Add Captions to MP3
CentClip transcribes your MP3's audio and outputs an editable SRT, VTT, or plain transcript you can use in any video editor, podcast host, or content workflow. Built for podcasters, voice memo recorders, and audio producers who need accurate captions without paying for a monthly subscription they won't use every week.
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How to add captions to mp3
- 1
Upload your MP3 file
Drop your MP3 directly onto CentClip's upload area - no account or sign-up required to begin. CentClip accepts MP3 files alongside standard video formats, so there's no need to convert your audio before uploading. Your first 5 minutes are processed free, which covers a typical short interview segment, podcast intro, or voice memo.
- 2
Review and edit the transcript
CentClip transcribes your audio and breaks it into timed caption segments displayed in a simple editor. Correct any words the transcriber missed - brand names, proper nouns, and technical terms are the most common edits - then adjust timing if any line feels too long or too short. The editor supports 50+ languages, so your MP3 can be in English, Spanish, French, Portuguese, Hindi, or dozens of other languages.
- 3
Download your captions or transcript
Export an SRT or VTT subtitle file to attach to a video in your editor, podcast host, or media player that supports caption tracks. A plain text transcript is also available at no extra cost - useful for blog posts, show notes, or searchable documentation. If you pair the audio with a video file in your editor, the SRT or VTT will sync cleanly for burned-in or soft captions on export.
Why choose CentClip?
Audio files have no native caption track - listeners who need text have nothing to fall back on
Podcast episodes, voice memos, and interview recordings exported as MP3 don't carry a subtitle track the way a video container can. Listeners who are deaf or hard of hearing, non-native speakers, or simply in a noisy environment get no text to follow. Adding an SRT or VTT file fixes that gap for any podcast host or media player that supports external caption tracks. CentClip processes MP3 directly without requiring a video file, so the transcription step fits into an audio-only production workflow.
Generic transcription gets the specific words wrong - the ones that matter most
Audio recordings often contain the exact terminology, names, and jargon that generic speech recognition stumbles on: client names in a sales call, product terms in a brand interview, or medical vocabulary in a dictation recording. CentClip's transcription engine covers 50+ languages and handles a wide range of accents and speaking styles, and every segment is editable before you export. This matters most when the resulting transcript will be published - podcast show notes, legal documentation, or searchable content archives where errors are visible and permanent. Fixing one or two words in a review step takes seconds; tracking down mistakes after distribution does not.
A monthly subscription is poor value for audio you only caption occasionally
Most transcription platforms charge a flat monthly fee regardless of how many MP3 files you actually process - bad value for a project-based workflow or irregular production schedule. CentClip charges 5 cents per minute with no recurring fee: a 30-minute podcast episode costs $1.50, and a month where you caption nothing costs nothing. Credits never expire, so you can buy a batch before a recording sprint and use the remainder weeks or months later with no pressure. There is no plan tier to upgrade, no file length cap, and no renewal date to track.
FAQ
How accurate is CentClip's transcription for MP3 audio?
CentClip uses a speech recognition model trained across 50+ languages and performs well on clear, single-speaker recordings. Background noise or heavy crosstalk may need a few manual corrections in the built-in editor before you export.
Is there a free trial, and what does it cost to caption an MP3?
Your first 5 minutes are free with no account or credit card required. After that, CentClip charges 5 cents per minute with no subscription - a 30-minute podcast episode costs $1.50 to caption.
What caption formats does CentClip output for MP3 files?
CentClip exports SRT and VTT subtitle files compatible with most video editors, podcast hosts, and media players that support caption tracks. A plain text transcript is also included at no extra charge.
Do CentClip credits expire if I don't caption recordings right away?
No. CentClip credits never expire - buy them when you have a batch of recordings to process and use the remainder any time, with no monthly reset or subscription to cancel.