One-click to add bilingual, translated, or original subtitles to videos, export ready-to-share videos without editing, and get subtitle files.
From raw video to captioned masterpiece in 3 seamless steps
Simply drag and drop your video or audio file. We support various formats including MP4, MOV, AVI, and MP3.
Recognize speech in 100 languages, then choose a target language from the translation list to create translated or bilingual subtitles.
Our AI will automatically transcribe and translate your video. Download subtitles in various formats or embed them directly.
Engineered for video creators, educators, international businesses, and media teams
Streamlined end-to-end pipeline from media upload, speech transcription, alignment to translated subtitle rendering with just one click.
Recognize speech in 100 languages, then choose a target language from the translation list to create translated or bilingual subtitles.
Quick turnaround time with advanced GPU-accelerated AI models, delivering accurate subtitles within seconds for typical video clips.
Export original subtitles, translated subtitles, or download full videos with crisp, lossless embedded hard subtitles ready for sharing.
Best for
Yes. Choose bilingual mode to display the original language and translated subtitles together on the video.
Yes. Quantum Subtitle features native support for mixed-language speech recognition and code-switching. It accurately transcribes audio containing multiple languages spoken together—such as Chinese and English tech terms or Spanish and English conversations—without losing vocabulary or producing phonetic errors.
Yes. The workflow is designed for both captioned video output and subtitle file workflows such as SRT export.
The upload flow supports common video and audio formats, including MP4, MOV, AVI, MKV, MP3, WAV, and M4A.
High-performance AI audio & video workflow built for creators and global teams: fast, accurate, private, and subscription-free.
Upload and process audio & video in minutes without complex software.
Accurately transcribe code-switching speech, dialects, and audio events.
All processing is strictly isolated and uploaded files are automatically wiped within 24 hours.
No expensive subscriptions. Pay only for what you use with permanent credits that never expire, plus free trial for all tools.