High-accuracy Whisper transcription
Captionly runs OpenAI Whisper locally with full word-level timing. Strong with names, jargon and noisy podcast rooms.
"Hello, world!"
"Amazing video!"
"Subscribe now!"
"Watch this..."
Built for podcasters · Accurate long-form transcripts
Free podcast subtitle generator
Drop a podcast episode or clip and Captionly transcribes the whole thing with AI, lets you edit speakers and quotes inline, and exports SRT, VTT or a burned-in MP4 ready for YouTube. Long-form ready, no upload, no quota.
Podcast video clips live and die on captions — most people scroll past audio-only content on YouTube, Reels and Shorts. Captionly is a free podcast subtitle generator that handles long-form transcripts accurately, lets you fix names and acronyms with a click, and exports the formats every editor and platform actually takes. Your audio never leaves your machine, so you can transcribe sensitive interviews without worrying about who's storing what.
Free AI subtitle generator — drop a video to get started
Drop your video here
or click to browse your files
Supports MP4, MOV, AVI, WebM (max 500MB)
100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved100% freeno signupno watermark50+ languagesSRT · VTT · TXTprivate by defaultAI-powerededit on the flyTikTok-readypodcast-readycreator-loved
✦ Built for long-form podcast workflows
Built for long-form podcast workflows
Accuracy, speed and control — the three things that matter when you transcribe an hour of audio.
Inline transcript editor
Click any word to seek, type to fix it, undo/redo intact. Glossary mappings auto-replace recurring transcription errors across the whole episode.
Export SRT, VTT or ASS
Drop the SRT into YouTube Studio for an episode upload, or use ASS to burn elaborately styled captions into a Shorts clip.
No file size guilt
Captionly processes locally, so a 60-minute episode is fine — no upload bar, no surprise plan limit, no "your file is too long".
Privacy-first by design
Your raw audio stays on your machine. Captionly does not retain, share, or train on your interviews.
Burn captions for clips
Cut a 30-second clip, pick a podcast-style caption preset, export a captioned MP4 ready for the audiogram pipeline.
✦ ShowcaseReal videos.
Real videos.
Real captions.
See how creators of every kind are using Captionly. Drag to browse, click to play.
EN0:42
Neon Pop
thischangedmylife
EN1:18
Box Highlight
andthat'swhenIquit
EN0:21
Gradient Wave
onemorerep!
EN2:04
Karaoke
Tokyoatgoldenhour
EN0:56
Bounce
bestadviceever
ES0:33
Outline
novasacreer
EN0:28
Shadow Pop
let'sgo!victory
EN1:45
Underline
watchthistrick
EN0:52
Glitch
thisisinsane
EN0:38
Minimal
feelthebeat
EN0:19
Rainbow
hitthatmove
EN0:47
Pill
waitforit
✦ FAQ
Captioning podcasts — what podcasters ask
Quick answers for editors who turn long-form audio into captioned video.
Related tools
- TikTok subtitle generatorAdd viral TikTok-style subtitles to any video for free. AI transcription with Whisper, runs in your browser, no watermark, no signup. Export burned-in MP4 or SRT.
- YouTube Shorts subtitle generatorAdd AI captions to YouTube Shorts in seconds. Free, no watermark, no signup, 12 vertical-ready styles. Burn into MP4 or export SRT for YouTube auto-captions.
- Burn subtitles into videoBurn subtitles directly into an MP4 in your browser. No upload, no FFmpeg setup, no watermark. WebCodecs-powered, free forever, 12 caption styles. Done in seconds.
- MP4 to SRT converterConvert any MP4 video to an SRT subtitle file for free. AI transcription with Whisper runs in your browser — no upload, no signup, no watermark. Drop a file, get an SRT.
- Captionly vs SubmagicHonest Captionly vs Submagic comparison. Captionly is free forever, runs in your browser, has no watermark and no signup. Submagic is paid and cloud-based. Compare features, pricing and privacy.
- Captionly vs KapwingCaptionly vs Kapwing compared. Captionly is 100% free with no watermark and runs in your browser. Kapwing watermarks free exports and uploads to the cloud. Features, pricing, privacy.
Free · Long-form ready · Private
Ship the episode with captions
Drop the episode, edit the transcript, export SRT or a captioned clip. The fastest way to take a podcast from audio to a captioned video — no upload, no quota.