All-in-one, 3-input computer-based switcher running Livestream Studio

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The Livestream Studio HD31 Live Production Switcher is an all-in-one, 3-input computer-based switcher running Livestream Studio software. Three Blackmagic DeckLink Mini Recorder cards allow you to capture SD or HD video from HDMI or HD-SDI sources - each card features both connectors, however only one can be used at a time. The Studio software lets you switch between these plus two "remote" channels as well as prerecorded clips in the media player. You can also add titles and effects either as overlays or using the DSK (downstream keyer), apply transitions, and more. An internal encoder gets the programme feed ready for the Web, outputting a fixed bitrate 480p H.264 stream via the HD31's Ethernet port. At the same time, the software can record a high-quality - up to 1080p - feed for archiving or editing, encoding it in the MJPEG codec at up to 100 Mbps.

Powering the HD31 is a specially-built computer with a 4.0 GHz quad-core i7 processor, 16GB of RAM, and a 2TB 7200rpm hard drive capable of storing up to 40 hours of 1080p, 100 Mbps footage. For monitoring and operating the software there are VGA, DVI-D (digital only), and HDMI outputs. These allow you to connect a regular computer monitor or TV, and up to two displays can be used concurrently. The Livestream Studio software features a configurable layout that allows you to view all of the camera/input feeds, programme and preview, clips in the media player, audio levels, and more - all on one screen if necessary.

Audio is also supported, and can be mixed in software. Up to 24 mono channels or 3 stereo pairs embedded audio through the Mini Recorder cards as well as separate audio via the 3.5mm line-in on the computer's sound card. If you prefer to use an external analogue to digital convertor or USB audio mixer, there are four DAC-UP USB 2.0 ports which are specially engineered to minimise noise when connecting an audio interface.

The HD31 can be rack-mounted using the included accessories, making it suitable for studios, production facilities, live venues, and production trucks. Also included is a twelve month telephone support plan, a configurable, colour-coded Livestream production keyboard, a mouse with mousepad, and power cord.

Supported Formats

  • Supports input video resolutions up to 1080p30/25 and 1080i60/50 at 10-bit 4:2:2 chroma subsampling - including may 24p schemes - as well as 24-bit, 48 kHz audio. Video can be recorded internally at up to 1080p in 100 Mbps MJPEG and streamed in H.264 at a fixed resolution of 480p

Livestream Studio Switching Software

  • Provides a full field rate multiview that displays all live inputs, graphics, and media players in real-time. The multiview features audio monitoring for each input and audio PPM overlay with peak hold on all inputs and outputs

Built-In Multiview

  • Multiview is built into the software, and provides typical features found in a live production control room, including full field-rate display (no matter how many inputs), tally, input labels, and audio levels

Monitor on External Screens

  • The integrated graphics allows you to monitor and operate the switching software using regular HDMI or DVI computer monitors or displays. With the HD31 you can connect up to two monitors at once


  • Cut, dissolve, or select from a collection of wipes to enhance the transition between shots or when switching between live and prerecorded content

Built-In Audio Mixer

  • The HD31's audio tools are designed to cater to producers of all sizes, from a one-man-band to a full production team. The mixer features mix automation, SDI and HDMI embedded audio, level monitoring, peak warnings as well as channel grouping so that one level adjustment can apply to several channels. The HD31 also supports the use of external audio mixers

Audio Input Options

  • Embed your audio via HD-SDI, bring in your analogue audio via a separately available USB audio device, or use the HD31's built-in 3.5mm stereo analogue audio input

Built-In Graphics Editor

  • The 2-channel graphics generator is built into the GUI and allows you add text, transparent images, live picture-in-picture video, countdowns, and a range of graphic effects including drop shadows, borders, crops, and more. Create templates to quickly change sport scores, lower third text, or other graphic elements on-the-fly

Downstream Key Overlays

  • Overlays graphics as layers on top of your programme mix with transparency. This is ideal for adding corner bugs, sport cording, lower thirds, picture-in-picture, and other broadcast graphics


