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How to Record Losslessly Using x264vfw
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Before getting started, you must install the x264 codec in advance. If you do not know how to install it, please refer to the Help section.
Click the Codec menu in oCam, then click the External Codec menu item.
Select Use External Codec, choose the x264vfw codec, and then click the Settings button.
Using the default x264vfw settings as a base, change the parts highlighted in the yellow box in the image below as shown.
The following settings need to be changed.
Preset - Ultrafast ( Set this to improve encoding speed. The file size may become larger, but if you choose other options, significant lag may occur. )
Profile - High 4:4:4 ( The default profile may cause quality loss, so change it to High 4:4:4 for lossless encoding. )
Keep input colorspace - Keeps the color space of the internally received input buffer. ( If you use other options, encoding may fail. )
Rate control - Single pass - lossless - Change this for lossless encoding.
Click the OK button to apply the settings.
When recording 64-bit games, the settings are applied to x264vfw64 for 64-bit, so run x264vfw - Configure x264vfw64 from the Start menu and configure it in the same way as shown above.
If you record with the above settings, the video will be recorded losslessly. One important point is that if you want to play back the lossless video without quality loss, you must change the settings in your video player.
Below is how to check a lossless video using PotPlayer.
Run PotPlayer, then click Preferences ( F5 ).
In the Preferences window,
click Video - Color Space/Attributes on the left, then in the Color Space group box on the right, select Convert manually if possible - Default output color space. ( If you do not configure this, even if the recording is lossless, the screen colors may still be altered during playback. )
Click OK, then play the video recorded losslessly.
At this point, press Ctrl + F1 in PotPlayer. As shown below, the output format of the video codec must be displayed as RGB(32 Bits).
Also, in the playback information under the File Information tab, the following properties must match as shown below.
Format profile : High 4:4:4 Predictive@L3
Color space : RGB
Color range : Full
Matrix coefficients : RGB
Please note that Windows Media Player does not play this properly, and preview thumbnails will not be displayed in Windows Explorer.
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Differences in the Paid Version of oCam and How to Register the Serial Number
This software is free for non-commercial personal use, so businesses and users using it for commercial purposes must purchase a license.
If you use it in a company, organization, public institution, educational institution, or PC cafe, please purchase a license before use.
There is no difference in functionality between the free and paid versions. All ads shown in the free version are removed in the paid version.
Of course, non-commercial individual users may also purchase it if they want to remove the ads.
After purchase, the serial number will be sent to you by email, and you can use the software after registering it as shown below.
[How to Apply the Serial Number]
As shown above, click the menu and select Register, then enter your email address and serial number and click OK. Authentication will proceed as shown below.
After a short wait, the registration will be completed successfully.
[Registered oCam Licensed Version]
This is the registered screen with the ads removed.
For reference, the ads that opened when exiting the free version are also removed in the paid version.