How can we prevent one participant's poor internet connection from degrading the video quality for everyone else?

In a pure SFU architecture, a weak connection can create a bottleneck that affects the overall media routing and stability of the call. To solve this, modern enterprise platforms like TrueConf utilize advanced adaptive bitrate technologies and intelligent media routing. This ensures that if one user's connection drops or fluctuates, the server dynamically adjusts the stream quality without disrupting the meeting for all other participants.

If SFU doesn't support server-side recording by default, how can we reliably record our video meetings?

While basic SFU setups only proxy media data, comprehensive enterprise solutions handle recording at the server level to ensure high-quality, synchronized archives. TrueConf Server overcomes this limitation by providing robust, built-in server-side recording capabilities that capture the fully mixed conference layout. This guarantees that all meeting records are stored securely on your own infrastructure without relying on individual participants to record locally on their devices.

Can we connect our existing legacy SIP and H.323 conference room hardware to an SFU-based video system?

Native SFU architectures do not support traditional telephony protocols out of the box, often requiring complex external gateways to bridge the gap. However, unified platforms like TrueConf eliminate this hurdle by including a native, built-in multi-gateway. This allows you to seamlessly integrate your existing SIP and H.323 hardware endpoints directly into modern video conferences without needing additional middleware or compromising on audio-visual quality.

Do participants need high-end computers and fast internet to join a video conference hosted on an SFU server?

Because an SFU sends multiple separate video streams to each participant, it requires significant downstream bandwidth and CPU power to decode them all simultaneously. To ensure a smooth experience for all users, TrueConf employs highly optimized media processing and scalable video coding (SVC). This drastically reduces the hardware and bandwidth requirements on the client side, allowing employees to join high-quality meetings even on older laptops or mobile devices.

Is it possible to broadcast a video conference to external platforms like YouTube or internal corporate portals?

Since standard SFU setups do not mix media streams into a single layout, live streaming to external platforms is typically not supported without adding complex third-party software. TrueConf solves this by providing native live streaming and broadcasting features directly from the server. This allows you to effortlessly stream your multipoint video conferences to YouTube, CDNs, or custom web portals, making it ideal for large-scale corporate town halls and webinars.

Should our organization choose an SFU or an MCU architecture for our enterprise video conferencing infrastructure?

While SFU is less demanding on server CPU, its lack of native recording, live streaming, and legacy hardware support makes it insufficient for complex enterprise needs. TrueConf Server combines the best of both worlds by utilizing advanced media processing that scales efficiently while delivering the full feature set of an MCU. This approach ensures you get massive scalability, server-side recording, and seamless SIP/H.323 integration all within a single, secure platform.

Back to Terminology

Video Conferencing Cameras

PTZ camera CleverCam 1303U

Video conferencing cameras are specialized devices designed for use in video conferencing sessions. There are two main categories of video cameras: consumer and professional.

The former are designed for non-professional recording and include webcams. The latter are used in video conferencing, television, and filmmaking.

Resolution and Quality

There are four main resolutions in hardware video conferencing systems: CIF (352×288), 4CIF (704×576), HD (High Definition – 1280×720), and Full HD (1920×1080)

Software-based video conferencing solutions often use QVGA (320×240) and VGA (640×480) resolutions. QVGA and CIF, as well as VGA and 4CIF, can be considered relatively similar resolutions. The former originated from the resolution of digital matrices (as in webcams), while the latter are historically based on television video standards (PAL and NTSC).

In recent years, video conferencing equipment supporting high-definition resolution and transmitting a more realistic picture — HD and later Full HD — has appeared on the market. However, HD quality requires much faster data transmission. Only devices with a screen resolution of at least 1280×720 pixels can display HD video.

HD Video Conferencing Cameras

There are several types of video conferencing cameras, including professional PTZ cameras (with three degrees of freedom), webcams, and IP cameras. All types of cameras can function as standalone devices or be integrated into other equipment (e.g., cell phones, laptops, smartphones, videophones, or video conferencing endpoints).

