FAQ (36)

Using external codecs - using x264.

Using an external codec - Using x264

oCam supports external codecs (VFW), and here we will learn how to use the x264 codec.
 

You can download the x264 codec from the site below.

http://sourceforge.net/projects/x264vfw/


Go to the site and click the download button.


 

Download starts automatically.

For the installation screen, you can just click Next.

Agree to the license agreement.

Specify the installation path.

Installation is complete.

Click Finish.


After installing the codec, you must restart oCam to see it in the external codec list.

After restarting oCam, click the Codec button on the main oCam window and click the External Codec menu.


 

Check the Use External Codec box.



In the list, select x264vfw - H264/MPEG-4 AVC codec.



Then click the Settings button to view detailed codec settings.



A codec settings window opens as shown below. Since this is not normal video encoding but real-time screen recording, select Ultrafast in Preset and check the Zero Latency box to make encoding as fast as possible, then click OK.

(This setting is useful for real-time recording, and you can adjust it as appropriate for your situation.)

After setting it this way and starting recording, it will be recorded using the x264 codec.




If you record like this, the recording is done using x264 codec.


* For game recording, if the game you want to record is 64-bit, you must also install the 64-bit version of x264vfw (by default, unless you touch the option during x264vfw installation), x264vfw-Configure x264vfw64 from the Start menu. Run it and set it up as described above.


* Keep / Accept only YUV 4: 2: 0, Keep / Accept only YUV 4: 2: 2, Keep / Accept only YUV 4: 4: 4 are not supported for x264vfw setting and recording will fail when using this setting.


Today's News/Tips

How to Fix Severe Lag When Recording Games in Nox App Player

If you experience severe lag when starting game recording with oCam, you can resolve the issue by changing the settings as described below. In particular, if you are using Nox App Player, follow these steps to reduce lag and achieve smoother recording.


First, launch Nox App Player. After the program starts, click the gear-shaped icon in the upper-right corner of the screen to open the Settings menu. This icon is generally used to access system settings.

 

When the Settings window opens, select the 'Advanced Settings' tab from the menu on the left. In the Advanced Settings screen, find the 'Graphics Mode' option and change it to 'Speed Mode (DirectX)'. This setting optimizes performance by using system resources more efficiently and is especially effective for reducing lag during game recording. After making the change, click the 'Save Settings' button to apply it.


After saving the settings, you must completely close and restart Nox App Player. Once it restarts, the changed graphics mode will be applied, which can reduce lag and provide smoother performance when recording games with oCam.


This method is useful for resolving performance issues that occur when using Nox App Player together with oCam. If the problem continues after changing the settings, it is recommended to check your system specifications or review other oCam settings, such as frame rate and resolution, for additional optimization.

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