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Closed Captions in the Phenix system
Published Captions
The Phenix Encoder extracts closed captions from video data found in MPEG transport streams (MPEG-TS) and sends them through the Phenix system as data messages. The data messages can be presented by the Phenix SDK on iOS and Android.
The JSON format allows the SDK to distinguish between different streams by examining the service ID (CC1 through CC4). Users of the SDK client can select any one of those streams at a time.
Native Client-Side Captions
On both Android and iOS platforms, users can turn on live captioning to convert words into text that is shown on the device's screen. Each platform has its own way of managing live captions.
v2025-03-24T21:12:24.000Z