Skip to main content


SUB to SRT Frame Converter


MicroDVD SUB files use frame numbers instead of timecodes, a relic from the DVD era that still appears in subtitle archives. Our converter expertly transforms these frame-based subtitles into time-based SRT format, handling any frame rate with precision.


How the SUB to SRT Frame Converter works


Select your .sub file and specify the video frame rate (usually 23.976, 25, or 29.97 fps). The converter calculates exact timecodes from frame numbers, ensuring perfect synchronization when converted to SRT. Processing handles both the subtitle text and the critical timing conversion accurately. Download your SRT with confidence knowing the sync is preserved.

SUB to SRT conversion solves the frame-rate headache. Classic movie subtitles become usable in modern players, DVD rips get proper timing, and archived subtitles work with streaming video. The frame-to-time conversion is crucial – get it wrong and your subtitles drift out of sync.



Meet the fastest voice-to-text for professionals


WriteVoice turns your voice into clean, punctuated text that works in any app. Create and ship faster without typing. Your first step was SUB to SRT Frame Converter; your next step is instant dictation with WriteVoice.



A blazing-fast voice dictation

Press a hotkey and talk. WriteVoice inserts accurate, formatted text into any app, no context switching


Works in any app

Press one hotkey and speak; your words appear as clean, punctuated text in Slack, Gmail, Docs, Jira, Notion, and VS Code—no context switching, just speed with writevoice

Accurate, multilingual, and smart

97%+ recognition, smart punctuation, and 99+ languages so your ideas land first try, built for teams and pros.

Private by default

Zero retention, audio and text are discarded instantly, with on-device controls so you can dictate sensitive work confidently.



Start with SUB to SRT Frame Converter, then level up to WriteVoice.io