We use analytics cookies to understand how visitors use our website and to improve its performance.

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 live broadcast delay solution designed to prevent unwanted content from reaching air. In live production, a short safety buffer—commonly known as Seven Second Delay or Profanity Delay—is used to give operators time to intervene before transmission. Within the SL NEO platform, this function is implemented as an optional software module that records and plays back uncompressed audio and video in the server RAM, providing a low-latency buffer with configurable delay from 1 second to 10 minutes. The system preserves original SDI signal quality while enabling immediate operator control via hotkeys, external USB panels, or GPI commands. It allows rapid intervention to block offensive language, obscene gestures, technical issues, or any other undesirable content in real time.

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

The SL NEO Live Short Delay is fully integrated into the SL NEO media services platform — a modular, software-defined environment where specialized modules operate together in real time across one or more hardware platforms.

Additional modules — including TS Multiplexer, Capture Stream and other workflow components — can be integrated to create a fully tailored broadcast solution:

SL NEO TS Multiplexer
For stream preparation and validation.
SL NEO Playout
For localization, commercial block insertion, and channel branding.
SL NEO Capture
For receiving and capturing feeds.
SL NEO Base Module
For coordination, management and control for all the system

Use Cases

Live News with Editorial Risk
Insert delay buffers and enable redaction to filter profanity, inappropriate statements, or sensitive visuals during live reporting.
Live events and entertainment shows
Manage sensitive crowd reactions or unexpected audio-visual moments in real time.
Live production
To provide a safety delay for blocking undesirable content before transmission.

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
TIFF

Animated (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

All product names, logos, and brands are property of their respective owners.

Documents & Resources