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How to Set the Frame Rate Mode - VFR (Variable Frame Rate) or CFR (Constant Frame Rate)

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oCam is a user-friendly screen recording program that offers powerful features for a wide range of uses. It is widely used in situations that require screen recording, especially for gameplay recording, lecture creation, and tutorial video production. By default, oCam is set to use Variable Frame Rate (VFR), which is designed to operate flexibly depending on system performance and the recording environment.
Variable Frame Rate mode is the default setting in oCam. Even if the user sets the frame rate to 60 FPS in the recording settings, the actual recorded result may vary depending on system performance or the condition of the content being recorded. For example, when recording a game, if the game itself cannot maintain 60 FPS and runs at an average of 30 FPS, oCam will reflect that and record at 30 FPS. This design helps use system resources efficiently and ensures stable recording without interruptions.
In addition, Variable Frame Rate works effectively even when the system specifications do not fully meet the recording requirements. If lag occurs during gameplay, or if the system cannot maintain 60 FPS while attempting high-spec screen recording, oCam will automatically adjust the frame rate to match system performance and continue recording. This allows video to be saved at the best possible quality without overloading the system.
However, videos recorded with Variable Frame Rate can cause inconvenience in certain situations. In particular, problems may occur when using professional video editing software such as Adobe Premiere Pro. Because videos recorded with Variable Frame Rate do not have consistent frame intervals, audio and video may go out of sync during editing. To prevent this, it is recommended to change the setting in oCam to Constant Frame Rate (CFR) before recording.
When set to Constant Frame Rate, oCam tries to maintain the frame rate specified by the user, such as 60 FPS, and records frames at consistent intervals regardless of system performance. This makes editing more stable in video editing software and is especially helpful for keeping audio and video perfectly synchronized. Therefore, if you plan to edit the video afterward, recording with Constant Frame Rate is strongly recommended.
Changing the frame rate mode in oCam is very simple. After launching oCam, select 'Options' from the menu and go to the 'Recording' tab. Then click the 'General' tab, where you can find the setting to change the frame rate mode to either Variable Frame Rate (VFR) or Constant Frame Rate (CFR). With this setting, users can freely adjust the recording method to suit their working environment and purpose.
 

With its intuitive interface and simple controls, oCam is software that can be used easily by anyone from beginners to professionals. By selecting Variable Frame Rate or Constant Frame Rate according to the situation, you can smoothly handle a variety of tasks, from game recording to video editing.

All articles

Getting started
  1. oCam Quick Overview of Key Features
  2. How to Record Your Screen with oCam
  3. What is the oCam portable version, and is it okay to install it?
  4. How to Capture Images with oCam
  5. How to Record Gameplay
  6. Differences in the Paid Version of oCam and How to Register the Serial Number
  7. How to Install oCam in a Different Location
  8. oCam Basics: A Beginner's Guide to Screen Recording on Windows
Settings
  1. How to Resize the Recording Area in oCam
  2. oCam Advanced Settings - Recording - General Tab
  3. oCam Advanced Settings - Recording - Game Tab
  4. oCam Advanced Settings - Recording - Resize
  5. oCam Advanced Settings - Sound
  6. oCam Advanced Settings - Capture
  7. oCam Advanced Settings - Animated GIF
  8. oCam Advanced Settings - Hotkeys
  9. oCam Advanced Settings - Mouse Cursor Effects - Click Effects
  10. oCam Advanced Settings - Mouse Cursor Effects - Highlight Effects
  11. oCam Advanced Settings - Mouse Cursor Effects - Cursor Size
  12. oCam Advanced Settings - Save
  13. How to Reset oCam Settings (When the oCam Main Window Is Not Visible)
  14. How to Change the File Name of Saved Recordings, Audio Recordings, or Captures
  15. How to Ensure Recorded Videos Can Be Recovered Even If the App Is Force-Closed During Recording
  16. How to Add a Custom Watermark to Recorded Videos
  17. Tips for Precisely Adjusting the Recording Area Window
  18. How to Move the Recording Area While Recording
  19. Where Are Recorded Video Files Saved, and How Can I Change the Save Path?
  20. How can I prevent the oCam main window from being included in the recording?
Quality & codecs
  1. Using external codecs - using x264.
  2. How do I record in ultra-high quality (lossless)?
  3. How to Set Recording Quality (From High Quality to Low Quality)
  4. Setting the Codec - Choosing a Video Codec
  5. Setting the Codec - Selecting an External Video Codec (VFW)
  6. Setting the Codec - Adjusting Audio Codec Quality
  7. How to Reduce the Size of Recorded Video Files When Recording Games (NVIDIA Codec)
  8. How to Set the Frame Rate Mode - VFR (Variable Frame Rate) or CFR (Constant Frame Rate)
  9. FAQ About Variable Frame Rate (VFR) and Constant Frame Rate (CFR)
  10. Download Useful External Codecs
  11. How to Improve Recording Video and Audio Quality in oCam
  12. How to Use the x264vfw External Codec
  13. How to Record Losslessly Using x264vfw
  14. How to Use an External Codec - Xvid
  15. What Are Codecs and Digital Container Formats?
  16. What Video Codecs and Container Formats Are Supported?
Audio
  1. How to Record Audio Only with oCam
  2. How to Record Microphone and System Audio
  3. What to Do If the "WASRecord: pAudioClient->Initialize failed. (hr=0x80070005)" Error Occurs
  4. How to Record Microphone Audio While Recording Video (Windows XP)
  5. How to Record Microphone and Computer Audio Together While Recording (Windows Vista, 7, 8)
  6. How to Record Audio When Using a USB Audio Interface
  7. How to Record Exactly What You Hear While Recording
  8. Useful Tips for Microphone Recording in Windows 7 or Later
  9. What to Do If There Is No Sound During Recording (Windows XP)
  10. What to Do If Sound Is Muffled or Too Quiet During Recording (Windows XP)
  11. The "Failed to initialize sound library." Error Appears When Recording Starts
  12. The "The endpoint device is already in use." Error Appears When Recording Starts
  13. How to Fix Audio Coming from Only One Speaker During Microphone Recording
  14. What to Do If the Sound Becomes Louder or Distorted When Playing Recorded Videos in PotPlayer
  15. How to Fix Audio Sync Issues When Editing in Adobe Premiere
  16. Can I record only the computer's system audio and save it as an MP3?
Troubleshooting
  1. How to Fix Severe Lag When Recording Games in Nox App Player
  2. How to Fix the Black Screen Issue After Recording in Windows XP
  3. What to Do If an Error Occurs When Running the oCam Installer
  4. What to Do If the "Failed to url_fopen" Error Message Appears and Recording Does Not Start
  5. What to Do If the "Failed to av_image_alloc" Error Appears When Starting Recording
  6. oCam Closes Automatically a Few Seconds After Launching
  7. How to Fix the Issue of 7 Days to Die Not Being Detected for Game Recording (Anti-Cheat Related)
  8. What to Do If Minecraft Crashes as Soon as You Start Recording with oCam (NVIDIA Graphics Card)
  9. How to Fix Severe Lag When Editing Videos in Adobe Premiere
  10. What to Do If the "Failed to get path of 64-bit Common Files directory" Error Occurs When Installing oCam
  11. How to Fix the "Error while writing video frame (error=-28)" Error
  12. The System Becomes Sluggish During Recording
  13. If Avast is installed, please disable the DeepScreen feature.
  14. What to Do If Chrome Blocks the Download with "Blocked by Chrome because it's dangerous."
  15. What to Do If the "Cause: failed to avio_open(error=-13)" Error Occurs During Recording

