Permanently embed Korean subtitles directly into your video pixels. Burned-in captions display on any device or platform—perfect for Instagram, TikTok, LinkedIn, and social media.
Upload your video file from your computer, Dropbox, or Google Drive. Sonix supports MP4, MOV, AVI, and 40+ other video formats up to 4K.
Sonix AI automatically transcribes your Korean video and generates perfectly-timed subtitles with speaker identification.
Review and polish your transcript in our browser-based editor. Correct any errors and adjust timing to ensure perfect synchronization.
Customize your subtitle appearance: font family, size, color, background, and position. Preview styles in real-time before rendering.
Sonix burns your Korean subtitles directly into the video pixels. Processing time depends on video length and resolution.
Burn-in (hardcoded) subtitles are permanently embedded in the video pixels and cannot be turned off. Soft subtitles (SRT/VTT) are separate files that viewers can toggle on/off. Burn-in is ideal for social media where caption support is inconsistent.
Yes! Sonix offers extensive styling options including font family, size, color, background color, opacity, and position (top, middle, bottom). Preview your style in real-time before rendering.
Sonix preserves your original video quality during the burn-in process. We use high-quality rendering to ensure subtitles look crisp and professional without degrading your footage.
Processing time depends on video length and resolution. A typical 10-minute 1080p video takes about 5-10 minutes to render. You'll receive an email notification when your video is ready.
Sonix exports burned-in videos as MP4 files with H.264 encoding—the most universally compatible video format. Your video will play on virtually any device or platform.
No. Once subtitles are burned in, they're permanent. We recommend thoroughly reviewing and editing your transcript in the Sonix editor before rendering. You can always create a new burn-in version if needed.
Most social platforms auto-play videos without sound. Burn-in subtitles ensure your message is seen even on mute.
Burned-in subtitles display on any device, any player, anywhere—no caption support required.
Match your brand with custom fonts, colors, and styling that stays consistent across all platforms.
Unlike soft captions that can be hidden or unsupported, burn-in subtitles are always visible to every viewer.
It was super easy, affordable, and accurate!
Great product. Been waiting for this.
The interface and editor experience were great. I also like the way you handle speaker identification and naming. Pretty slick. Nice timestamp frequency / formatting too.
Sonix saves me 60% of the time editing. No more manual trascription nightmare with writing down timecodes, and sending emails. I think you are changing the game here! Bravo :)
Your service is very impressive and I love the UI. And that's an AI expert speaking ;-)
The accuracy for the translation was the best from all the other sites and apps I tried.
I’ve now used Sonix.ai twice, and find the service simple and accurate. It’s exactly what I’ve been looking for to get text from audio and video recordings.
Found you through Google. Super easy to use. Transcribed 98% correctly even though it was not a great audio file.
Upload your video and get professional burned-in Korean subtitles. Start with 30 minutes minutes free—no credit card required.
AI transcription and translation in 53+ languages.
