video files larger than 4 GB without any problems. To change oCam's save path to a drive or folder that uses the NTFS format, follow these steps:
1. In the oCam main window, click 'Tools' in the top menu, then select 'Options'.
2. In the Settings window, click the 'Save' category in the left menu.
3. Under the 'Save Path' item, check the current path and change it to another drive or folder that uses the NTFS file system (for example, `C:\Videos` or `D:\Recordings`).
4. Click the 'OK' button to save the settings, restart oCam, and then try recording again.
2. Format the existing drive as NTFS
If the drive you are currently using is formatted as FAT or FAT32, you can convert or format it to NTFS. However, formatting will erase all data on the drive, so be sure to back up any important files first. To format the drive, follow these steps:
1. Open File Explorer and right-click the drive you want to format (for example, a USB drive or external hard drive).
2. Select 'Format' and set the file system to 'NTFS'.
3. Choose the formatting options, then click 'Start' to begin formatting.
4. After formatting is complete, set that drive as the save path in oCam and use it.
Additional Checks
- To check whether the drive's file system is FAT32, right-click the drive in File Explorer and select 'Properties' to view the file system information.
- If the problem continues even after changing to NTFS, check whether the drive has enough free space and whether you have write permission.
By changing the save path to an NTFS file system or formatting the drive, you can save large video files over 4 GB without errors. After changing the settings, make a test recording to confirm that the problem has been resolved.
Programs
Another helpful tip
How to Record Microphone and System Audio
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.