Add Captions to MP4
Upload your MP4 and get accurate captions burned into the file or exported as SRT, VTT, or plain text - no account required to start. Built for creators, businesses, and anyone who needs reliable subtitles without a monthly fee.
Drop your file here
MP4 · MOV · MP3 · WAV · WebM · MKV and more
5 free minutes · no account needed · no watermark
How to add captions to mp4
- 1
Upload your MP4 file
Drag your MP4 into CentClip - no account or credit card needed for your first 5 minutes. CentClip accepts MP4 files from any source: screen recordings, phone footage, camera exports, or downloaded clips. The upload runs in your browser, so your file is not stored anywhere longer than it takes to process.
- 2
Review and correct your captions
Once CentClip transcribes your MP4, a time-synced editor shows every caption line alongside its timestamp. Scan through and fix any words the recognizer missed - especially proper nouns, brand names, or technical terms. Edits update in real time before you finalize the output.
- 3
Export your captioned MP4 or subtitle files
Choose to burn captions permanently into a new MP4, or download a standalone SRT or VTT file to pair with your original. A plain text transcript is also available if you need the words without timecodes. All three export types are available from the same screen after you finish editing.
Why choose CentClip?
One-off MP4 jobs cost what they actually cost
If you need to caption a single MP4 - a product demo, a recorded interview, or a compliance training video - there is no reason to pay $15 or $30 a month for a subscription you will cancel and resubscribe to. CentClip charges 5 cents per minute, so a 20-minute MP4 costs exactly $1.00. Credits never expire, meaning you can buy a batch for this project and use the remainder next quarter with nothing wasted.
The output is still a standard MP4 - no format juggling
When you burn captions into your file, CentClip returns a standard MP4. No new container to convert, no intermediate format to hand off to a video editor, no compatibility surprises when you upload to YouTube, Vimeo, Slack, or a learning management system. The captioned MP4 works everywhere the original did, with the subtitles locked into the picture so they appear regardless of player settings.
Accurate enough for technical content and multilingual footage
MP4 files come from everywhere - conference talks, customer support recordings, university lectures, multilingual team calls. CentClip's speech recognition covers 50-plus languages and handles domain-specific vocabulary better than older phonetic engines. This is transcription, not translation: the captions come back in the language that was spoken, which is exactly what you need for accessibility, search indexing, or legal records.
FAQ
How accurate are the captions CentClip adds to my MP4?
Accuracy depends on audio quality - clear speech with minimal background noise produces the best results. You can review and correct every caption line in the editor before downloading your finished MP4.
Is there a free trial for MP4 captioning?
Yes - CentClip gives you 5 free minutes with no account and no credit card required. After that, you pay 5 cents per minute with no subscription and no minimum purchase.
What file formats can I upload and download with CentClip?
CentClip accepts MP4 uploads and returns a burned-in MP4, an SRT file, a VTT file, or a plain text transcript - all compatible with YouTube, Vimeo, TikTok, and any platform that supports standard subtitle formats.
Do my CentClip credits expire if I don't use them right away?
No. CentClip credits never expire - buy them for this project and use the remainder months later, with no monthly reset or subscription deadline to worry about.