The Difference Between Cam Link 4K and a Capture Card

Cam Link 4K and Elgato's Game Capture cards both take an HDMI signal and bring it into your computer, but they are built for different setups. Cam Link 4K is designed to turn a camera into a webcam. A capture card is designed to record or stream gameplay from a console or second PC while also passing video through to a display.

If you are trying to figure out which one fits your setup, the key differences come down to what you are capturing, what resolution you need, and whether you need HDMI passthrough.

Cam Link 4K connects a DSLR, mirrorless camera, camcorder, or action cam to your computer over USB. Once connected, your camera appears as a standard webcam in any app that supports video input, including OBS Studio, Zoom, Discord, and others. There is no HDMI output. The signal goes in one direction: from your camera into your computer. This makes Cam Link 4K compact (it is roughly the size of a USB flash drive) and simple to set up, with no drivers required. Common use cases for Cam Link 4K:

• Using a DSLR or mirrorless camera as a high-quality webcam for video calls and meetings
• Adding a camera source to a stream or recording in OBS Studio
• Capturing footage from a camcorder or action cam directly to your computer
• Portable setups where size and simplicity matter

Cam Link 4K captures up to 1080p60 or 4K30 on the original model, and up to 4K60 on the latest hardware revision (MJPEG encoding is used above 30 fps at 4K). It works on Windows, macOS, and iPadOS. Because it shows up as a standard UVC device, it is compatible with virtually any app that recognizes a webcam.

A capture card sits between a video source (like a console, gaming PC, or camera) and your computer. It takes the HDMI signal, sends a copy to your computer for recording or streaming, and passes the original signal through to your TV or monitor with no added delay. That passthrough is the key difference. For a closer look at how this works, see what does a capture card do. With a capture card, you can play on your display at full resolution and frame rate while your computer records or streams in the background. Cam Link 4K does not have this capability because it has no HDMI output. Common use cases for capture cards:

• Recording or streaming console gameplay from PlayStation 5, Xbox Series X, or Nintendo Switch 2
• Dual-PC streaming setups where one PC runs the game and another handles the broadcast
• Capturing gameplay at high resolutions and frame rates (up to 4K144 on Game Capture 4K X)
• Recording HDR footage for YouTube or post-production editing

Capture cards work with Elgato Studio, OBS Studio, and other recording or streaming software. Like Cam Link 4K, they also appear as UVC devices, so they can be used in apps like Zoom or Discord if needed.

This is where the differences become most visible. Cam Link 4K is built for camera input at standard resolutions, while capture cards support higher frame rates, HDR, VRR and passthrough for gaming.

Yes. Because Elgato capture cards appear as UVC devices, they show up as a video source in apps like Zoom, Discord, and OBS Studio, just like Cam Link 4K does. If you connect a camera to a capture card’s HDMI input, your computer will see it the same way it would see a webcam.

This works well if you already own a capture card and want to use a camera for video calls or streaming without buying a separate device. Game Capture 4K S and 4K X both accept camera input and will pass the signal to your computer at up to 4K60 (or higher, depending on the card).

Cam Link 4K does one thing well: camera in, computer out. A capture card gives you more (passthrough, higher frame rates, analog audio in), but if you don't need any of that, the extra capability is just extra hardware on your desk.

Both Cam Link 4K and Elgato capture cards function as UVC video devices, meaning they are compatible with any software that accepts a webcam or video input.

For recording and streaming, Elgato Studio is built to work with all Elgato capture devices. It provides real-time HDMI diagnostics, recording controls, and detailed signal readouts. OBS Studio, Streamlabs, and other third-party recording apps also work with both Cam Link 4K and capture cards.

For video calls and conferencing, both Cam Link 4K and capture cards appear as selectable video sources in apps like Zoom, Microsoft Teams, and Discord. No special drivers are needed on any platform.

The main software difference is that Elgato Studio offers more advanced capture features (like HDR recording, format selection, and resolution controls) that are most relevant when using a game capture card. For Cam Link 4K, most users will work directly in their streaming or conferencing app of choice.

The right choice depends on your source device and what you are trying to do with the signal.

Choose Cam Link 4K if:

• Your source is a camera (DSLR, mirrorless, camcorder, or action cam)
• You want your camera to work as a webcam in video calls, streaming, or recording apps
• You do not need HDMI passthrough to a separate display
• You want a compact, plug-and-play device that works without extra cables

Choose a capture card if:

• Your source is a console, gaming PC, or other HDMI device that you also want to play on a display
• You need HDMI passthrough, so that your gameplay appears on your TV or monitor without delay
• You want to capture at higher resolutions or frame rates (4K60 and above)
• You need HDR capture or VRR passthrough for a next-gen gaming setup

If you are still not sure which device fits your setup, Capture Card Selector walks you through a few questions about your source device and recommends the right option. For a deeper look at how the game capture models compare to each other, see Which Elgato capture card is right for you.