SDI Caption Encoders
PLUS introducing our latest encoder additions... the LEXI Text and LEXI Voice Encoders!
Which SDI encoder suits your requirements?
| SDI Encoder | LEXI Voice Encoder [NEW] | LEXI Text Encoder [NEW] | Encoder Pro | Encoder Pro Card |
|---|---|---|---|---|
| SKU | AIX-1 | UHD592 | HD492 | HD1492 |
| LEXI Voice | 5 Channels | 1 Channel | 1 Channel | |
| LEXI Text | 6 Channels | 6 Channels | 6 Channels | 6 Channels |
| HD Capability (HD 3G) | ||||
| 4K Capability (UHD 12G) | ||||
| Sound Separation and Clean Up | ||||
| LEXI Live Sync (formerly CC Match) | ||||
| Security & Compliance | SOC2 Compliant, Quarterly OS Update, Security Optimized Web Framework | SOC2 Compliant, Quarterly OS Update, Security Optimized Web Framework | Standard security updates | Standard security updates |
| Form Factor | 2RU | 1RU | 1RU | OpenGear Card |
Encoders to suit any SDI workflow
AI-Media offers a comprehensive range of SDI caption encoders empowered by state-of-the-art EEG technology. This innovative suite of caption encoders caters to diverse captioning requirements, providing cutting-edge solutions for a wide array of applications. And all of which interface with our flagship AI-powered automatic captioning solution, LEXI.
The suite of SDI caption encoders offered by AI-Media encompasses a range of features and functionalities to meet different captioning needs. Whether it’s live broadcasts, recorded videos, or interactive multimedia presentations, AI-Media’s encoders can adapt to the specific requirements of each scenario. These encoders are capable of capturing audio signals, analyzing them using advanced algorithms, and producing synchronized captions in real-time.
Our Products
LEXI Voice Encoder
The LEXI Voice Encoder (SKU: AIX-1) is AI-Media’s next-generation hardware platform powering LEXI Voice, delivering real-time captions and voice translations with enhanced performance, reliability, and security. Built for flexible deployment, it enables accessible, multilingual experiences across broadcast and live environments.
4K Broadcast Ready (12G-SDI) – Built for high-performance live production
Upgraded Processing Power – Future-proofed for AI integration of high-demand tasks
AI sound separation and clean up – blends background sound and cleaned up audio into the translated voice stream for an immersive experience
LEXI Live Sync (CCMatch) – configurable timing alignment for captions and translations with video feeds
Flexible Integration – SDI, IP, and cloud-connected environments
Latest OS Update – Updated to support Debian 13 with improved stability and security
EEG Cloud Integration – central management, remote monitoring, and diagnostics
UI/UX Enhancement – modernized interface for faster and simpler operation
| Model SKU | AIX-1 |
| Base Platform | Successor to HD492, built for next-generation captioning and voice translation workflows |
| Processing | GPU-accelerated for high-density LEXI Text and LEXI Voice workloads |
| Memory | DDR3 → DDR4 transition for improved throughput and stability |
| Video Performance | Native 4K 12G-SDI UHD support (HD → 4K upgrade from HD492) |
| PCIe Architecture | Upgraded from Gen 1 to Gen 3 (1× → 4× bandwidth performance increase) |
| Immersive Mixed Audio | Blends background noise into the translated voice stream for an immersive experience |
| Security Architecture | Front-panel redesign with enhanced physical security controls |
| Compliance & Encryption | SOC2-compliant with SSL certificate management |
| Form Factor | 2 RU redesigned chassis optimized to house GPU for improved processing |
| LEXI Live Sync | (CC Match) Synchronization of captions, translations, and dubbing output with live video |
| Included LEXI Capacity | Up to 6 × LEXI Text and 5 × LEXI Voice channels (1 reserved for primary feed) |
| Maintenance | Quarterly OS updates for continuous security and stability |
The LEXI Voice Encoder is offered via AI-Media’s Hardware-as-a-Subscription (HaaS) model – replacing traditional Capex with a future-ready approach. Benefits of this model include:
- Opex, Not Capex: Predictable costs with no upfront hardware investment.
- Minimum 12-Month Term, then cancel anytime: Simple, flexible commitment aligned to operational needs.
- Always Current: Access the latest LEXI encoders and AI features.
- Built-In Support: Includes technical support, product enhancements and security updates.
