Two terms. Two different jobs. Both matter if you want to build an inclusive, globally-reaching live stream. Here's the definitive guide and how StreamTranslate handles both automatically.
Add Captions to Your StreamThe terms "closed captions" and "subtitles" get used interchangeably, but they serve different audiences and carry different information.
Closed captions are designed for viewers who cannot hear the audio, either because they're deaf or hard of hearing, or because they're watching with the sound off. Closed captions include everything: dialogue, speaker identification, sound effects like [EXPLOSION], music cues like [UPBEAT MUSIC PLAYING], and ambient sound descriptions. The goal is a complete audio substitute in text form.
Subtitles assume the viewer can hear but doesn't understand the language. They transcribe spoken dialogue and translate it, nothing more. A subtitle track doesn't explain that someone is laughing or that a gun just fired; it just converts words to text, often in a different language.
For live streamers, this distinction matters because your audience includes both groups. Deaf and hard of hearing viewers need captions. International viewers who don't speak your language need translated subtitles. And viewers watching with the sound off, which is a massive segment especially on mobile, benefit from both.
Includes all audio cues including speech, sound effects, music, and speaker ID. Designed for deaf and hard of hearing viewers. Required for full accessibility compliance in broadcast contexts.
Transcribes and translates dialogue only. Designed for viewers who speak a different language. Essential for reaching international audiences on Twitch, YouTube, and Kick.
Real-time transcription via our industry-leading speech AI plus instant translation into 125+ languages. Rendered as an OBS browser source overlay on your live stream with no post-processing required.
The honest answer: both. You need closed captions if you want to be accessible to the deaf and hard of hearing community, if you stream late at night when viewers are more likely to watch muted, or if you want to comply with accessibility best practices.
You need translated subtitles if you stream in English and want to reach audiences in Brazil, Japan, Korea, Germany, France, or any of the 125+ language markets where your content could find a home. Non-English markets often have massive, underserved streaming audiences who would watch your content if only they could understand it.
StreamTranslate handles both use cases through a single OBS browser source. It uses our industry-leading speech AI to transcribe your speech in real time with sub-second latency and simultaneously translates it into whichever language the viewer has selected. Every viewer on every platform sees the relevant text without you having to configure anything per-stream.
Ready to add captions and subtitles to your stream? Follow the setup guide or check pricing to get started in under 10 minutes.
Closed captions include all audio information including dialogue, sound effects, music cues, and speaker identification. Subtitles typically only transcribe spoken dialogue and are used for translation. For live streaming, captions serve deaf/HOH viewers while subtitles serve international audiences.
Most streamers benefit from both. Captions help deaf and hard of hearing viewers follow your stream, while translated subtitles open your content to international audiences. StreamTranslate delivers both simultaneously via OBS browser source.
StreamTranslate handles both. It transcribes your speech in real time for caption purposes and translates it into 125+ languages for subtitle purposes, all displayed as an OBS browser source overlay on your stream.
Yes. Because StreamTranslate renders captions as a visual overlay baked into your stream via OBS, every viewer on every platform sees the captions without needing to enable anything.
StreamTranslate uses our industry-leading speech AI, one of the most accurate real-time speech recognition models available. Latency is under 1 second and accuracy is optimized for streamer vocabulary, gaming callouts, and conversational speech.