SubShift: Subtitle SRT Editor

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
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• 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.

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🩺 SUBTITLE HEALTH & OVERLAP LINTER
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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.

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📊 READING SPEED & CPS MONITOR
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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.

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🌐 ENCODING & FOREIGN CHARACTER REPAIR
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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.

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💾 MULTI-FORMAT STUDIO EXPORT
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• 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.

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📺 HOW TO USE YOUR EXPORTED FILE
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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.

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🔒 100% OFFLINE & PRIVACY-FIRST
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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!