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SL NEO Live Short Delay

Live delay from 1 to 30 seconds for rapid on-air intervention
Seamlessly integrates ST 2110, SDI, RTMP, NDI, SRT, UDP, and more
Manual emergency blocking of profanity, offensive gestures, harmful visuals, and technical issues
Support hotkeys, external USB panel, or GPI buttons
Short-delay protection for live broadcasts

Overview

SL NEO Live Short Delay is a professional live broadcast delay and content-moderation solution designed to prevent unwanted audio or video from reaching air. It provides a configurable safety buffer — commonly used as a profanity delay or seven-second delay — giving operators time to react before sensitive or inappropriate content is transmitted.

The system records and plays back uncompressed audio and video directly from server RAM, providing a low-latency delay from 1 second to 10 minutes while preserving original signal quality. Operators can control the delay using hotkeys, configurable X-Keys panels, or GPI commands.

When an incident occurs, the operator can apply real-time protection actions including video blur, blackout, replacement, audio mute, beep, jingle, or file playback. SL NEO Live Short Delay supports SDI, ASI, and IP workflows and is designed for live news, entertainment, sports, webcasts, and other productions where immediate editorial intervention may be required.

Highlights

Delay Buffer Playback

Short live delay from 1 second to 10 minutes for rapid on-air intervention, powered by a RAM-based buffer for minimal latency and fast response.
Intuitive Operator Interface
Configure on-screen panels, X-Keys, or GPI controls.
On-Air Censorship Control
Quickly censor unwanted video or audio with skip, blackout, blur, overlay, replacement, mute, beep, or audio jingle before it goes on air.
Combine sources
Supports SDI, ASI, and IP interfaces, accommodating resolutions up to 4K. Mixes various IP protocols such as IPTS, ST-2110, NDI, DASH, HLS, UDP, RIST, RTP, RTMP, SRT, Zixi and more.

Key Features

  • Real-time live protection
    • ▸ Short-delay operation for live broadcasts and webcasts
    • ▸ Immediate blocking of unwanted on-air moments
    • ▸ Optimized for «classic» live production where longer editorial delay is not possible
  • High-quality signal handling
    • ▸ Uses server RAM as a temporary delay buffer
    • ▸ Uncompressed input/output workflow for SDI environments
    • ▸ Maintains original signal quality while adding operator reaction time
  • Fast operator control
    • ▸ X-Keys panels support
    • ▸ Hotkey-based operation
    • ▸ GPI command support
    • ▸ Control from client workstation
  • Cencorship tools
    • ▸ Video and Audio Cut
    • ▸ Video Blur, Replacement and Blackout
    • ▸ Audio Mute and Beep
  • Multi-Format Signal Support
    • ▸ Unified support for SDI, ASI, and IP streams
    • ▸ Protocols: ST 2110, NDI, SRT, RIST, UDP, RTP, RTMP, HLS, DASH, Zixi
    • ▸ Resolution support up to UHD / 4K
    • ▸ Simultaneous handling of multiple signal types

Workflow

SL NEO Live Short Delay provides a controlled safety buffer between the incoming live signal and the on-air output. During normal, safe content, the system works in Delay Off mode and passes the live signal directly to air.

When a potentially risky segment begins, the operator switches Delay On. The signal is then routed through the delay buffer, giving the production team time to react before unwanted content reaches viewers. If necessary, the operator can trigger a predefined replacement action — blur, still image, black/fuzzy frame, silence, tone, jingle, or file playback.

Once the risky part is over, the operator switches back to Delay Off, and the system returns to normal live pass-through.

X-Keys panel support

In addition to the GUI interface, SL NEO Live Short Delay can be controlled via a fully configurable X-Keys panel. This gives the operator direct access to the most important commands and enables fast, precise actions during live broadcast.

Manual Incident Filtering: Clear Start / Clear Stop

Clear Start / Clear Stop is used when the operator needs to manually mark the beginning and end of an unwanted fragment.

When the operator notices an incident, they press Clear Start. The system takes the operator reaction time into account — for example, a 2-second safety margin — and starts the substitution from the actual beginning of the incident, not from the moment the button was pressed.

When the incident ends, the operator presses Clear Stop. The system keeps the substitution active until the exact marked end point and then returns the clean program back to air.

Typical use: longer unwanted fragments, incorrect speech, offensive gestures, unexpected visual content, or any situation where the operator needs to define both start and end points manually.

Quick Incident Masking: Clear Step

Clear Step is used as a quick “tap” action for short incidents.

When the operator catches a brief problem — for example, a sudden swear word or a short unwanted visual moment — they press Clear Step once. The system automatically applies a short predefined substitution, such as a 2-second blur, beep, silence, or replacement clip.

This mode is useful when the incident is very short and there is no need to manually mark both the start and the end.

Typical use: short profanity, one-frame/short visual issues, accidental sounds, brief unwanted actions.

Panic Protection: Clear All

Clear All is used as an emergency protection mode.

