Essential Information About the Blackmagic Web Presenter 4K Encoder
- Hardware streaming up to 2160p60 via Ethernet, 4G/5G tethering, or USB-C in "webcam" mode for immediate computer integration.
- RTMP and SRT compatibility with H.264 encoding and support for SRT in H.265, designed for reliable and bandwidth-efficient streaming.
- 12G-SDI multi-format input and SDI/HDMI monitoring outputs at 1080p, with full display of video, audio, and network status.
- 1/3 rack size in 1U, internal 100-240 V power supply and +12 V DC input via 4-pin XLR for fixed installations and mobile setups.
From the simplicity of the Web Presenter HD to the power of 4K
The Web Presenter 4K continues Blackmagic Design's line of "plug and stream" encoders: fast setup, stable operation, and user-friendly design for daily use. Compared to the HD generation, this version steps up with Ultra HD streaming, the introduction of SRT in H.265, and 12G-SDI connectivity suited to current production workflows.
Designed to meet broadcast environment demands, it fits equally well in a control room rack or a flight case, with a clear philosophy: provide a standalone encoder that secures streaming while maintaining immediate control from the front panel and clear monitoring via SDI or HDMI output.
A 4K encoder made for studios, control rooms, and live events
The Blackmagic Web Presenter 4K targets teams that stream regularly: streaming studios, institutions, local authorities, cultural venues, event service providers, training organizations, or live content producers. It is especially suitable for formats where reliability is paramount: conferences, webinars, concerts, sports competitions, multi-camera sets, and long-form captures.
Its major advantage both on-site and in the studio is operational visibility: you monitor video status, audio levels, and network conditions in real time while retaining a dedicated monitoring output. The result: fewer on-air uncertainties and faster diagnostics when intervention is needed.
Front panel control, detailed monitoring, and universal compatibility
Direct control interface and remote management
The front panel combines 6 buttons, a rotary knob, and a color screen to adjust and verify settings without constantly relying on a computer. For integrated workflows, control is also possible via USB-C or Ethernet, convenient in control rooms when centralizing administration and updates.
USB-C in "webcam" mode: the ideal bridge to video conferencing
In addition to direct streaming, the USB-C can emulate a webcam up to 2160p60. This approach simplifies use with videoconferencing tools and computer software: the Web Presenter 4K becomes a "universal" video interface to send a clean signal from an SDI chain to meeting, recording, or streaming platforms.
RTMP and SRT streaming: robustness and flexibility depending on the network
For standard platforms, RTMP in H.264 remains a simple-to-deploy standard. When network conditions become more variable, SRT provides a resilience layer appreciated in live production, with the option to use H.265 to optimize quality at equivalent bitrates. Additionally, support for CEA-608/708 closed captions embedded in the RTMP stream is included, useful for accessibility requirements and certain institutional workflows.
Technical Specifications
Video Connectivity
- Connections: SDI inputs: 1
- Connections: SDI loop output: 1
- Connections: SDI monitoring output: 1
- Connections: HDMI monitoring output: 1
- USB-C webcam up to 2160p60
- SDI bitrates: 1.5G, 3G, 6G, 12G
- 3G-SDI: automatic level A/B detection
- SDI/HDMI monitoring output: 1080p50/59.94/60
Audio (embedded)
- SDI input: 16 channels
- SDI Loop Out output: 16 channels
- HDMI Monitor Out: 2 channels
Supported Video Formats (Input)
- HD input standards: 720p50/59.94/60
- HD input standards: 1080i50/59.94/60
- HD input standards: 1080p23.98/24/25/29.97/30/50/59.94/60
- HD input standards: 1080PsF23.98/24/25/29.97/30
- Ultra HD input standards: 2160p23.98/24/25/29.97/30/50/59.94/60
- Color spaces: Rec.601, Rec.709, Rec.2020
Streaming (standards, protocols, codecs)
- Streaming standards: 720p25/30/50/60
- Streaming standards: 1080p23.98/24/25/29.97/30/50/59.94/60
- Streaming standards: 2160p23.98/24/25/29.97/30/50/59.94/60
- Direct streaming: RTMP H.264
- Direct streaming: SRT H.264/H.265
- Closed captions: CEA-608/708 embedded in RTMP stream
Network and Configuration
- Ethernet 10/100/1000 BASE-T (streaming, configuration, updates)
Control and Interface
- Control: integrated panel (6 buttons, rotary knob, 2.2-inch color screen)
- Control via front panel, USB-C, or Ethernet
Software and Platform Compatibility
- Facebook, Twitch, YouTube, Twitter, Restream.IO, Vimeo, BoxCast, Castr, AfreecaTV, Bilibili, DouYu, Weibo
- Zoom, Skype, Microsoft Teams
- QuickTime Player, FaceTime
- OBS Studio, Open Broadcaster, VLC, Wirecast Play, Wowza Streaming Engine
Operating Systems
- Mac 13 Ventura, Mac 14 Sonoma or later
- Windows 10/11
- Linux
- Chrome OS
Power and Consumption
- Power supply: internal AC 100-240 V
- DC input: +12 V 4-pin XLR
- Power consumption: 25 W
Form Factor and Installation
- Form factor: 1/3 rack width
- Form factor: 1U height
Environment
- Operating temperature: 0 to 40 degC
- Storage temperature: -20 to 45 degC
- Humidity: 0 to 90% non-condensing
Included
- Blackmagic Web Presenter 4K
en 
