SUB to CSV Converter

Converting a SUB (.sub) file to CSV turns MicroDVD's frame-numbered subtitles into a spreadsheet with real millisecond timestamps: ready to open in Excel or Google Sheets for review, bulk editing, or handing off to a translator who works in spreadsheets rather than a caption editor.

What is MicroDVD (SUB)?

MicroDVD (.sub) is a frame-based subtitle format that times each line by frame number rather than by clock time. It is common with older desktop and DVD players.

What is CSV Subtitle Export?

CSV (.csv) is a spreadsheet-ready export: not a subtitle format any media player reads, but the format for reviewing, editing, or bulk-processing subtitle text in Excel, Google Sheets, or any spreadsheet tool. Each cue becomes one row with its index, start/end timecodes, millisecond timing, and text in separate columns, so a translator, editor, or QA reviewer can work through an entire subtitle file as a table instead of a line-based text format.

About SUB to CSV Conversion

• One row per cue: each MicroDVD {startFrame}{endFrame}text line becomes a CSV row with index, start/end, startMs/endMs, and text columns.
• Frame numbers converted using a frame rate: SUB stores timing as frame counts, not time. If the file's first line carries an FPS marker ({1}{1}25), that rate is detected and used automatically; otherwise the converter assumes 23.976 fps by default, pick a different source frame rate before converting if your file uses another rate.
• Timecodes are quoted: the normalized timecode format (00:00:01,000) contains a comma, so the start/end columns are quoted per the CSV standard, otherwise spreadsheet software would misread the comma as a column break.
• Pipe line breaks collapse to a space: MicroDVD's | line separator (e.g. Hello|world) becomes a single space in the CSV, since a spreadsheet cell is one line of plain text with no line-break convention.

Timecodes are converted to CSV timing precision with no loss of sync.