Agile Content - Agile ASR Subtitling
Category Video Processing
Automated Speech Recognition (ASR) is a technology used to generate subtitles for live content in near real-time, typically within seconds. An AI language model interprets the audio track and converts it into text, which is then integrated into the broadcast or OTT workflow. This feature is integrated into Agile Content's TV platform, seamlessly synchronizing with all essential components for content preparation and delivery. The operation of this service can be managed by Agile Content Operations Team.
With the integration of ASR, Agile Content enhances its platform’s capabilities, delivering a richer, more accessible, and user-friendly experience for audiences. ASR subtitling is now an integrated feature of Agile Streambuilder – our origin, re-packager, and media server for the OTT domain – which already includes OCR for converting DVB bitmaps to text, along with various other subtitle transformation options, reinforcing our commitment to delivering industry-leading subtitling solutions.
Problem Statement and Industry Challenges
The need for reliable, real-time subtitling solutions is paramount in live broadcasting and OTT services. However, the media industry faces several technical challenges:
• Synchronization: Ensuring subtitles align perfectly with audio and video to avoid disrupting the viewing experience.
• Accuracy: Accurate transcription is essential but challenging due to accents, background noise, and speaker overlaps.
• Format Compatibility: Subtitles must be adaptable across devices like TVs, smartphones, and computers.
• Real-Time Processing: Rapid subtitle generation is required to keep pace with live broadcasts.
• Bandwidth and Latency: Low-latency subtitle delivery is critical, especially in varying network conditions.
Agile Content addresses these challenges through an advanced ASR solution, seamlessly integrated within its existing TV platform infrastructure.
Agile Solution: ASR for live-content subtitling
Agile Content’s solution leverages AI-driven Automated Speech Recognition to transcribe audio from live broadcasts or linear feeds. The ASR engine, powered by Google Speech, supports over 100 languages, converting audio into text and formatting it into subtitles in seconds. With approximately a 2-second processing delay and configurable presentation delay, the subtitles are delivered nearly in real time, maintaining synchronization with the video.
How It Works:
• Audio Streamed to ASR: The audio is streamed as an SRT or TS feed, supporting audio in formats like AAC, FLAC, PCM, and OGG.
• Subtitle Delivery: The ASR engine generates WebVTT-format subtitles over HTTPS, with other formats available through Cavena-STU.
• Manageability: A REST-based management API allows for easy management of audio sources and ASR operations, giving customers complete control.
This integrated solution ensures that Agile Content can deliver high-quality, synchronized subtitles across formats and devices, enhancing accessibility and user engagement.
Key Differentiators
• Multilingual support: Integrated with top AI engines, Agile Content’s ASR technology supports over 100 languages, catering to a global audience.
• Device and platform agnosticism: Delivers high-quality subtitles on any device, screen size, or platform.
• Seamless platform integration: The ASR technology is seamlessly embedded within Agile Content’s TV platform, ensuring efficient workflow integration.
• Hybrid subtitling: A combination of ASR-generated captions with optional human review ensures high accuracy.
• Multi-engine ASR platform: Allows integration of various ASR engines, enabling selection of the most accurate solution per requirement.
• Low latency: Approximately 5-6 seconds, for ASR pop-up subtitles
• Broadcast and OTT: Seamlessly integrated into both broadcast workflows and end-to-end OTT offerings.
Impact and metrics of success
Agile Content’s ASR subtitling solution provides several key benefits that significantly improve user experience and operational efficiency:
• Enhanced accessibility: Automatic generation of subtitles and closed captions makes content accessible to viewers with hearing impairments.
• Global reach: Multilingual subtitle support enables content delivery to diverse international audiences.
• Metadata and searchability: Transcribed content enhance metadata, making videos more searchable.
• Contextual advertising: By understanding spoken content, platforms can deliver more targeted ads, improving revenue potential.
• Compliance with accessibility regulations: The ASR solution helps media providers meet accessibility standards, enhancing their compliance and market reach.
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