  • Composite up to two live audio/video sources together within the graphics editor. Ideal for a simple second camera angle, a scoreboard cam, or a broadcast network two-person live chat over an animated background video

Media Recording

  • Record your programme output with MJPEG compression and in an AVI (.avi) wrapper for archive or editing later in NLEs including Adobe Premiere Pro, Apple Final Cut Pro, or for playback directly within one of the Studio media players. Choose from "clean" (without graphics) and "dirty" (with graphics) programmes as well any isolated live camera inputs (ISO). You can also open the files being recorded in the media player to trim and replay segments from your live show without stopping the recording

Internal Storage

  • The HD31 features a 2TB built-in hard drive for media storage, which will hold around 40 hours of footage recorded at the 100 Mbps setting. For additional storage, external USB hard drives may also be connected

Media Player

  • Adding recorded material to your programme is enabled by two media players built into the Studio software. Import a range of popular media formats, including H.264 as well as MP3 and WAV audio. Build playlists, loop clips, and auto-play on transition. Trim clips down for broadcast, and quickly scrub to find exactly what you're looking for. If a clip does not match your project settings, the built-in transcoder will convert the file to match. Additionally, thanks to the ISO recording feature, you can get basic instant replay functionality by loading one of your ISOs into the media player

Remote Camera

  • Mobile: Use the Livestream app to integrate feeds from iPhone, iPad, Android, and Google Glass cameras into your live production. Includes the ability to frame accurately synchronise the remote cameras with the HDMI/SDI inputs (adds one second of delay)

Computer Desktop: Receive a remote computer's video and audio as a Livestream Studio input via your local Wi-Fi or Ethernet network. Supports full motion and audio, and requires installing the Livestream Studio Remote Camera on the transmitting computer

Cloud: Downlink live feeds from your Livestream account(s) and use it as a remote live source in your programme mix

Integrated Live Streaming Encoder

  • Livestream Studio features a built-in H.264/AAC single-bitrate live streaming encoder. You can stream 480p video directly to Livestream, Ustream, YouTube Live, or any RTMP compatible server or CDN (Wowza Media Server, Akamai, Flash Media Server included). Also supports ZiXi streaming protocol and 1080p streaming when using custom quality settings

Stream to Any Device

  • The Livestream content delivery service supports simultaneous output to desktop browsers, Roku connected TVs, and iOS and Android devices. Invisible to the end user, this is achieved through a combination of Flash, HLS, and RTSP streaming protocols

Live Video Output

  • Output your live programme via SDI or HDMI to large format in-venue screens (iMag), broadcast networks, or complement your workflow using external video hardware such as graphics generators, encoders, and recorders

Tally Light

  • Keep your talent and camera operators in the know on what source is live and what source is coming next via our tally light integration. Supports tally devices from MetaSETZ (available separately)

Mid-Roll Ad Insertion

  • Using a separately available Livestream Platform Enterprise account, add your Google DFP ID and start monetising your stream with mid-roll advertising. Simply press the "Insert Advertisement" button to place an ad

Includes Livestream Studio Keyboard

  • With the same layout as a conventional Windows keyboard, this special keyboard features key caps that highlight Livestream Studio shortcuts to make switching faster and more intuitive

Automated Software Updates

  • Provides new features and bug fixes free of charge via Livestream's online automated software updates

Phone Support

  • Twelve months of free telephone support is included. Phone support is available seven days a week


