What to Do If the "Cause: failed to avio_open(error=-13)" Error Occurs During Recording
This error may occur because AhnLab V3 or Avast falsely detects oCam as suspicious. Below is a detailed explanation of how to resolve the issue for each antivirus program.
For AhnLab V3, if oCam is being falsely detected, you can resolve the issue by adding the `oCam.exe` file in the oCam installation folder to the scan exclusion list.
1. Open the AhnLab V3 program.
2. Go to the Settings menu and find the 'Scan Exclusions' or 'Exclusion Settings' option.
3. In the 'File/Folder Exclusions' section, click the 'Add' button.
4. Go to the folder where oCam is installed, for example `C:\Program Files\oCam`, and select the `oCam.exe` file.
5. Add it to the exclusion list and save the settings.
6. Run oCam again and check whether recording works normally.
* There may also be a conflict with the anti-ransomware feature.
For example, if drive E is set as a ransomware-protected drive and oCam's save folder is also set to drive E, an error may occur during recording. This happens because the anti-ransomware feature restricts file writing on that drive, preventing oCam from saving the video file.
In this case, keep drive E as a ransomware-protected drive and set oCam's recording save folder to drive C or D instead.
Because drive E is configured as a ransomware-protected drive, file creation and modification are restricted for security purposes, so programs such as oCam are blocked from saving files there. Therefore, the simplest solution is to move the save path to drive C or another unrestricted location.
If you want to continue using drive E, you may also consider temporarily disabling the anti-ransomware setting or adding the oCam executable file (`oCam.exe`) as an exception in the security policy for that drive.
For Avast, if oCam is falsely detected, a pop-up message like the one below may appear. In that case:
1. In the pop-up, click the 'Allow App' button to register oCam as a trusted program.
2. This will remove the error and allow oCam to work normally.
If the pop-up does not appear, you can adjust the allow settings manually:
1. On the Avast main screen, click 'Menu' and then select 'Settings'.
2. Go to the 'Blocked & Allowed Apps' section.
3. Click the '+ Allow App' button and add the oCam executable file (`oCam.exe`).
4. Once oCam has been added to the allowed apps list, save the setting and run oCam again. Recording should then work without any issues.
As an alternative, you can also disable part of the protection feature:
1. Open the 'Protection' menu on the Avast main screen.
2. Find the 'Ransomware Shield' option and turn it off.
3. Disabling Ransomware Shield may resolve the error related to oCam.
You can choose and apply whichever method is more convenient. If the problem continues even after changing the antivirus settings, it may also help to contact AhnLab or Avast customer support.
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How to Fix Severe Lag When Editing Videos in Adobe Premiere
When recording a normal screen with oCam, there is usually no major problem, but when recording games, the average bitrate of the video file may be set excessively high. A high bitrate provides high-quality video, but it can cause severe lag when editing the file in editing software such as Adobe Premiere Pro. To fix this, you need to lower the bitrate. Below is a detailed explanation of how to reduce the bitrate and improve editing performance.
1. Adjusting the Bitrate When Using a Built-in Codec
If you are using oCam's built-in codec, you can reduce the bitrate by lowering the quality setting. Follow these steps:
1. In the oCam main window, click 'Tools' in the top menu, then select 'Options'.
2. In the Settings window, go to the 'Recording' tab and check the 'General' section.
3. In the 'General' section, find the 'Quality' setting and lower the quality by adjusting the slider. The lower the quality, the lower the bitrate, which reduces the file size and decreases lag during editing.
4. Click the 'OK' button to save the settings, then try recording again.
2. Adjusting the Bitrate When Using an NVIDIA Codec
If you are using an NVIDIA hardware codec, you can adjust the bitrate directly. Follow these steps:
1. In the oCam main window, click the 'Codec' menu and select 'Hardware Encoder Settings'.
2. In the Hardware Encoder Settings window, set 'Rate Control' to '1-PASS CBR' (Constant Bit Rate).
3. Lower the 'Average Bitrate' value to a lower setting (for example, 10 Mbps or less). A lower bitrate reduces file size and improves editing performance.
4. Save the settings, restart oCam, and then start recording.
3. Re-encoding with an External Encoder
If you want to reduce the bitrate after recording in high quality without a major loss in image quality, you can record a high-quality video with oCam and then re-encode it using an external encoder program. For example, you can use PotPlayer or HandBrake. The method is as follows:
1. Record the video in your desired high-quality setting with oCam to create the video file.
2. Run PotPlayer or another encoder program, and load the video file recorded with oCam.
3. In the encoder program, re-encode it with a lower bitrate setting (for example, 5 to 10 Mbps) to create a new file.
4. Import the re-encoded file into Adobe Premiere Pro for editing. This method helps reduce file size and editing load while preserving as much of the original quality as possible.
Using the methods above, you can resolve editing issues caused by a high bitrate when recording games. If you are using a built-in codec, lower the quality setting. If you are using an NVIDIA codec, set CBR and a lower bitrate, or create an optimized file through re-encoding to achieve a smoother editing environment in Adobe Premiere. After changing the settings, make a test recording and check the result.