How to Add Subtitles to a Video (Free, With AI Transcription)
Most people watch videos on mute, and subtitles make your content accessible, understandable and more engaging. Creating them by hand is painfully slow — but AI transcription can generate timed subtitles automatically. This guide shows how to add subtitles to a video for free by transcribing the audio into an .srt subtitle file.
💬 Try the Video Downloader & Transcriber now — freeOpen →Subtitles boost watch time, reach and accessibility. Many viewers scroll with sound off, non-native speakers rely on captions, and platforms favor accessible content. Subtitles also let deaf and hard-of-hearing viewers enjoy your video — a big audience you'd otherwise miss.
How AI subtitles work
AI transcription listens to your video's audio, converts the speech to text, and adds timing so each line appears at the right moment. Exported as an .srt file — a simple, universal subtitle format — it can be loaded into any video editor or uploaded alongside your video on platforms like YouTube.
Clear audio produces accurate subtitles. Background noise, music and overlapping voices reduce accuracy, so the cleaner the sound, the less editing you'll do afterward.
Edit before you publish
- Proofread the transcript for misheard words, especially names and jargon.
- Check timing so lines match the speech.
- Keep lines short enough to read comfortably.
- Add punctuation for readability if needed.
- Then import the .srt into your editor or upload it with the video.
Step-by-step
Common mistakes to avoid
Pro tips
Frequently asked questions
How do I add subtitles for free?
Transcribe the video's audio with AI, export an .srt subtitle file, proofread it, and import it into your editor or upload it with the video.
What is an .srt file?
A simple, universal subtitle format with text and timestamps that works in virtually every video editor and platform.
Are AI subtitles accurate?
Very accurate with clear audio; noise and overlapping voices reduce accuracy, so proofread before publishing.
Do subtitles help my video?
Yes — they boost watch time, reach, and accessibility, and help the many viewers who watch on mute.
Is it free?
Yes, within a generous free allowance for transcription.
AI transcription turns adding subtitles from an hours-long chore into minutes: transcribe, export the .srt, proofread, and attach it to your video. More accessible, more watch time, more reach — free within a generous allowance.