- Future-Ready: Easily adapt from SDI to ST 2110, IP, cloud, or new AI workflows.
- Reduced Risk: Rapid replacement of defective hardware minimizes downtime and eliminates repair costs
For full commercial details, please contact your AI-Media account manager or contact us via the Start a Conversation form.
LEXI Text Encoder
The LEXI Text Encoder (SKU: UHD592) is the next-generation upgrade to AI-Media’s flagship Encoder Pro (HD492), trusted by broadcasters worldwide. It delivers ultra-precise real-time captions with improved performance, stronger security, and native 4K support.
Built for professional live production, the LEXI Text Encoder features upgraded hardware and modernized software to support fast, reliable captioning workflows.
HD to 4K Ready – upgraded video handling for evolving production standards like 12G-SDI UHD
Lightweight Form Factor – improved rack mounting efficiency for easier deployment
Flexible Integration – SDI, IP, and cloud-connected environments
Latest OS Update – Updated to support Debian 13 with improved stability and security
EEG Cloud Integration – central management, remote monitoring, and diagnostics
UI/UX Enhancement – modernized interface for faster and simpler operation
EEG Cloud Integration – central management, remote monitoring, and diagnostics
UI/UX Enhancement – modernized interface for faster and simpler operation
| Category | Detail |
|---|---|
| Model SKU | HD592 |
| Base Platform | Successor to Encoder Pro (HD492) for real-time captioning and limited voice translation workflows |
| Processing | Upgraded performance from Intel Gen 10 CPU (4 Core) → AMD Epyc CPU (12 Core) |
| Memory | DDR3 → DDR4 transition for improved throughput and stability |
| Video Performance | Native 4K 12G-SDI UHD support (HD → 4K upgrade from HD492) |
| PCIe Architecture | Upgraded from Gen 1 to Gen 3 (1× → 4× bandwidth performance increase) |
| Form Factor | 1 RU, lightweight chassis for improved rack density and mobility |
| Relay Bypass | Ensures continuous signal flow during network or hardware failover |
| Compliance & Encryption | SOC2-compliant with SSL certificate management |
| Included LEXI Capacity | Up to 6 × LEXI Text and 1 × LEXI Voice channels |
| Maintenance | Quarterly OS updates for continuous security and stability |
The LEXI Text Encoder is offered via AI-Media’s Hardware-as-a-Subscription (HaaS) model – replacing traditional Capex with a future-ready approach. Benefits of this model include:
- Opex, Not Capex: Predictable costs with no upfront hardware investment.
- Minimum 12-Month Term, then cancel anytime: Simple, flexible commitment aligned to operational needs.
- Always Current: Access the latest LEXI encoders and AI features.
- Built-In Support: Includes technical support, product enhancements and security updates.
- Future-Ready: Easily adapt from SDI to ST 2110, IP, cloud, or new AI workflows.
- Reduced Risk: Rapid replacement of defective hardware minimizes downtime and eliminates repair costs
For full commercial details, please contact your AI-Media account manager or contact us via the Start a Conversation form.
Encoder Pro
Encoder Pro (SKU: HD492) is the broadcast standard 1RU SDI caption encoder that offers a low operational cost and low-latency caption display. It works with most common broadcast video formats and meets varying broadcast and streaming needs, from local broadcasts, to municipal, educational and corporate meetings. The Encoder Pro hardware supports HD video standards up to 1080P on 3 Gbps SDI transport. For support for 4K and HDR signals using 12 Gbps SDI, see the Encoder 4K.
Encoder Pro offers a range of benefits:
Simplified, End-to-End Captioning
-
- Easily combine Encoder Pro with Ai-Media’s LEXI automatic captions or human captions for a seamlessly integrated, end-to-end solution powered by our world-leading iCap Cloud Network.
Support for Regional Broadcast Standards
-
- The Encoder Pro SDI caption encoder is suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard). This closed caption encoder ensures compliance with regional standards while delivering precise, real-time captions for various applications.
Low Operational Cost
-
- With a standard broadband connection, the iCap Cloud Network eliminates the need for a pair of phone lines per channel (or expensive satellite equipment) for both broadcasters and captioners.
Futureproofed Technology
-
- Encoder Pro and the iCap Cloud Network can make a future transition to virtual and cloud-based architectures as smooth as possible.
