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.
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.
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.
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.
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.
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:
| CPU | 8 cores, 3 GHz or higher |
| Memory | 16 GB DDR4 or higher |
| System Drive | SSD for OS |
| OS | Windows |
| 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 |
| 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. |
| Panels | XKEYS XK-24/60/80 Support |
| Alarms | SNMP (SL NEO Software) |
| Video | Cut, Blur, Replacement and Blackout |
| Audio | Cut, Mute and Beep |
| CC/Subtitling | Pass-through mode |
| 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 |
| 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 |
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