Videohívás

Videohívás (Hungarian for "video call") refers to real-time audiovisual communication between two or more participants over a digital network. A videohívás provides live video and audio streams, typically with accompanying features such as text chat, screen sharing, and file transfer.

Technically, videohívás relies on real-time communication technologies. In modern consumer services, this is often implemented with WebRTC or similar protocols. The media stream is captured by a camera and microphone, encoded, transmitted over the network using RTP/UDP, and decoded on the receiver. Signaling protocols establish the session, negotiate codecs, and manage participants. Many platforms use servers for signaling, relay, or media routing, and may employ NAT traversal techniques to enable connections across networks.

Historically, videohívás evolved from large, dedicated videoconferencing systems to software-based services. Early consumer tools such as Skype popularized video calling in the 2000s; more recently, platforms like Zoom, Google Meet, FaceTime, and others provide scalable group videohívás for work, education, and personal use. WebRTC has enabled browser-based videohívás without special plugins.

Applications span remote work, education, healthcare, and personal communication. Common features include high-definition video, multi-participant rooms, screen sharing, recording, chat, and virtual backgrounds. Platform-specific options include end-to-end encryption, meeting controls, and accessibility features. Privacy and security considerations depend on the service and configuration.

Performance depends on network bandwidth and latency; low bandwidth can reduce quality or cause interruptions. Security concerns include eavesdropping or data leakage if encryption is not used or misconfigured. Regulatory considerations and consent requirements may apply in professional contexts.