This article describes a solution for adding multi-language captions and audio dubbing to live streaming events using AWS Media Services and SyncWords AI platform.

• Traditional 608/708 embedded captions support only two languages and limited character sets
• SyncWords integrates with AWS Elemental MediaLive and MediaPackage via simple API integration
• Creates secondary manifest with captions while preserving original manifest as backup
• Synchronizes captions and translations using HLS latency calculations for seamless viewing
• Eliminates typical 3-4 second caption delay in live events
• Enables multiple language captions without specialized hardware or pipeline changes
• Supports Unicode character sets including Chinese, Japanese, and Korean
• Scales to unlimited channels cost-effectively without dedicated captioning hardware

The solution provides accessible, synchronized multi-language captioning for live OTT streaming without disrupting existing workflows.