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MCC to VTT converter, without the upload.

Turn MCC captions into VTT. It is converted in your browser, so the file never leaves your device.

Drop MCC files here

or choose from your computer paste with Ctrl V

Ready · several at once0 bytes uploaded, ever

Convert to

How to convert MCC to VTT

  1. Add your MCC captions

    Drop MCC (MacCaption) files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.

  2. VTT is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the VTT, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The MCC to VTT converter is part of this page and runs inside your browser. Your captions are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

MCC to VTT: what to expect

MCC is a hex dump that most players, and people, cannot read. VTT is what web video players and browsers display natively. MCC is at home in closed captions for broadcast and streaming delivery that carry CEA-708 as well as CEA-608; VTT is the usual choice for captions on web pages and in HTML video players.

The text is read as UTF-8 or UTF-16, whichever the file is. An older file in another code page is read using the charset it declares, or as Windows-1252 if it declares none, so accented letters in an unlabelled legacy file can come out wrong. A file that is not text, such as the picture-based subtitles of a DVD, is refused instead of being converted to nonsense. Of the styling, only italic, bold, underline and the position on screen (top, middle or bottom, left, centre or right) travel between formats; fonts, colours, outlines and effects do not. The CEA-608 caption data inside each packet is read, as for SCC. Captions that exist only as CEA-708 service data are not read. Top and middle positions and left or right alignment are written as WebVTT cue settings.

MCC vs VTT

MCC

MCC closed captions

MCC is MacCaption's caption file: one line per video frame, each a caption distribution packet in hexadecimal that can hold both CEA-608 and CEA-708 data. It exists so that captions can follow the video's own frame rate, 24 to 60 fps, and so that one file serves analogue and digital caption decoders.

Opens in MacCaption, CaptionMaker, Premiere Pro, Final Cut Pro and DaVinci Resolve

MCC converter
VTT

WebVTT subtitles

WebVTT is the caption format of HTML5 video. It looks like SRT with a WEBVTT header and a full stop in the timestamps, but also supports positioning, styling with CSS, chapters and metadata. Browsers display it natively.

Opens in Web browsers (the HTML track element), YouTube, Vimeo, VLC and streaming players

VTT converter
MCC compared with VTT
MCCMCC closed captionsVTTWebVTT subtitles
Stands forMacCaption Closed CaptionsWeb Video Text Tracks
TypeSubtitlesSubtitles
CompressionNone (hex text)None
IntroducedThe 2000s, by Computer Prompting and Captioning Company (CPC)2010, by the WHATWG and W3C
Opens inMacCaption, CaptionMaker, Premiere Pro, Final Cut Pro and DaVinci ResolveWeb browsers (the HTML track element), YouTube, Vimeo, VLC and streaming players
Best forClosed captions for broadcast and streaming delivery that carry CEA-708 as well as CEA-608Captions on web pages and in HTML video players
File extension.mcc.vtt, .webvtt

Questions

Are my captions uploaded anywhere?

No. The MCC to VTT conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting MCC to VTT?

No further quality is lost: VTT stores the decoded audio exactly. The result is identical in content.

Can I convert several MCC files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert MCC to VTT on Windows, Mac, iPhone or Android?

The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the MCC file, press Convert and save the VTT. There is nothing to install.

Is there a file size limit?

Yes, but a subtitle file is small. Files up to 50 MB are accepted, far more than any real subtitle file. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.