SubShift: Subtitle SRT Editor
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About this app
Fix out-of-sync subtitles, edit dialogue timestamps, and repair broken captions on your Android device. SubShift is a fast, studio-grade subtitle editor and SRT synchronizer designed for movie lovers, video creators, translators, and anime fans.
Whether your subtitles appear 2 seconds too early, lag behind dialogue, contain garbled foreign text, or drift out of sync over time, SubShift fixes your timing with millisecond precision.
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⚡ CORE TIMING & SYNC TOOLS
━━━━━━━━━━━━━━━━━━━━━
• Millisecond Timestamp Shifter: Shift all cues forward or backward (+/- seconds or milliseconds) to instantly eliminate audio-to-video delay.
• Framerate Drift & Time Stretch: Fix progressive desynchronization caused by video framerate conversion (e.g., 23.976 FPS NTSC vs. 25 FPS PAL, 24 FPS to 29.97 FPS) using one-tap mathematical presets or custom multipliers.
• Split & Merge Cues: Intelligently split long dialogue lines into two equal, properly timed blocks, or merge consecutive cues into a single subtitle.
• Monospace Precision Display: View start times, end times, and exact durations in tabular monospace timecodes (HH:MM:SS,mmm) without visual jitter.
━━━━━━━━━━━━━━━━━━━━━
🩺 SUBTITLE HEALTH & OVERLAP LINTER
━━━━━━━━━━━━━━━━━━━━━
Overlapping timestamps cause media players like VLC and Smart TVs to flicker, freeze, or skip lines.
• Collision Detection: Automatically scans your subtitle file for overlapping timecodes, negative durations, and zero-length sub-flashes.
• 1-Tap Auto-Fix: Resolves all timing collisions in one tap by clamping cue endings with a clean 50ms transition gap.
━━━━━━━━━━━━━━━━━━━━━
📊 READING SPEED & CPS MONITOR
━━━━━━━━━━━━━━━━━━━━━
SubShift includes a Netflix- and BBC-standard Characters Per Second (CPS) monitor on every cue:
• Normal (< 18 CPS): Optimal reading pace for viewers.
• Fast (18–24 CPS): Elevated text density warning.
• Too Fast (≥ 25 CPS): Immediate alert that viewers will struggle to read the text before the line disappears.
━━━━━━━━━━━━━━━━━━━━━
🌐 ENCODING & FOREIGN CHARACTER REPAIR
━━━━━━━━━━━━━━━━━━━━━
Fix broken text, unreadable question marks, and garbled symbols:
• Full Unicode UTF-8 auto-detection.
• Arabic (Windows-1256).
• Western European (ISO-8859-1).
• ANSI Latin (Windows-1252).
• Unicode Little/Big Endian (UTF-16LE / UTF-16BE).
• Native Right-to-Left (RTL) support for Arabic, Hebrew, and Persian.
━━━━━━━━━━━━━━━━━━━━━
💾 MULTI-FORMAT STUDIO EXPORT
━━━━━━━━━━━━━━━━━━━━━
• SubRip (.SRT): The universal standard for VLC, MX Player, Nova, and Smart TVs.
• WebVTT (.VTT): Web standard with headers and millisecond dots, ready for YouTube, Vimeo, and web players.
• Clean Transcript (.TXT): Export dialogue text stripped of cue numbers and timecodes for transcripts, blog posts, and study notes.
━━━━━━━━━━━━━━━━━━━━━
📺 HOW TO USE YOUR EXPORTED FILE
━━━━━━━━━━━━━━━━━━━━━
1. On VLC / MX Player: Open your video, tap the Subtitle icon, select your exported .srt file from your Downloads folder, and enjoy synced playback.
2. On Smart TVs & PCs: Place the video and the exported .srt file in the same folder with the exact same name (e.g., Movie.mp4 & Movie.srt).
3. On Social Video Editors: Import into CapCut, Premiere, or YouTube Studio to generate synced captions and closed captions.
━━━━━━━━━━━━━━━━━━━━━
🔒 100% OFFLINE & PRIVACY-FIRST
━━━━━━━━━━━━━━━━━━━━━
SubShift runs entirely on your local device. Your subtitle files, transcripts, and video scripts are never uploaded to any remote server or third-party cloud.
Download SubShift today and enjoy your movies and videos with perfectly synchronized subtitles!
Whether your subtitles appear 2 seconds too early, lag behind dialogue, contain garbled foreign text, or drift out of sync over time, SubShift fixes your timing with millisecond precision.
━━━━━━━━━━━━━━━━━━━━━
⚡ CORE TIMING & SYNC TOOLS
━━━━━━━━━━━━━━━━━━━━━
• Millisecond Timestamp Shifter: Shift all cues forward or backward (+/- seconds or milliseconds) to instantly eliminate audio-to-video delay.
