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Highest sound quality in the history of the steaming industry

Live Extreme is the world's first (*1) groundbreaking system that can stream lossless and high-resolution audio along with high-resolution video up to 4K, utilizing the audio engineering and Internet streaming technologies Korg has cultivated over the years.

Powered by KORG’s Advanced Audio Engineering

KORG has long been a leader in ultra-high-resolution audio engineering, being one of the first manufacturers to develop mastering-grade DSD recorders with the MR series, and bringing high-quality DSD playback to consumers with the DS series of DACs. And now with Live Extreme, KORG has made it possible to stream high-resolution 24-bit/384kHz (PCM) and 5.6MHz (DSD) audio along with 4K UHD video — a world-first innovation in the industry(*1). Live Extreme is equipped to receive audio from ASIO-compatible audio interfaces, analog, digital, and network audio sources, and embedded audio from SDI and HDMI.

Live Extreme System Diagram

Real-time live streaming of high quality video and audio from live venues to various platforms.

 

Thorough High-Quality Audio Technology

1. Support for Audio Interfaces

Live Extreme not only supports embedded audio in SDI or HDMI video signals but also accommodates external audio interfaces like USB audio interfaces. If the device is ASIO-compatible, it can serve as an audio input for the Live Extreme Encoder, enabling you to capture studio-quality audio.

2. ‘Audio-First' Software Design

Live Extreme incorporates KORG's patented synchronization correction, which synchronizes the video to the audio clock rather than vice versa. This ensures that the audio signal remains unaffected by a jittery video clock.

3. Support for Lossless and High-Resolution Audio

The audio in Live Extreme is processed with a strong focus on quality from the input stage through internal processing and to the final output. The audio signal is compressed using a lossless method into FLAC or ALAC while retaining the input device's original sample rate.

4. HLS/MPEG-DASH Direct Upload

Live Extreme delivers the data that is generated by the live encoder to the viewer without any alteration. The distribution server simply acts as a pass-through, ensuring that the uploaded audio does not degrade within the streaming server. This goes beyond just lossless or high-resolution streaming; it can truly be described as ‘bit-perfect' streaming.

Wide Range of Supported Playback Platforms

 

HLS and MPEG-DASH are both supported, enabling the most popular web browser playback.

◎:Hi-res audio is fully supported.
◯:Lossless audio is supported.
*:The supported OS and applications may vary depending on the streaming service provider.
*1 Technological support is offered to streaming service providers.
*2 When using hi-res supported Android DAP devices.

Support for Multi-Channel/Spatial Audio Streaming

Live Extreme supports live streaming of high-resolution multi-channel audio (up to PCM 384kHz/24bit, DSD 5.6MHz). This feature can be used not only for 5.1ch or 7.1ch surround sound streaming but also for streaming up to 4 separate stereo audio streams (main and secondary audio).

Additionally, Live Extreme supports HPL binaural audio broadcasting as well as spatial audio streaming through AURO-3D, Dolby Atmos and MPEG-H. From audio event streaming to public viewings of concerts, Live Extreme can meet a wide range of audio needs.

Main Features

Streaming Format

 HLS, MPEG-DASH

Live Streaming, Pre-recorded Streaming, On Demand Streaming

Video Specification

 Input Interface : 12G-SDI or HDMI

Resolution: FHD (1920 x 1080, Max. 60fps), 4K UHD (3840 x 2160, Max. 30fps)

Bit rate: Max.65Mbps (Supports 4 levels of Adaptive Bitrate streaming)

Format: H.264 High Profile

Audio Specification

 Input Device : ASIO compatible audio interfaces
Input Interface : Analog, S/PDIF, AES/EBU, MADI, DANTE, etc. (embedded audio is also accepted from SDI and HDMI)

PCM (FLAC or Apple Lossless)
Sample Rate : 44.1kHz/16bit〜384kHz/24bit
Channels：2 ch, 5.1ch, 7.1ch

PCM (uncompressed)
Sample Rate : 44.1kHz/24bit〜192kHz/24bit
Channels：From 9ch up to 16ch

DSD
Sample Rate : 2.8MHz/1bit, 5.6MHz/1bit (DoP format※2)
Channels : 2ch, 5.1ch, 7.1ch

AURO-3D
Sample Rate : 44.1kHz, 48kHz, 88.2kHz, 96kHz
Channels : 9.1ch (5.1+4H), 11.1ch (7.1+4H), 10.1ch (5.1+4H+1T)*, 11.1ch (5.1+5H+1T)*, 13.1ch (7.1+5H+1T)
*up to 48kH sampling rate

Dolby Atmos (Dolby Digital Plus JOC)
Sample Rate : 48kHz
Channel base : 5.1.4ch, 7.1.4ch, 9.1.6ch
Object base : Max. 16 elements
(Live streaming is currently not supported)

MPEG-H 3DAudio
Sample Rate : 48kHz
Channel base : 2ch, 5.1ch, 7.1ch, 5.1.2ch, 5.1.4ch, 7.1.4ch, 22.2ch
Object base : Max. 24 elements
Metadata Input : MPEG-H Control Track

Other Functions

 Format Conversion Features
• Down-Conversion of audio sample rate/bit depth
• Down conversion of video frame rate/frame size
• I/P conversion (deinterlacing)

HPL binaural processor integrated

AV synchronization function (patented)

Local storage backup

Converting pre-recorded files (such as Apple ProRes) into streamable formats

※1 Live streaming platforms capable of streaming 96kHz sampling rate and above (according to KORG’s research).
※2 DSD Audio over PCM Frames version 1.1