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Definições Yealink

Siglas e termos explicados

Yealink explora as explicações simplificadas de Yealink sobre termos comuns de comunicação empresarial em relação à aplicação de três principais dispositivos de comunicação: telefones IP, equipamentos de videoconferência e fones de ouvido executados em Microsoft, Zoom e outros sistemas, no trabalho empresarial.

O que é uma câmera de vídeo 4k?

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Câmera de vídeo 4K é um tipo de câmera projetada para capturar conteúdo de vídeo em uma resolução de 4K, que normalmente se refere a uma resolução horizontal de cerca de 4.000 pixels. A resolução 4K mais comum usada para vídeo é 3840 x 2160 pixels (frequentemente chamada de Ultra HD ou UHD), que é quatro vezes o número de pixels em Full HD (1920 x 1080).


Aqui estão alguns recursos e aspectos principais das câmeras de vídeo 4K:


1. Resolução

Como mencionado, as câmeras de vídeo 4K capturam vídeos com uma resolução de 3840 x 2160 pixels, proporcionando altos detalhes e clareza.


2. Tamanho do sensor

Essas câmeras geralmente têm sensores maiores em comparação às câmeras de baixa resolução, o que pode resultar em melhor desempenho em pouca luz e menor profundidade de campo.


3. Taxas de quadros

Muitas câmeras 4K suportam várias taxas de quadros, incluindo 24 fps, 30 fps e taxas de quadros ainda mais altas, como 60 fps ou 120 fps, que podem ser usadas para efeitos de câmera lenta.


4. Formatos de vídeo

Eles geralmente oferecem diferentes formatos de vídeo, como H.264 ou H.265 (HEVC), e podem suportar codecs profissionais como ProRes ou DNxHR.


5. Mídia de gravação

Dependendo do modelo, essas câmeras podem gravar em cartões SD, cartões CFast ou unidades de estado sólido (SSDs) internas.


6. Conectividade

Recursos como saída HDMI, portas USB, Wi-Fi e conectividade Bluetooth são comuns, permitindo conexão direta a monitores, gravadores externos ou transmissão sem fio.


7. Controles e Interfaces

A maioria das câmeras 4K vem com controles e interfaces avançados, incluindo telas sensíveis ao toque, botões personalizáveis e opções de controle remoto.


8. Duração da bateria

Dependendo do modelo, a duração da bateria pode variar, mas muitas câmeras 4K são equipadas com baterias recarregáveis que fornecem várias horas de gravação.


9. Recursos adicionais

Alguns modelos incluem estabilização de imagem integrada, pico de foco, padrões de zebra e outras ferramentas para auxiliar na captura de fotos.


Câmeras de vídeo 4K são amplamente utilizadas em produções cinematográficas profissionais, transmissão de televisão, videoconferências, salas de reunião, videografia de eventos e por criadores de conteúdo que precisam de filmagens de alta qualidade para plataformas online como YouTube e Vimeo.




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