How to Record Microphone and Computer Audio Together While Recording (Windows Vista, 7, 8)
For Windows Vista, 7, and 8, normal operation may not be guaranteed because Microsoft has ended support for these operating systems. (Reference)
In the oCam main window, click the Sound button.
The following menu will appear, and by default, No Microphone Recording is selected.
Select the microphone you want to record. ( If your microphone does not appear in the list, refer to the instructions below. )
Once selected, the setting will be applied as shown below, and the microphone audio will be recorded together.
If the microphone device does not appear in the list above even though the microphone is connected, proceed as follows.
( If, as shown below, no microphone-related menu appears at all and only the system sound recording menu is shown, or if a microphone item appears but not all microphone devices are listed, or if you are using a separately purchased audio interface, the audio interface device rather than the default microphone device should appear in the list. If it does not, follow this procedure. )
Go to Start Menu - Control Panel.
In Control Panel, find and click Sound.
The following window will appear. Click the Recording tab.
In the Recording tab, right-click the white area where it says No audio devices are installed to open the pop-up menu. ( Or, if recording devices are listed but the device you want does not appear. )
Click Show Disabled Devices.
Select the microphone device you want to use, right-click it, and click Enable.
( If you are using an audio interface, a separate recording device called Line In may appear instead of a microphone, and you should record using that device. )
In oCam, click the Sound button to check whether the microphone device now appears correctly.
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How to Fix the "Error while writing video frame (error=-28)" Error
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.