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SRT to SCC converter

Turn SRT or WebVTT subtitles into an SCC file of CEA-608 pop-on closed captions, the format US broadcasters, Premiere Pro and DVD authoring expect. Lines are wrapped to 32 characters and centered, each caption is sent ahead of time so it appears on its frame, and the timecode can start at 01:00:00;00.

  • Free, no limits
  • No upload
  • Drop-frame or non-drop

FAQ

Frequently asked questions

Something else, or a file that will not convert? Write to conform@niamori.ai.

What is an SCC file?

SCC (Scenarist Closed Captions) stores CEA-608 caption data, the Line 21 closed captions of North American TV, as hexadecimal codes with 29.97 fps timecodes. Broadcasters, Premiere Pro, Final Cut Pro, DaVinci Resolve and DVD authoring tools read it.

What limits does CEA-608 have?

Captions are at most 32 characters wide and, in pop-on style, up to 4 lines. The character set covers English, Spanish, French, Portuguese and German accented letters plus a few symbols such as ♪; other characters, such as Chinese or emoji, cannot be sent and turn into “?”, which the converter lists.

Drop-frame or non-drop-frame?

Most broadcasters want 29.97 drop-frame timecode (written with semicolons, 01:00:00;00), which stays in step with the clock. Turn it off for non-drop (01:00:00:00) if your spec asks for it; the captions land on the same frames either way.

Why does my SCC start at 01:00:00;00?

Broadcast masters usually start at 01:00:00;00 (or 00:59:50;00 with bars and slate), and an SCC file uses the same timecode as the video. Set Video starts at timecode to your master’s start; leave it at 00:00:00;00 for web videos.

How do I import an SCC file into Premiere Pro?

Choose File › Import, select the .scc file, then drag it into the sequence; Premiere creates a CEA-608 caption track. If the captions are offset, check that the sequence starts at the same timecode as the SCC.