SCC to SRT Converter
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Free Online SCC to SRT Converter
Our SCC to SRT converter decodes Scenarist Closed Captioning files into plain-text SubRip subtitles. SCC files store caption text as hexadecimal byte pairs following the CEA-608 standard, making them unreadable in a text editor and incompatible with most consumer video players. This tool decodes the hex data, interprets the 608 caption commands (pop-on, roll-up, paint-on modes), extracts the visible text, and converts the SMPTE timecodes (HH:MM:SS:FF at 29.97fps) into SRT timestamps (HH:MM:SS,mmm). The result is a standard .srt file that works on any device.
Input Format
SCCSCC (Scenarist Closed Captioning) is the industry-standard format for delivering closed captions to North American broadcast television and major streaming services. Developed by Leitch/Scenarist, 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 the caption text is hex-encoded, SCC files are not human-readable without a decoder.
Output 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.
Features
Why Convert?
Format Differences
Common Use Cases
Broadcast Caption Extraction
Decode SCC files delivered by broadcast networks or captioning vendors into readable SRT for quality checking and content verification.
Streaming Platform Delivery
Convert SCC captions to SRT for delivery to platforms that accept SRT but not SCC, such as Vimeo OTT and some CMS systems.
Post-Production Editing
Load decoded SRT captions into Premiere Pro or DaVinci Resolve for timing adjustments, text corrections, or re-translation.
Media Server Library
Add readable subtitles to your Plex or Jellyfin library by converting SCC files to SRT, which these servers auto-detect.
Caption Quality Review
Decode hex-encoded SCC data to verify caption accuracy, check for encoding errors, or audit compliance with captioning standards.
Legacy Content Migration
Convert old broadcast SCC archives to SRT for modern video workflows, web delivery, or archival standardization.
Related Formats
SCC (Scenarist Closed Captioning)
The input format: hex-encoded CEA-608 caption data with SMPTE timecodes, used for North American broadcast delivery.
VTT (WebVTT)
The web alternative: if your target is HTML5 video or YouTube, convert SCC to VTT instead of SRT.
STL (EBU STL)
The European broadcast equivalent: used in EBU-standard workflows for European television and DVD production.
Frequently Asked Questions
SCC encodes caption text as hexadecimal byte pairs following the CEA-608 standard. For example, the word "Hi" might be encoded as 94ae 2980 in hex. The converter decodes these byte pairs back into readable characters.
SCC supports three CEA-608 caption modes: pop-on (captions appear all at once), roll-up (lines scroll up like credits), and paint-on (characters appear one at a time). The converter handles all three modes and produces standard SRT entries.
SCC is defined at 29.97fps drop-frame timecode. The converter uses the standard 29.97fps frame-to-millisecond conversion. If your content uses a different frame rate, you may need to adjust the timing manually after conversion.
SCC uses HH:MM:SS:FF format where FF is a frame number at 29.97fps. The converter multiplies the frame number by approximately 33.37 milliseconds (1000/29.97) to convert it to SRT millisecond format (HH:MM:SS,mmm).
SCC includes mid-row attribute codes for italic, underline, color, and flash effects. These are CEA-608 specific and have no equivalent in SRT. The converter removes these control codes and outputs plain text.
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