PTZ Cameras

PTZ cameras (Pan-Tilt-Zoom) are considered the most versatile option for video conferencing in conference rooms or in situations requiring high image quality under any conditions. These cameras do not compress the image and transmit it directly to a capture card or video conferencing endpoint without delay. They feature a rotary mechanism that allows you to aim the camera at the speaker during a conference.

The main disadvantage of PTZ cameras is their high cost, which is justified by their versatility. Almost all PTZ cameras can be controlled via remote control or a special control panel with a joystick. They can also store pre-programmed positions and quickly switch to them, or automatically zoom in on the active speaker using directional microphones.

Webcams

Webcams are devices primarily designed to capture images in real time and transmit them over the Internet. Such cameras may be connected to a computer via a USB port or integrated into the device’s body. They are suitable for personal video conferencing.

The main advantages of webcams are their low cost, small size, and pre-digitized output signal. However, unlike PTZ cameras, webcams digitize and compress the image, which introduces a slight delay in recording and transmitting video. Compression artifacts may also be visible.

IP Cameras

An IP camera (Internet Protocol camera) is a network device that transmits video data in digital format over a computer network. Each IP camera has its own IP address. To view the image captured by such a camera, it is often sufficient to enter its IP address into a browser’s address bar.

IP cameras are rarely used in video conferencing because of signal delays caused by digitization and compression. These delays are further increased by the camera’s network module, which must buffer the image for stable transmission over Ethernet-based networks. This creates additional load on network equipment and slows down video transmission.

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FAQ

Can I use a standard USB webcam for a large conference room meeting?

While standard webcams are affordable and great for personal use, they lack the wide coverage, optical zoom, and high-quality sensors needed for large groups. For professional conference rooms, it is highly recommended to use a PTZ camera to ensure everyone is clearly visible. TrueConf fully supports both basic webcams for huddle spaces and advanced PTZ cameras for larger enterprise meeting rooms.

Why are IP cameras generally not recommended for interactive video conferencing?

IP cameras are designed primarily for surveillance and introduce significant latency because they must digitize, compress, and buffer video for network transmission. This delay makes real-time, interactive communication feel unnatural and out of sync. When using TrueConf, connecting a direct USB or HDMI PTZ camera bypasses these network delays, ensuring smooth, real-time interaction without lag.

What video resolution is necessary for a professional video conferencing setup?

For modern business meetings, Full HD (1920×1080) is the standard to ensure facial expressions and shared details are clearly visible to remote participants. While older systems relied on lower resolutions like CIF or VGA, today’s networks and displays easily support high-definition video. TrueConf optimizes HD and Full HD video streams using advanced codecs, delivering crystal-clear visuals even on bandwidth-constrained connections.

How can I easily control a PTZ camera’s movements and presets during a live meeting?

PTZ cameras can be controlled using physical joysticks, IR remotes, or directly through the video conferencing software interface. TrueConf provides intuitive on-screen controls and supports standard control protocols, allowing the meeting host to seamlessly pan, tilt, zoom, or recall saved camera presets without leaving the meeting window.

Does TrueConf support automatic speaker tracking with PTZ cameras?

Yes, many modern PTZ cameras feature built-in auto-tracking capabilities that automatically pan and tilt to keep the active speaker in the frame. When integrated with TrueConf, these hardware features work seamlessly with the platform’s active speaker detection to ensure remote participants always have the best view of whoever is talking. This creates a highly dynamic, broadcast-quality experience without requiring manual camera operation.

Can I mix different types of cameras, like a PTZ and a webcam, in a single TrueConf conference?

Absolutely, TrueConf allows you to connect and switch between multiple video sources simultaneously during a meeting. You can use a high-end PTZ camera for the main room view and a secondary webcam or IP camera to show a specific product or whiteboard angle. This flexibility ensures you can build a customized, multi-angle video setup tailored to your specific meeting needs.