- Encoder Pro has an optional “Alta” module for direct output of SMPTE 2110-40 IP ancillary data. Or you can switch your iCap Cloud Network access codes at any time to pure software encoding products such as Alta for 2110 or MPEG-TS that are currently connecting emerging OTT delivery and IP production technologies into the same interoperable network.
- Combine ENT (Electronic Newsroom Technique) captioning for scripted newscasts with verbatim automatic captioning for unscripted segments and fast-breaking news
- ENT Caption Ready: Encoder Core also converts text input from your newsroom computer teleprompter feed into CEA-608/708 captions.
Remote Administration and Monitoring
-
- AI-Media’s administrative cloud lets broadcasters and authorized transcription agencies monitor, add, change or remove users and encoders from their account. Broadcasters can view captioner activity and retrieve connection logs on any encoder in the chain remotely from a web browser.
Multiple Output Destinations
-
- Encoder Pro is more than broadcast television captioning. Route incoming captions to scoreboards, mobile devices and web streaming services anywhere with a host of available modules accessed through the encoder interface.
Live Captioning Input Through:
-
- iCap Network
- ComCC modem virtualization system
- Direct TCP/IP or Telnet
- Teleprompters, Voice Recognition systems, and Automation servers using RS-232
Modules Available:
-
- LEXI Live Sync caption/video synching
- Streaming text output to YouTube Live Events, Wowza Media Server, UVault, and more
- Video feedback to captioner (iCap Video) for position monitoring
- CTE-104 VANC insertion from GPI triggers or TCP/IP messaging
- Record incoming captioning with CCRecord
- Timed playout of captioning files with CCPlay
-
- Optional SMPTE 2110-40 Simulcast module for transmission of SDI VANC. contents over IP using 2110.
- Synchronization of live captions and program video/audio with CCMatch technology.
- SCTE-104 VANC insertion from GPI triggers or TCP/IP messaging.
- Compatibility with 4K SDI “quad link” systems.
- Support for caption input through a built-in Dial-up Modem, Direct TCP/IP or Telnet, Teleprompters, Voice Recognition systems, and Automation servers using RS-232.
- Relay bypassed master video path for all formats of SDI video up to 3 Gbps.
- Auxiliary SDI video input for bridging caption data from one program to another.
- Additional built-in SDI decoder output shows on-screen caption burn-in.
- GPI caption relocation triggering for FCC-required emergency bumping.
- Insertion of V-Chip and XDS data.
- Simultaneous support for up to six languages.
- The Encoder Pro SDI caption encoder is suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard.)
- This encoder supports iCap so you can easily connect to LEXI Automatic captioning solution or live captioners
The Encoder Pro is offered via AI-Media’s Hardware-as-a-Subscription (HaaS) model – replacing traditional Capex with a future-ready approach. Benefits of this model include:
- Opex, Not Capex: Predictable costs with no upfront hardware investment.
- Minimum 12-Month Term, then cancel anytime: Simple, flexible commitment aligned to operational needs.
- Always Current: Access the latest LEXI encoders and AI features.
- Built-In Support: Includes technical support, product enhancements and security updates.
- Future-Ready: Easily adapt from SDI to ST 2110, IP, cloud, or new AI workflows.
- Reduced Risk: Rapid replacement of defective hardware minimizes downtime and eliminates repair costs
For full commercial details, please contact your AI-Media account manager or contact us via the Start a Conversation form.
Encoder Pro Card
The Encoder Pro Card (SKU: HD1492) SDI caption encoder offers industry-standard captioning and HD VANC encoding for the OpenGear platform with built-in iCap Cloud Network access. No audio couplers are needed – simply plug and play.
You can easily combine the Encoder Pro Card with AI-Media’s LEXI automatic captions or human captions for a seamlessly integrated, end-to-end solution powered by our world leading iCap Network.
Employ up to 10 cards per open gear frame for superior density.
Encoder Pro Card offers a range of benefits:
Simplified, End-to-End Captioning
-
- Easily combine Encoder Pro Card with Ai-Media’s LEXI automatic captions or human captions for a seamlessly integrated, end-to-end solution powered by our world-leading iCap Cloud Network.
Support for Regional Broadcast Standards
-
- The Encoder Pro Card SDI caption encoder is suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard.)
