SRT to SCC Converter
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Free Online SRT to SCC Converter
Our SRT to SCC converter encodes plain-text SubRip subtitles into Scenarist Closed Captioning format, the industry standard for delivering closed captions to North American broadcasters and streaming services like Netflix, Amazon Prime, and Hulu. The converter transforms readable SRT text into hex-encoded CEA-608 byte pairs, converts SRT timestamps (HH:MM:SS,mmm) to SMPTE timecodes (HH:MM:SS:FF at 29.97fps), inserts pop-on caption control codes, and adds the required Scenarist_SCC V1.0 header. The resulting .scc file is ready for professional caption delivery.
Input Format
SRTSRT (SubRip) is the most universally supported subtitle format. Each entry has a sequential index number, a timestamp line in HH:MM:SS,mmm --> HH:MM:SS,mmm format (comma before milliseconds, arrow separating start and end), and subtitle text. SRT files are plain text and recognized by virtually every media player, smart TV, video editor, and streaming platform.
Output Format
SCCSCC (Scenarist Closed Captioning) is the industry-standard format for delivering closed captions to North American broadcast television and major streaming services. SCC files encode CEA-608 (Line 21) caption data as hexadecimal byte pairs, paired with SMPTE timecodes in HH:MM:SS:FF format (hours:minutes:seconds:frames at 29.97 fps). The file starts with a header line (Scenarist_SCC V1.0) followed by timecode-tab-data triplets. Because caption text is hex-encoded, SCC files are not human-readable without a decoder.
Features
Why Convert?
Format Differences
Common Use Cases
Broadcast Caption Delivery
Produce SCC files from SRT subtitles for delivery to television networks, cable operators, and broadcast playout systems that require CEA-608 captioning.
Streaming Platform Compliance
Generate SCC caption files to meet Netflix, Amazon Prime, or Hulu delivery specifications that list SCC as an accepted caption format.
FCC Caption Compliance
Ensure television programming meets FCC closed captioning requirements by delivering CEA-608 compliant SCC files for broadcast.
Broadcast Automation
Feed subtitle content into broadcast automation and playout systems that read SCC format but cannot import plain-text SRT files.
Caption Archival
Store subtitle content in the broadcast-standard SCC format for long-term archival in professional media asset management systems.
Captioning Pipeline
Integrate SCC encoding into subtitle production pipelines where SRT is used for editing and SCC is required for final delivery.
Related Formats
SRT (SubRip)
The input format: universal plain-text subtitles readable by all media players and editors.
VTT (WebVTT)
The web alternative: if you also need web-ready captions, convert SRT to VTT in parallel with SCC.
STL (EBU STL)
The European broadcast alternative: if your delivery target is European broadcasters, convert SRT to STL instead.
Frequently Asked Questions
SCC (Scenarist Closed Captions) is the standard format for Line 21 closed captioning used by North American broadcast television. It encodes caption data as hexadecimal byte pairs that map to CEA-608 caption commands. NBC, CBS, ABC, Fox, and US cable networks require SCC for broadcast caption delivery.
CEA-608 (formerly EIA-608) is the North American standard for Line 21 television closed captions. SCC files encode CEA-608 commands including pop-on, paint-on, and roll-up caption modes, channel selection (CC1-CC4), and character sets for English, Spanish, and French.
SCC supports three CEA-608 caption modes: Pop-On (captions appear as complete blocks), Paint-On (characters appear one by one), and Roll-Up (captions scroll up line by line). The converter defaults to Pop-On mode, which is closest to how SRT cues display.
SRT stores subtitle text as readable plain text with human-readable timestamps. SCC encodes caption data as hexadecimal byte pairs (like 9152 91ae 9120 9120) that represent CEA-608 control codes and characters. The converter translates between these fundamentally different encoding systems.
SRT timestamps (HH:MM:SS,mmm) are converted to SCC timecodes in HH:MM:SS;FF format, where FF is the frame number. For NTSC 29.97fps drop-frame, the converter generates the correct SMPTE timecode with semicolon separators.
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