1. Introdução
The Osee GoStream Duet 8 ISO is an advanced 8-channel video switcher designed for professional live production, streaming, and recording. It offers versatile input options, comprehensive audio control, and powerful graphic overlay capabilities, making it suitable for various applications including broadcasting, podcasting, and online meetings.

Figure 1: Osee GoStream Duet 8 ISO Video Switcher, front view.
2. Principais características
- Flexible 8 Input Channels: Supports 4x SDI, 4x 4K-HDMI, 2x USB-3.0 Webcams, 4x NDI-HX, 2x MP4 Player, 4x SRT or RTMP. Also supports web browser and PNG/JPG images.
- PGM and 8-Channels ISO Recording: Records all video inputs, program output, and audio files to SSD in MP4 H.264 & H.265. Includes 2 built-in video players.
- Áudio Profissional: Two XLR microphone inputs with 48V phantom power and studio-grade preamp (up to 75 dB gain) for dynamic and condenser microphones.
- Advanced Layout and Graphics Overlay: MultiSource with four configurable video windows, background/graphics overlay. Features two downstream keyers for logos/lower-thirds and one upstream keyer for green screen, chroma key, PIP, and Pattern. Web browser support for dynamic overlays.
- Automated Switching: Auto-switching for seamless transitions without manual control.
- Controle Abrangente: Hard panel with PVW/PGM bus/T-Bar/Macros, and PC/Mac software control.
- Múltiplas saídas: Includes 2x HDMI and 1x SDI outputs.
- High-Quality Streaming: USB 3.0 output for high-quality video to software like Zoom, OBS, StreamYard, MS Teams, Restream, Streamlabs, Xsplit, vMix. Multi-platform streaming to up to 3 platforms simultaneously.
3. Guia de configuração
3.1 Conectando as entradas
The GoStream Duet 8 ISO offers a wide range of input options. Ensure all cables are securely connected to their respective ports.
- Connect up to 4 SDI sources to the SDI input ports.
- Connect up to 4 4K-HDMI sources to the HDMI input ports.
- USB-3.0 Webcams can be connected for additional video inputs.
- NDI-HX, SRT, or RTMP sources can be configured via network connections.
- Vídeo MP4 files can be played from an inserted SSD card.

Figure 2: Simultaneous 4 SDI + 4 HDMI input connections.

Figure 3: Connection diagram for various sources including microphones, router, wireless mic, USB camera, SD/SSD, HDMI, and SDI.
3.2 Conexões de Áudio
For professional audio, connect dynamic or condenser microphones to the two XLR inputs. The unit provides 48V phantom power for condenser microphones.

Figure 4: XLR microphone input for high-quality audio.
3.3 Conexões de Saída
Connect your display monitors or streaming devices to the available outputs:
- 2x HDMI outputs for program or multiview monitoramento.
- 1x SDI output for professional video distribution.
- USB 3.0 for direct connection to a computer for high-quality streaming via software like OBS or Zoom.

Figure 5: Connecting to multiview, PGM, and video wall via 3 outputs.
3.4 Atualização de firmware
It is highly recommended to upgrade to the newest firmware version to enable simultaneous 8-channel inputs from 4 SDI and 4 HDMI, and to ensure optimal performance and access to the latest features.

Figure 6: Reminder to upgrade firmware for full 8-channel input capability.
4. Instruções de operação
4.1 Input Management and Switching
The GoStream Duet 8 ISO allows for seamless switching between its 8 flexible input channels. Use the dedicated buttons on the control panel or the PC/Mac software for input selection.
Video 1: GoStream Duet 8 ISO Introduction - Demonstrates input capabilities, control, and key features of the switcher.
4.2 ISO and Program Recording
The unit supports isolated recording of all 8 input channels, as well as the program output. Recordings are saved to an SSD card, facilitating post-production and content repurposing.
- Insert a compatible SSD card into the designated slot.
- Initiate ISO recording to capture individual input feeds.
- Program recording captures the final switched output.

Figure 7: The 8-channel ISO and PGM recording keeps all clips for post-editing and reposting.
4.3 Mixagem de áudio
Utilize the audio controls on the panel to manage levels for connected XLR microphones and other audio sources. Adjust volume and enable/disable inputs as needed.
4.4 Layouts and Graphics Overlay
Create professional-looking broadcasts with MultiSource, allowing up to four configurable video windows. Apply graphics overlays, logos, and lower-thirds using the downstream keyers. The upstream keyer supports chroma key (green screen), luma key, Picture-in-Picture (PIP), and various patterns for dynamic visual effects.