Low Operational Cost
-
- With a standard broadband connection, the iCap Cloud Network eliminates the need for a pair of phone lines per channel (or expensive satellite equipment) for both broadcasters and captioners.
Futureproofed Technology
-
- Encoder Pro Card and the iCap Cloud Network can make a future transition to virtual and cloud-based architectures as smooth as possible.
- Encoder Pro Card has an optional “Alta” module for direct output of SMPTE 2110-40 IP ancillary data. Or you can switch your iCap Cloud Network access codes at any time to pure software encoding products such as Alta for 2110 or MPEG-TS that are currently connecting emerging OTT delivery and IP production technologies into the same interoperable network.
- Combine ENT (Electronic Newsroom Technique) captioning for scripted newscasts with verbatim automatic captioning for unscripted segments and fast-breaking news
- ENT Caption Ready: Encoder Core also converts text input from your newsroom computer teleprompter feed into CEA-608/708 captions.
Remote Administration and Monitoring
-
- AI-Media’s administrative cloud lets broadcasters and authorized transcription agencies monitor, add, change or remove users and encoders from their account. Broadcasters can view captioner activity and retrieve connection logs on any encoder in the chain remotely from a web browser.
Multiple Output Destinations
-
- Encoder Pro Card is more than broadcast television captioning. Route incoming captions to scoreboards, mobile devices and web streaming services anywhere with a host of available modules accessed through the encoder interface.
Live Captioning Input Through:
-
- iCap Cloud Network
- ComCC modem virtualization system
- Direct TCP/IP or Telnet
- Teleprompters, Voice Recognition systems, and Automation servers using RS-232
Modules Available:
-
- LEXI Live Sync caption/video synching
- Streaming text output to YouTube Live Events, Wowza Media Server, UVault, and more
- Video feedback to captioner (iCap Video) for position monitoring
- SCTE-104 VANC insertion from GPI triggers or TCP/IP messaging
- Record incoming captioning with CCRecord
- Timed playout of captioning files with CCPlay
-
- Compatible with Ross Dashboard monitoring and control
- Optional SMPTE 2110-40 Simulcast module for transmission of SDI VANC. contents over IP using 2110.
- Synchronization of live captions and program video/audio with CCMatch technology.
- SCTE-104 VANC insertion from GPI triggers or TCP/IP messaging.
- Compatibility with 4K SDI “quad link” systems.
- Support for caption input through a built-in Dial-up Modem, Direct TCP/IP or Telnet, Teleprompters, Voice Recognition systems, and Automation servers using RS-232.
- Relay bypassed master video path for all formats of SDI video up to 3 Gbps.
- Auxiliary SDI video input for bridging caption data from one program to another.
- Additional built-in SDI decoder output shows on-screen caption burn-in.
- GPI caption relocation triggering for FCC-required emergency bumping.
- Insertion of V-Chip and XDS data.
- Simultaneous support for up to six languages.
- The Encoder Pro SDI caption encoder is suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard.)
- This encoder supports iCap so you can easily connect to live captioners or ASR solutions.
- Simultaneous support for up to six languages.
- The Encoder Pro SDI caption encoder is suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard.)
The Encoder Pro Card is offered via AI-Media’s Hardware-as-a-Subscription (HaaS) model – replacing traditional Capex with a future-ready approach. Benefits of this model include:
- Opex, Not Capex: Predictable costs with no upfront hardware investment.
- Minimum 12-Month Term, then cancel anytime: Simple, flexible commitment aligned to operational needs.
- Always Current: Access the latest LEXI encoders and AI features.
- Built-In Support: Includes technical support, product enhancements and security updates.
- Future-Ready: Easily adapt from SDI to ST 2110, IP, cloud, or new AI workflows.
- Reduced Risk: Rapid replacement of defective hardware minimizes downtime and eliminates repair costs
For full commercial details, please contact your AI-Media account manager or contact us via the Start a Conversation form.
Easily combine our SDI video encoders with:
Portland Trail Blazers
Portland Trail Blazers revolutionizes captioning with AI-powered technology
The Challenge
The Portland Trail Blazers, one of the NBA’s best-known franchises, previously used live human captioners to provide accessibility for its game coverage. However, its technical team was spending significant time managing captioning resources, and the cost of human captions soon exceeded its production budget.