Built-In Video Input/Output Cards
Input: 3 x Blackmagic Design DeckLink Mini Recorders (PCIe)
Output: 1 x Blackmagic Design DeckLink Mini Monitor (PCIe)
Live Video : 3 x HD-SDI (BNC) / HDMI switchable (one input per Mini Recorder card)
Separate Audio
1 x 3.5 mm line in
1 x 3.5 mm mic in
Embedded Audio: Up 3 stereo pairs or 24 mono channels via Mini Recorder cards
Remote Camera: 2 x via network
Programme: 1 x HD-SDI (BNC) / HDMI switchable
1 x DVI-D
1 x HDMI
1 x VGA
1 x 3.5 mm headphone jack
2 x 3.5 mm speaker jack
1 x Toslink
Data I/O
Rear Panel
2 x PS/2
4 x USB 3.0
4 x USB 2.0 DAC-UP (optimised for audio interfaces)
1 x Ethernet (Gigabit/100/10)
Front Panel
2 x USB 2.0
Supported Formats
1080p: 23.98PsF, 23.98p, 24PsF, 24p, 25p, 29.97PsF, 29.97p, 30PsF, 30p
1080i: 50i, 59.94i 60i
720p: 50p, 59.94p, 60p
SD: 625/25 (PAL), 525/29.97 (NTSC)
Playback Media Formats
GFX: JPEG or PNG image files with transparency support
DDR: MJPEG (.avi) with uncompressed audio, DV video, WMV (7/8/9), H.264 (.mov and .avi), MPEG4 Part 2 (.mov and .avi), MPEG4 (v1/v2) (.mov and .avi), AAC, MP3
Recording Format
MJPEG (.avi) with uncompressed audio (up to 100 Mbps)
Video: 4:2:2, 10-bit Colour (REC 601, REC 709)
Audio: 48 kHz
Media Sources
6 x Integrated digital media sources for video and graphics playback
2 x DDRs (video clip playback with built-in transcoder)
2 x GFX (graphics)
2 x Colour Bars / Background Colour
Built-In Multiview
On-screen full field rate multiview of all live inputs, Preview, Programme Out, 2 GFX, 2 DDR
Audio PPM overlay with peak hold feature on all inputs and outputs
Resizable layout allowing hiding of all controls to maximise multiview screens
Video Switcher/Mixer
1 x Mixer and Effects Bank (M/E) with no upstream keyer
Transitions: SMPTE Wipes (feathering, symmetry and positioning), Cut and Fade (auto transition with adjustable duration in frames, manual via on-screen T-BAR or keyboard shortcuts)
Graphics Downstream Key
3 x Graphics DSK (downstream key) channels -- one channel for GFX1 and one channel for GFX2
Independent or locked transition controls (fade/cut)
Preview on multiview
Graphics & Titling
Load JPG or PNG files (full transparency support with PNG files). Add dynamic text (set position/font/size/colour) over any loaded image file within the GFX1 or GFX2. Dynamic Countdown, clock and timer
Picture in Picture (PIP)
Up to two input sources per GFX Module with cropping and opacity
Video Clip Playback
2 x Media Players
Controls: Eject/Load clip, Play/Pause/Stop, Audio/Video Scrubber
Timecode indicator
Playback Options: Seek to timecode, Mark In/Mark Out, Loop, Auto-play on transition
Single channel recording of either Clean Programme or Dirty Programme, with interlacing and Time of Day timecode support
Recording Time
Approximately 40 hours at 100 Mbps using the built-in 2TB hard drive
Live Streaming
Single bitrate live streaming via built-in Ethernet. Presets in up to 480p
Supports Livestream and RTMP services, including Ustream, YouTube Live, Akamai, Wowza Media Server, and Adobe Flash Media Server
Supports ZiXi Internet transport protocol
Audio Mixing
Integrated multi-channel audio mixer for internal and external audio sources, outputs, stream and headphones. Incorporated video switcher follow feature with audio crossfade support when fading two video sources
Operating System
Windows 7 Professional (64-bit)
Built-In Display
Intel Core i7-4790K Haswell 4.0 GHz quad-core processor
8MB Cache, LGA 1150
Graphics Card
Integrated graphics
1 x 2 TB Western Digital Black SATA 2.5" internal hard drive, 7200 rpm
16 GB (2 x 8 GB) G.SKILL Trident X Series
1600 MHz (SPD) DDR3 SDRAM, 240-Pin
Dimension (D x W x H)
13.7 x 19 x 3.5" / 34.8 x 48.3 x 8.9 cm
Not specified by manufacturer
Livestream Studio HD31 Live Production Switcher
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