Figure 8: Professional-looking layouts with 4 Windows MultiSource for news broadcasts, online conferences, or panel discussions.

Figure 9: Design professional and customizable overlays instantly using web-powered dynamic overlay features.

Figure 10: The 8-layer composition engine for complex visual arrangements.
4.5 Opções de controle
Control the GoStream Duet 8 ISO using its intuitive hardware panel or the dedicated PC/Mac software. The hardware panel provides direct access to key functions, while the software offers a more detailed interface for advanced configurations.

Figure 11: Versatile control via the hardware panel and PC control software.
4.6 Streaming and Remote Guests
Leverage SRT/RTMP support to invite remote guests from anywhere in the world. The USB 3.0 output ensures high-quality video for various streaming software, and the unit supports multi-platform streaming to up to three platforms simultaneously.

Figure 12: SRT/RTMP functionality for inviting remote guests worldwide.

Figure 13: USB 3.0 output for high-quality video to popular streaming software.

Figure 14: Multi-platform streaming to broadcast to up to 3 platforms simultaneously.
4.7 Troca Automática
For dynamic productions like podcasts, enable auto-switching to automatically switch camera angles, ensuring a smooth and engaging presentation without constant manual intervention.

Figure 15: Auto switching feature to switch camera angles without manual control.
5. Manutenção
To ensure the longevity and optimal performance of your Osee GoStream Duet 8 ISO, follow these general maintenance guidelines:
- Mantenha o dispositivo limpo e livre de poeira. Use um pano macio e seco para a limpeza.
- Evite expor o aparelho a temperaturas extremas, umidade ou luz solar direta.
- Garanta ventilação adequada ao redor do dispositivo para evitar superaquecimento.
- Regularly check cable connections for secure fit and wear.
- Guarde o dispositivo em local seguro e seco quando não estiver em uso.
6. Solução De Problemas
If you encounter issues with your GoStream Duet 8 ISO, consider the following common troubleshooting steps:
- Sem energia: Certifique-se de que o adaptador de energia esteja conectado firmemente à unidade e a uma tomada elétrica em funcionamento.
- No Video Input: Verify that input sources are properly connected and powered on. Check cable integrity (HDMI, SDI). Ensure the correct input channel is selected on the switcher.
- Sem áudio: Check microphone connections and ensure phantom power is enabled if required. Verify audio levels on the mixer.
- Problemas de streaming: Confirm network connectivity. Check streaming software settings and ensure correct output selection.
- Problemas relacionados ao firmware: Ensure the latest firmware is installed. Refer to the Osee website for firmware update instructions and release notes.
For persistent issues, please refer to the official Osee support resources or contact customer service.
7. Especificações
| Recurso | Detalhe |
|---|---|
| Número do modelo | GoStream Duet 8 ISO |
| Canais de Entrada | 8 (Configurable: 4x SDI, 4x 4K-HDMI, 2x USB-3.0 Webcams, 4x NDI-HX, 2x MP4 Player, 4x SRT or RTMP) |
| Gravação | PGM and 8-Channels ISO recording (MP4 H.264 & H.265 to SSD) |
| Entradas de áudio | 2x XLR (Dynamic/Condenser, 48V Phantom Power) |
| Chaveadores | 1x Upstream, 2x Downstream (Chroma Key, Luma Key, PIP, Pattern) |
| Saídas | 2x HDMI, 1x SDI, USB 3.0 |
| Resolução máxima de entrada | 4K 60fps (HDMI) |
| Resolução máxima de saída | 1080p 60fps (Recording/Streaming) |
| Dimensões | 12.17 x 8.43 x 3.43 polegadas |
| Peso do item | 2.95 libras |
| Fabricante | osee |
8. Garantia e Suporte
For detailed warranty information, please refer to the documentation included with your product or visit the official Osee website. Osee provides professional multilingual customer service to assist with any after-sales inquiries or technical support needs.
Normalmente, você pode encontrar informações de contato para suporte no site do fabricante. website: www.osee.com