The Solution
The Trail Blazers saved significant time and money with an end-to-end live captioning solution that combined our AI-powered LEXI automatic captions with Ai-Media’s iCap Encode Pro. LEXI delivered up to 98% caption accuracy while also decreasing per-hour costs, while iCap Encode Pro streamlined workflows and ensured low-latency captions
Products Used
- LEXI
- iCap Encode Pro
What our clients are saying
High Accuracy & Cost-Efficiency
Versatile & Easy-to-Use
Dedicated, Timely Support
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Off the Cloud & On Prem: How Lexi Local Maximizes Captioning Security & Reliability
Learn how Ai-Media’s on-premises captioning solution, Lexi Local, can help you ensure maximum data security.Frequently Asked Questions
All our IP and SDI caption encoders are compatible with third-party automated and human captioning services. However, by using AI-Media’s LEXI automatic captions or human captions, you can build an end-to-end solution without the costly and time-consuming need to integrate third-party offerings.
The LEXI Live Sync delay parameter allows our IP caption encoder users to match video and audio with live captions with perfect synchronization to the end viewer. LEXI Live Sync also aids in production and clipping by making sure live captions are contained completely within a segment, without overhang from programming into commercial blocks.
Our SDI and IP captioning encoders are suitable for broadcast TV in the USA (in CEA-708 Standard), or in DVB regions like the UK, Australia, and the EU (in OP-47/DVB Teletext standard.)
Unlike most vendors, AI-Media is a one-stop shop of live caption solutions and tailored human services. We offer all the captioning technology you need in one place, including a range of caption delivery solutions that seamlessly integrate with our AI-powered LEXI automatic captions and Premium human captioning service.
With a truly end-to-end solution from AI-Media, you can ensure you have all the technology and human services you need to caption your content, whether live or recorded. This eliminates the time-consuming and costly need to integrate third-party technology.
Yes, LEXI Text automatic captions work with our entire suite of encoders. This includes:
- Alta: A virtualized, API-powered IP video encoder that saves time and reduces costs with next-gen workflows.
- Encode Pro: An HD-SDI encoder trusted by major TV networks worldwide, offering low-cost, low-latency caption display.
- Encode 4K: A native 12G encoder that allows you to fLEXIbly work with broadcast, live stream and in-room spaces while encoding in 4K or HD-SDI.
- ALTA RTMP: A budget-friendly cloud encoder that makes it easy to add captions to RTMP/S streams.
The iCap Cloud Network offers a range of benefits, including:
- Higher bandwidth audio to captioners for increased clarity and word accuracy
- Enhanced security, with all iCap connections encrypted and authenticated
- Seamless transitioning from hardware-driven to software-controlled environments
- Seamless interoperability with AI-Media’s range of captioning solutions
- 24/7/365 connectivity to thousands of certified third-party caption partners worldwide
Yes, the Encoder Pro supports open captions.
Firmware upgrades can be applied through the Update page of the Encode Pro web portal. They can also be done by plugging in a USB drive with the updates into the front of the device.
Both the primary and auxiliary video paths through the encoder have relay protection, in case of power outage. You would see a brief interruption if the encoder lost video, but then video coming through the device would be maintained because of delays.
Yes, there is a line for the iCap connection of the encoder on the front LCD screen of the device. It will shine green if the connection is good, and red if there’s no connection. If it is in a good connection state, the LCD screen will read ‘iCap is ready’. If there is an error, the LCD screen will read ‘iCap Error’ or ‘Connection Error’. The front panel will also indicate if LEXI specifically is active at any given time.
The Encoder Core (formerly known as the EN537) is an affordable alternative for broadcasters requiring basic caption insertions. It uses LEXI to generate captions & supports a serial port TCP/IP connection, and can also be equipped with an optional telco modem. It does not support the iCap network in order to connect with human captioners.
Try pulling the power cord out of the device and leaving it unplugged for ten seconds. If that doesn’t work, please contact our Support Team.
Yes, the SDI signal with captions can also be sent to a separate streaming media encoder, and then converted to RTMP for a live streaming workflow.
The service fee for the Encoder 4K (AV650) includes iCap and hardware support, vs just hardware support on the Encoder PRO (HD492). There’s no actual difference in delivered service.
Sort of. You can use the CCPlay module for the Encoder Pro (HD492) / Encoder 4K (AV650) to load an existing caption file onto the encoder, and then play back content that will embed the captions as the video passes through.