• Framerate Drift & Time Stretch: Fix progressive desynchronization caused by video framerate conversion (e.g., 23.976 FPS NTSC vs. 25 FPS PAL, 24 FPS to 29.97 FPS) using one-tap mathematical presets or custom multipliers.
• Split & Merge Cues: Intelligently split long dialogue lines into two equal, properly timed blocks, or merge consecutive cues into a single subtitle.
• Monospace Precision Display: View start times, end times, and exact durations in tabular monospace timecodes (HH:MM:SS,mmm) without visual jitter.
━━━━━━━━━━━━━━━━━━━━━
🩺 SUBTITLE HEALTH & OVERLAP LINTER
━━━━━━━━━━━━━━━━━━━━━
Overlapping timestamps cause media players like VLC and Smart TVs to flicker, freeze, or skip lines.
• Collision Detection: Automatically scans your subtitle file for overlapping timecodes, negative durations, and zero-length sub-flashes.
• 1-Tap Auto-Fix: Resolves all timing collisions in one tap by clamping cue endings with a clean 50ms transition gap.
━━━━━━━━━━━━━━━━━━━━━
📊 READING SPEED & CPS MONITOR
━━━━━━━━━━━━━━━━━━━━━
SubShift includes a Netflix- and BBC-standard Characters Per Second (CPS) monitor on every cue:
• Normal (< 18 CPS): Optimal reading pace for viewers.
• Fast (18–24 CPS): Elevated text density warning.
• Too Fast (≥ 25 CPS): Immediate alert that viewers will struggle to read the text before the line disappears.
━━━━━━━━━━━━━━━━━━━━━
🌐 ENCODING & FOREIGN CHARACTER REPAIR
━━━━━━━━━━━━━━━━━━━━━
Fix broken text, unreadable question marks, and garbled symbols:
• Full Unicode UTF-8 auto-detection.
• Arabic (Windows-1256).
• Western European (ISO-8859-1).
• ANSI Latin (Windows-1252).
• Unicode Little/Big Endian (UTF-16LE / UTF-16BE).
• Native Right-to-Left (RTL) support for Arabic, Hebrew, and Persian.
━━━━━━━━━━━━━━━━━━━━━
💾 MULTI-FORMAT STUDIO EXPORT
━━━━━━━━━━━━━━━━━━━━━
• SubRip (.SRT): The universal standard for VLC, MX Player, Nova, and Smart TVs.
• WebVTT (.VTT): Web standard with headers and millisecond dots, ready for YouTube, Vimeo, and web players.
• Clean Transcript (.TXT): Export dialogue text stripped of cue numbers and timecodes for transcripts, blog posts, and study notes.
━━━━━━━━━━━━━━━━━━━━━
📺 HOW TO USE YOUR EXPORTED FILE
━━━━━━━━━━━━━━━━━━━━━
1. On VLC / MX Player: Open your video, tap the Subtitle icon, select your exported .srt file from your Downloads folder, and enjoy synced playback.
2. On Smart TVs & PCs: Place the video and the exported .srt file in the same folder with the exact same name (e.g., Movie.mp4 & Movie.srt).
3. On Social Video Editors: Import into CapCut, Premiere, or YouTube Studio to generate synced captions and closed captions.
━━━━━━━━━━━━━━━━━━━━━
🔒 100% OFFLINE & PRIVACY-FIRST
━━━━━━━━━━━━━━━━━━━━━
SubShift runs entirely on your local device. Your subtitle files, transcripts, and video scripts are never uploaded to any remote server or third-party cloud.
Download SubShift today and enjoy your movies and videos with perfectly synchronized subtitles!
Sync SRT subtitles, fix audio delay, repair overlaps, and export VTT or TXT.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
What’s new
Welcome to the initial launch of SubShift!
• Millisecond Sync: Shift timestamps forward or backward to fix audio-video delay.
• Subtitle Health Linter: Detect and auto-resolve overlapping cues in 1 tap.
• Framerate Drift Fixer: Correct progressive desync with time-stretch presets.
• Studio Export: Save clean, formatted files in .SRT, WebVTT (.vtt), and .TXT.
• Character Encoding: Full support for UTF-8, Arabic (Windows-1256), and Latin.
• Millisecond Sync: Shift timestamps forward or backward to fix audio-video delay.
• Subtitle Health Linter: Detect and auto-resolve overlapping cues in 1 tap.
• Framerate Drift Fixer: Correct progressive desync with time-stretch presets.
• Studio Export: Save clean, formatted files in .SRT, WebVTT (.vtt), and .TXT.
• Character Encoding: Full support for UTF-8, Arabic (Windows-1256), and Latin.
