Generate bilingual subtitles while watching local videos on Mac

Generate bilingual subtitles while you watch.

Open a local video, choose the spoken and target languages, and watch with original and translated subtitles generated on your Mac.

Local video playback

Open common video formats from your Mac, Downloads folder, or folders you choose.

Bilingual AI subtitles

Generate speech subtitles and display the original and translated text together.

Private by design

Local media, subtitle text, and translations are not uploaded to cloud AI services.

More than a subtitle overlay

• Your own User TV URLs: Add an authorized HTTP/HTTPS live URL, such as HLS, for live AI captions and translation. User TV is free; no channels, catalog, or playlist imports are supplied.
• Media browsing and controls: Browse recent media and Downloads, drag files into the app, use keyboard shortcuts, and adjust subtitle sources and display.
• Speech models and language packs: Choose local speech models and prepare translation language packs in Settings; performance depends on your Mac and the source.
• Common formats, not every codec: Recognizes MP4, MOV, MKV, AVI, WebM and common audio formats. Local matching SRT and network SRT/VTT subtitles depend on the source; file extensions do not guarantee codec compatibility.

From local video to bilingual playback

• Open your video: Choose a local file you are authorized to watch.
• Set the language pair: Select the spoken language and the subtitle language you want to read.
• Watch and understand: Haibao generates subtitles during playback so the video remains the center of the experience.

Your video stays on your Mac

Core speech recognition and subtitle translation use on-device processing. Haibao does not upload your local video, file path, transcript, or translation to a cloud AI service.

• macOS 26.2 or later. Apple silicon is recommended for AI performance. Feature availability depends on version and media compatibility.