Transform your videos with professional captions. Sonix automatically generates accurate subtitles with frame-perfect timing, then lets you customize, style, and export to any format—including burnt-in captions.
Automatically split your transcript into perfectly-timed captions. Control character limits, line count, and duration to meet any platform's requirements—from YouTube's recommendations to broadcast standards.
Fine-tune subtitle timing with our visual timeline. Drag edges to adjust start and end points, or click any word to hear the audio and verify timing. Frame-perfect precision without complex software.
Adjust subtitle timing down to the millisecond for perfect synchronization. Easily shift all captions or individual lines to match your video perfectly, even after edits or speed changes.
Customize fonts, colors, backgrounds, and positioning. Create captions that match your brand or meet accessibility requirements. Preview changes in real-time before export.
Permanently embed subtitles directly into your video file. Perfect for social media where viewers can't toggle captions. Sonix burns in your styled captions and delivers a ready-to-share video.
Download subtitles in SRT, VTT, SBV, STL, DFXP, and more. Export to professional formats like FCPXML, EDL, and AVID markers for seamless editing software integration.
Generate subtitles in 53+ languages from a single upload. Translate your transcript and export captions in multiple languages to reach global audiences.
View all languagesProduction teams across film, television, and digital media rely on Sonix to generate fast, accurate subtitles and captions. This includes documentary filmmakers, unscripted production companies, post-production houses, broadcasters, and corporate marketing teams creating video for campaigns, social media, training, and customer communications.
Upload your video or audio file to Sonix, and our AI transcribes it with word-level timestamps in minutes. The transcript automatically converts to subtitle format—you can then split captions to your preferred length, adjust timing, customize styling, and export to any format. The entire process takes about 5 minutes per hour of video.
Sonix exports subtitles in 15+ formats including SRT (SubRip), VTT (WebVTT), SBV (YouTube), STL, DFXP/TTML, FCPXML (Final Cut Pro), EDL, AVID markers, and more. Each format is properly formatted for its intended platform, with correct timecode formats and character encoding.
Yes. Sonix's burn-in feature permanently embeds your styled subtitles into the video file. Choose your font, color, size, background, and position, then Sonix renders a new video with captions baked in. This is ideal for social media platforms where viewers watch with sound off and can't enable captions.
Sonix generates subtitles with millisecond-level precision. Each word is timestamped to within 100ms of when it's spoken. Our visual timeline editor lets you fine-tune any timing down to the frame. The result is perfectly synchronized captions that match lip movements and audio cues.
Yes. After transcribing your video, you can translate the transcript into any of 53+ languages with one click. Each translation maintains subtitle timing, so you can export properly-timed captions in Spanish, French, German, Chinese, Japanese, and dozens more. This makes it easy to reach international audiences.
Subtitles display dialogue for viewers who can hear but may not understand the spoken language. Closed captions are designed for deaf and hard-of-hearing viewers—they include speaker identification and descriptions of important sounds. Sonix creates both: standard subtitles for any language, and SDH (Subtitles for the Deaf and Hard of Hearing) with full accessibility features.
Subtitle workflows fall apart when the accuracy isn't there. With Sonix, the transcripts are solid and the editing interface makes it quick to produce clean, polished subtitles.
Generate subtitles for an hour of video in about 5 minutes. No more typing every word or paying transcribers by the minute. Upload your video and get perfectly-timed captions automatically.
Word-level timestamps ensure captions appear exactly when words are spoken. Our visual timeline editor makes it easy to fine-tune timing for perfect lip-sync, even with fast dialogue or overlapping speakers.
Export to 15+ subtitle formats for any workflow. Whether you need SRT for YouTube, VTT for web players, or FCPXML for Final Cut Pro, Sonix delivers properly formatted files ready to use.
Create scroll-stopping content with burnt-in captions. Customize styling to match your brand, then download a video with subtitles permanently embedded—perfect for Instagram, TikTok, and LinkedIn.
YouTube's auto-captions are view-only and limited to their platform. Sonix gives you complete control: edit every word, adjust timing to the millisecond, customize styling, and export to any format. You own your caption files and can use them anywhere—social media, broadcast, streaming platforms, or your own website.
Professional captioning services charge $1-3 per minute of video and take days to deliver. Sonix costs $10 per hour (about 8 cents per minute) and delivers in minutes. For most content, Sonix accuracy matches professional services. When you need 100% accuracy, our editor makes it fast to review and polish the results.
Yes. Sonix exports to professional formats including SCC for broadcast, DFXP/TTML for streaming platforms, and FCPXML for post-production workflows. Our subtitles meet FCC captioning requirements and international broadcast standards when properly reviewed.
Sonix maintains your original video quality when burning in captions. You control the output resolution and format. For social media, we optimize file size while preserving visual quality. For professional use, you can specify exact encoding settings.
Sonix transcription service has dramatically reduced the time I need to spend on clients' interviews. Tremendous help!
I love Sonix.ai. They're fast and clean in transcription; they give 98% accuracy in your transcript. I enjoy every of my experience with Sonix...
It's incredibly fast, and it sets the timing for subtitles perfectly. I dread having to time everything myself, and with Sonix I can do that just by pressing Enter!
I heard about you from my friend. I found my transcription to be almost exactly what is in the audio file. Love it...continue what you are doing. Sonix is excellent. I appreciate t...
Sonix is AWESOME and extremely accurate. This software has it all. I wish that all of the software that I use on a daily basis had the complete and thoughtfully created functionali...
I LOVE Sonix.
I have tested your product among others, and I have to say, Sonix provides the best results, a really great product!!!
Found you through Google. Super easy to use. Transcribed 98% correctly even though it was not a great audio file.
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AI transcription and translation in 53+ languages.
