oCam Advanced Settings - Recording - Resize
oCam is a powerful screen recording program that lets users freely adjust video quality and resolution through a variety of recording settings. In the settings window that appears when you click "Tools - Options," the "Resize" tab under the "Recording" category provides features for fine-tuning the output resolution and quality of recorded videos. This tab is especially useful for users who want to optimize the output size and quality of their videos, and it can be used effectively by everyone from beginners to IT professionals according to their needs. Below is a detailed explanation of the main settings in the "Resize" tab.
Resize Video
If you check the "Resize Video" option, the size of the recorded video will be adjusted according to the resolution and quality settings you choose. This feature is useful when you want to resize the recorded video to a specific resolution in order to reduce file size or output it in a format optimized for a certain platform such as YouTube or Twitch. If this option is not enabled, the video will be saved at the original size of the recording area, and the resizing process will be skipped.
Supported Resolutions (Presets)
oCam provides a variety of resolution presets so users can easily choose the output size they want. The supported resolution presets are as follows:
4320p UHD 8K (7680x4320): Ultra-high-resolution video available on high-spec systems. However, only the MPEG-4 codec supports this resolution, and other built-in codecs do not support 8K.
2160p UHD 4K (3840x2160): Suitable for producing high-quality video.
1440p QHD (2560x1440): Provides sharp image quality and is suitable for users with high-resolution monitors.
1080p FHD (1920x1080): The most widely used standard resolution for YouTube and streaming platforms.
720p HD (1280x720): Suitable for general web content.
480p (854x480), 360p (640x360), 240p (426x240), 144p (256x144), 120p (160x120), 96p (128x96): Low-resolution options that can reduce file size or be used in lower-spec environments.
Half Size: Outputs the recording area with both width and height reduced by half.
Specify Width Only and Keep Height Fixed: If the user enters a width, the height is adjusted based on the original recording area height.
Specify Height Only and Keep Width Fixed: If the user enters a height, the width is adjusted based on the original recording area width.
Custom: Lets the user directly enter the desired width and height to output at a fully customized size.
If you use an external codec, some resolutions may not be supported depending on the codec's characteristics, so it is a good idea to check codec compatibility before recording.
Resolution Adjustment Methods
Half Size: This option reduces the width and height of the recording area to 50% each. For example, if the original recording area is 1920x1080, setting it to Half Size will output it at 960x540. This is useful when you want to reduce file size.
Specify Width Only and Keep Height Fixed: When the user enters a width, the height is calculated automatically while maintaining the original aspect ratio of the recording area. For example, if the width is set to 1280 and the original height is 720, the output resolution becomes 1280x720.
Specify Height Only and Keep Width Fixed: Conversely, when a height is entered, the width is adjusted to match the original aspect ratio. This method is suitable for platforms that require a specific vertical resolution, such as mobile content.
Custom: Both the width and height can be entered directly, allowing the output size to be adjusted exactly as desired. This option is suitable for advanced users with specific resolution requirements.
Quality Setting
The "Quality" setting determines the image quality of the output video when resizing is applied. The higher the quality, the sharper the video will be, but resizing may take longer and consume more system resources. On the other hand, lowering the quality speeds up the resizing process, but the sharpness of the video may decrease somewhat. Users should choose an appropriate quality level by considering file size, system performance, and the purpose of the video, such as high-quality streaming or simple sharing.
Usage Tips
The settings in the "Resize" tab can be adjusted flexibly depending on the purpose of the video and the system environment. For example, if you want to record in 1080p FHD for YouTube upload, it is best to choose that preset and set the quality to high. On the other hand, if you want a smaller video file for quick upload to social media, choosing a lower resolution such as 720p or 480p and setting the quality moderately lower can be more efficient. If you want to try 8K recording, you must use the MPEG-4 codec, and it is important to check in advance whether your system supports it. Also, by using custom resolutions, you can create videos that match the exact requirements of a particular platform or project.
The "Resize" tab in oCam supports a wide range of recording scenarios through intuitive presets and flexible custom options. Beginners can get started easily with simple presets, while IT professionals can achieve optimal results through detailed resolution and quality adjustments. Try using these settings according to your recording purpose and system environment.
Today's News/Tips
How to Reduce the Size of Recorded Video Files When Recording Games (NVIDIA Codec)
If you are using the NVIDIA NVENC H.264 codec by default, the recorded file size may be very large.
Click the Codec menu in oCam to check whether you are using the NVENC H.264 codec, as shown below.
In the oCam Codec menu, click Hardware Encoder Settings.
The Hardware Encoder Settings window will appear as shown below. You can reduce the size of the recorded video file by changing the options highlighted in the yellow box.
First, let's look at how to reduce the size of the recorded file using variable bitrate.
( Rate Control must be set to 1-PASS VBR. )
The Quantizer value can be set from 1 to 51.
The lower the Quantizer value, the better the video quality, and the higher the Quantizer value, the lower the video quality.
In other words, the recording quality is defined by the range from the minimum Quantizer value to the maximum Quantizer value.
For example,
If the minimum Quantizer value is 1 and the maximum Quantizer value is 13, the recording quality range is 1 to 13.
If the minimum Quantizer value is 1 and the maximum Quantizer value is 51, the recording quality range is 1 to 51.
If the minimum Quantizer value is 13 and the maximum Quantizer value is 51, the recording quality range is 13 to 51.
In conclusion, to reduce the size of a recorded video file, increasing the minimum and maximum Quantizer values will lower the recording quality and reduce the file size.
You can adjust the Quantizer values depending on your needs, as follows.
If you want to maintain the highest recording quality while lowering the quality at certain points to reduce the size of the recorded video, set the minimum Quantizer value to 1 and set the maximum Quantizer value to a higher number depending on how much you want to reduce the quality.
( Example: Minimum Quantizer: 1, Maximum Quantizer: 30 )
If you want to maintain medium quality while lowering the quality as much as possible at certain points to reduce the size of the recorded video, set the minimum Quantizer to 26 and the maximum Quantizer value to 51.
For reference, the minimum Quantizer value cannot be greater than the maximum Quantizer value.
That is, the minimum Quantizer value <= the maximum Quantizer value.
Caution: If you set both the minimum Quantizer value and the maximum Quantizer value to 1, the recorded video file size will become extremely large, so do not use this setting.
The default values in oCam are a minimum Quantizer value of 1 and a maximum Quantizer value of 13, and we recommend setting them within the following range.
Minimum Quantizer >= 1 and Maximum Quantizer value >= 13
Next is how to reduce the size of the recorded video file using constant bitrate.
Change Rate Control to 1-PASS CBR and then set the average bitrate.
The higher the average bitrate, the better the video quality. The lower the bitrate, the lower the video quality and the smaller the recorded file size.
Finally, there is a method that uses a fixed Quantizer parameter.
Set Rate Control to 1-PASS Fixed Quantizer Parameter.
Unlike VBR, there is no concept of minimum and maximum Quantizer values, and the quality is set using a fixed Quantizer value.