When a major or unpredictable incident occurs, the operator presses Clear All. The system immediately substitutes the entire available delay buffer with predefined safe content for the configured duration.

This is the fastest way to protect the broadcast when the situation is unclear, uncontrolled, or too long to mark precisely.

Typical use: serious on-air incidents, uncontrolled live scenes, major technical or editorial emergencies, or any situation where the safest decision is to fully cover the delayed segment.

Integrated Ecosystem

SL NEO Live Short Delay is fully integrated into the SL NEO Media Platform — a modular, software-defined environment where live ingest, delay, playout, monitoring, and system-control modules work together in real time.

Additional modules — including Program Player, Stream Capture, Multiscreen, and the SL NEO Base Module — can be combined to build complete live delay, content-moderation, and protected broadcast workflows.

Program Player
For playback of live and file-based content within delayed broadcast workflows
Stream Capture
For capturing live video and audio sources before delay and moderation
Multiscreen
For real-time monitoring of live and delayed video and audio signals during content-moderation workflows
SL NEO Base Module
For centralized system coordination, management, and control

Use Cases

Live News & Broadcast
Add a configurable safety delay to live news, interviews, debates, and other broadcasts where immediate editorial intervention may be required.
Live Events & Entertainment
Protect live concerts, award shows, reality programs, and entertainment broadcasts from unexpected or inappropriate content.
Sports Broadcasting
Apply real-time audio and video moderation to live sports coverage without interrupting continuous transmission.
Webcasts & Live Streaming
Add operator-controlled delay and content protection to live streams, webcasts, and OTT distribution workflows.

Technical Specifications

MINIMUM SYSTEM REQUIREMENTS

CPU 8 cores, 3 GHz or higher
Memory 16 GB DDR4 or higher
System Drive SSD for OS
OS Windows

Video Formats & Color Spaces

Formats 625i/525i, 720p, 1080i/1080p, 2K 2048×1080p, 2160p
Frame Rates 25 / 29.97 / 50 / 59.94 / 60 fps
Color Spaces BT.601 / BT.709 / BT.2020, HDR: SMPTE ST 2084, ARIB STD-B67

I/O A/V Streams

IP HLS and DASH (DASH only input)
MPEG-TS over UDP
MPEG-TS over RTP with FEC
NDI, RIST, RTMP, SMPTE ST 2110 Suite
SRT, Zixi
ASI EN50083−9 (coax) 214 Mbps per channel
SDI 12G SDI in accordance to SMPTE ST 2082−10
3G SDI in accordance to ST 424M and ST 425M-A/B
1.5G SDI in accordance to ST 292M
SD SDI in accordance with ST 259M
Analog blackburst reference (tri-level or bi-level)
Formats UHD: 2160p50/60M/60
HD: 1080p50/60M/60
1080i50/60M/60
1080p24M/24/25/30/30M
720p50/60M/60
SD: PAL, PAL-16×9, NTSC and NTSC-16x9
Audio Optional AES/EBU and Dante.

DEVICE SUPPORT

Panels XKEYS XK-24/60/80 Support
Alarms SNMP (SL NEO Software)

EDITORIAL EFFECTS

Video Cut, Blur, Replacement and Blackout
Audio Cut, Mute and Beep
CC/Subtitling Pass-through mode

LOOP RECORDING CODECS

Video SD: DV25, DVCPro
XDCAM IMX 30/40/50
HD: MPEG-2 420/422
H.264 420/422
XAVC 50/100
UHD: MPEG-2 420/422
H.264 420/422
XAVC 300

PLAYOUT CODECS

Video DVCAM, DVCPro 25/50 / HD 100
HDV 25
MPEG-2, MPEG 2 422
XDCAM IMX-30/40/50, EX 25/35, HD 18/25/35, HD 422 50
H.264 420/422
AVC-Intra 50/100
XAVC-S 420, XAVC-I/L 420/422
DNxHD 120 and 185
DNxHR-HQ, DNxHR-LB, DNxHR-SB
ProRes HQ, ProRes, ProRes LT, ProRes Proxy
HEVC
Audio Codecs AAC, AC-3, MPEG-1 L-I/II, MP3, Opus and 16/24-bit PCM, ADPCM
Graphics Still:
BMP
JPG
PNG
PSD
Targa TGA
TIFFAnimated (with Alpha):
TGA
QTRLE (MOV)
Hap Alpha (AVI, MOV)
JPGA (AVI)
PNG sequence
Video Containers MXF-OP1A, MXF-D10
Avid MXF (OP-Atom)
Sony XDCAM HD/422 (MXF-OP1A)
Sony XAVC 50/100/200/300/480/Long-GOP (MXF-OP1A)
P2 AVC-Ultra 50/100/200/300/480/LongG (MXF-OP1B)
Microsoft AVI, MPEG PS/TS
QuickTime MOV, DV DIFF
MP4, MPG, GXF

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