Programs

  1. oCam
  2. SecretFolder
  3. CapturePlus
  4. VirtualDVD

Another helpful tip

How to Improve Recording Video and Audio Quality in oCam

How to Improve Video Recording Quality


By default, oCam uses the

MPEG-4 video codec.


The MPEG-4 codec, which is used by default, provides medium-level video quality by nature. However, it is set as the default because it is suitable for recording on low- to mid-spec computers, does not use a hardware encoder, and offers good software compatibility ( it can be played in most video players ).


If you have an NVIDIA graphics card ( GTX 600 series or later for desktops, or GTX 650M or later for laptops ) or if your CPU performance is high, you can improve video quality by recording with the NVENC H.264 encoder or the Open H.264 encoder.


As shown below, click the Codec button in the oCam main window and select either NVIDIA NVENC H.264 ( your graphics card must support it, and if it does not, an error will occur and recording will fail when you start recording ) or the Open H.264 codec to record.


For the Open H.264 codec, you need to set Recording - General - Quality to Very High in the settings to get the best video quality, as shown below. ( In the case of the NVIDIA NVENC H.264 codec, the settings below do not apply. You can change its settings from Codec - Hardware Encoder Settings in the oCam main window. )





* In the case of the Open H.264 codec, setting the quality to Very High provides good video quality, but it uses a lot of CPU resources, so frame rates may drop significantly when recording games. If your system performance is not sufficient, we recommend using the MPEG-4 codec.


* In the case of the NVIDIA NVENC codec, because it is a hardware encoder, it causes almost no frame drops during game recording and offers the best recording performance among all built-in codecs in oCam. If your graphics card supports it, using the NVENC codec is the best option.


* When using the NVIDIA NVENC codec, some games use a large amount of GPU memory, and encoding also uses a large amount of GPU memory, so recording may fail if GPU memory is insufficient.


 * The MP4 container was used in the example above, but it can also be used with MKV, M4A, MOV, and AVI containers.


 

How to Improve Audio Quality


By default, oCam uses the

AAC audio codec ( 192 kbps ).

To change the sample rate or bitrate of the audio codec, click the Codec button in the oCam main window, then click Audio Codec Settings.


Then the following window will appear.


 

As shown in the image above, the supported audio codecs are AAC, MP3, MP2, WMA, and Flac.


Personally, I recommend using the AAC codec because it is the most widely used and offers the best compatibility.

You can improve audio quality by changing the bitrate or sample rate.

For the AAC codec, the maximum supported bitrate is 512 kbps, and the maximum sample rate is 96000 kHz.


If you want to record losslessly, you can use the Flac codec, but the recording file size may become large.


To change the audio codec you want to use for recording, click the Codec button in oCam, select the container you want ( for example, assuming you are using MKV ), and then select a codec in that container that includes the audio codec you want before recording.


OhSoft - ohsoft.net

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