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SCC to MCC converter, without the upload.

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

Drop SCC files here

or choose from your computer paste with Ctrl V

Ready · several at once0 bytes uploaded, ever

Convert to

How to convert SCC to MCC

  1. Add your SCC captions

    Drop SCC (CEA-608, EIA-608, line 21) 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. MCC is already chosen

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

  3. Download

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

Why ToAny

  • Private by construction

    The SCC to MCC 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.

SCC to MCC: what to expect

SCC is a hex dump that people cannot read or edit by hand, and web players do not read it. MCC is accepted by broadcast delivery specifications and caption tools that need frame-accurate caption packets. SCC is at home in closed captions for US and Canadian broadcast, DVD and some streaming deliveries; MCC is the usual choice for closed captions for broadcast and streaming delivery that carry CEA-708 as well as CEA-608.

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. CEA-608 pop-on, roll-up and paint-on captions on the first caption channel (or the second, if the first is empty) are read; colours are dropped, and a roll-up row becomes one cue that ends when it scrolls off. Times follow the 29.97 fps frame clock, drop-frame or not. The captions are the same CEA-608 pop-on data as an SCC file, wrapped in one caption packet per frame that carries data. Idle frames get no line, which keeps the file small, and there is no CEA-708 data.

SCC vs MCC

SCC

SCC closed captions

SCC stores the CEA-608 caption data of line 21 video as lines of hexadecimal byte pairs, each line starting at a timecode, one pair per video frame. It is limited to 32 characters on up to four rows, a Latin character set and a frame-based clock (usually 29.97 fps drop-frame), but it is what American broadcasters and many video editors expect.

Opens in Broadcast and DVD authoring tools, Premiere Pro, Final Cut Pro, DaVinci Resolve and VLC

SCC converter
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
SCC compared with MCC
SCCSCC closed captionsMCCMCC closed captions
Stands forScenarist Closed CaptionsMacCaption Closed Captions
TypeSubtitlesSubtitles
CompressionNone (hex text)None (hex text)
IntroducedThe 1990s, by Sonic Solutions (Scenarist)The 2000s, by Computer Prompting and Captioning Company (CPC)
Opens inBroadcast and DVD authoring tools, Premiere Pro, Final Cut Pro, DaVinci Resolve and VLCMacCaption, CaptionMaker, Premiere Pro, Final Cut Pro and DaVinci Resolve
Best forClosed captions for US and Canadian broadcast, DVD and some streaming deliveriesClosed captions for broadcast and streaming delivery that carry CEA-708 as well as CEA-608
File extension.scc.mcc

Questions

Are my captions uploaded anywhere?

No. The SCC to MCC 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 SCC to MCC?

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

Can I convert several SCC 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 SCC to MCC 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 SCC file, press Convert and save the MCC. 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.