Blackmagic Design Streaming Decoder 4K Blackmagic Design

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Blackmagic Streaming Decoder 4K receives an H.264 or H.265 signal from an encoder, a compatible camera or an ATEM switcher and converts it to 12G-SDI and HDMI at up to 2160p60. It is designed for reliable remote studio links and camera signal workflows; its 12G-SDI reference input sends tally, talkback and camera control back to the source.

From the stream back to SDI and HDMI

Blackmagic Streaming Decoder 4K receives an H.264 or H.265 stream and converts it to 12G-SDI and HDMI video. Together with the encoder it builds a broadcast link between two locations over the internet.

H.264 · H.265SRT · RTMP12G-SDI + HDMI 2.02160p60Tally · talkback1/3 rack

Broadcast links over the internet

An encoder at the remote location and a decoder in the control room connect cameras to a central control room – including tally, talkback and camera control back to the shoot.

H.264 and H.265 reception

RTMP streams in H.264 or SRT streams in H.265 from an encoder, an ATEM switcher or a Blackmagic camera.

Tally, talkback and camera control

The 12G-SDI reference input sends tally, talkback and camera control back to the encoder.

Output format conversion

The 12G-SDI and HDMI outputs follow the stream standard or convert it to a chosen format.

Blackmagic Cloud

Besides direct links it also receives streams via the Blackmagic Cloud streaming features.

Professional stream decoder

Blackmagic Streaming Decoder 4K receives an H.264 or H.265 stream from Blackmagic Streaming Encoder, an ATEM switcher or a Blackmagic camera and converts it back to 12G-SDI and HDMI 2.0 video. It works with HD and Ultra HD standards up to 2160p60, and on the HDMI output also with 4K DCI formats up to 60p.

Broadcast links with the decoder

Blackmagic Streaming Decoder 4K receives the H.264 or H.265 stream from the encoder and converts it to SDI and HDMI video, so video can be sent point-to-point between remote locations. The decoder's 12G-SDI reference input carries tally, camera control and talkback back to the encoder – everyone is remote, but still working together.

Tally, talkback and camera control back to the shoot

The 12G-SDI reference input takes tally, camera control and talkback from the SDI output of an ATEM switcher and sends them back to the encoder at the location. You can change ISO, tint, iris, focus and zoom of Blackmagic cameras remotely. It also works with cameras with built-in streaming.

USB-C as a webcam

The USB-C connection can be used as a webcam output at up to 2160p60, so any video call or streaming software on a computer can take the received stream.

Power and control

The decoder has a built-in 100–240 V AC power supply and a 4-pin 12 V DC input for backup or battery power and, like the encoder, takes up one third of a rack width. It is set up with the front panel buttons and 2.2″ display, via USB-C, Ethernet or Blackmagic Streaming Utility.

Connections and controls

The front panel has USB-C, control panel buttons, the LCD display and a spin knob.

The rear panel has an AC power input, a 12 V DC power input, Ethernet for the live stream, a USB-C webcam output, an HDMI 2.0 output, a 12G-SDI output and 12G-SDI reference in and out.

Dimensions and weight

140 × 44.45 × 175.5 mm (W × H × D), weight 760 g. One third rack width, 1 rack unit high.

More information

• Blackmagic Streaming Decoder 4K
• Welcome wallet with QR code for software download

• SDI: 1× 12G-SDI output, 1× 12G-SDI reference input, 1× 12G-SDI reference output; rates 1.5G, 3G, 6G, 12G
• HDMI: 1× HDMI 2.0 output (4:2:2 YUV)
• Audio: live stream 2 channels on output; program 2 channels and talkback 2 channels on input; SDI 16 channels on ref in, ref out and 12G-SDI out; HDMI 8 channels
• Webcam: 1× USB-C up to 2160p60
• Ethernet: 10/100/1000 BASE-T for live streaming, configuration and software updates
• Video input standards: 720p50–60, 1080i50–60, 1080p23.98–60, 2160p23.98–60
• HDMI formats: 720p50–60, 1080i50–60, 1080p23.98–60, 2160p23.98–60, 4K DCI 23.98–60p
• Streaming standards: 720p25, 720p30, 720p50, 720p60, 1080i50–60, 1080p23.98–60, 2160p23.98–60
• Output conversion: 12G-SDI and 4K HDMI outputs follow the stream standard or convert to 720p25 up to 2160p60
• SMPTE compliance: SMPTE 292M, 296M, 424M, 425M (A, B), 2081-1, 2081-10, 2082-1, 2082-10, 2084, 2108-1
• Color space: Rec. 709, Rec. 2020
• 3G-SDI: auto detects level A or B
• HDR metadata: Hybrid Log-Gamma, ST2084 (300, 500, 800, 1000, 2000, 4000)
• Streaming: receives RTMP in H.264 or SRT in H.265 from the encoder or compatible Blackmagic cameras; Blackmagic Cloud
• Timecode: source timecode from RTMP and SRT streams on 12G-SDI out
• Return data: tally, talkback and camera control via the 12G-SDI reference input back to the encoder
• Control panel: 6 buttons, spin knob and 2.2″ color display
• Control: front panel, USB-C or Ethernet; camera control, color corrector, tally and talkback; REST API over Ethernet
• Compatible services and software: 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 13.0 Ventura, Mac 14.0 Sonoma or later, Windows 10 (64-bit), Windows 11, Linux, Chrome OS
• Power: 1× internal 100–240 V AC; 1× 4-pin XLR +12 V DC for external power or battery
• Installation: one third rack width, 1 rack unit high
• Dimensions (W × H × D): 140 × 44.45 × 175.5 mm
• Weight: 760 g
• Operating temperature: 0 to 40 °C
• Storage temperature: −20 to 45 °C
• Relative humidity: 0 to 90% non-condensing
• Warranty: 3 year limited manufacturer warranty