How to fix VLC subtitle delay
Fix VLC subtitles that are out of sync by measuring the offset, previewing the delay, and shifting the subtitle file permanently.
Read guideSubtitle sync fixes (25)
Practical fixes for the most common subtitle problems — timing drift, malformed timestamps, missing headers, and broken playback.
How to choose
Use these guides when subtitle timing or structure is broken
Sync problems are easier to fix when you first identify the pattern: a global delay, a changed scene, malformed timestamps, out-of-order cues, or formatting that a player rejects. These guides help you choose the smallest repair before editing the whole file by hand.
- Diagnose whether captions are early, late, drifting, or broken only in one section.
- Clean malformed SRT and WebVTT structures before converting or uploading.
- Use global and partial time shifting only when the timing pattern matches the fix.
Why converted subtitle file is empty
Diagnose an empty subtitle file after conversion by checking source format, missing dialogue rows, blank cues, timestamps, and parser failures.
Read guideWhy your SRT file is not working
Diagnose an SRT file that is not working by checking timestamps, cue order, encoding, file naming, and player support before upload or playback.
Read guideWhy subtitles are missing after conversion
Diagnose missing subtitles after conversion by comparing cue counts, validating timing, checking ASS dialogue rows, and repairing skipped captions.
Read guideWhy subtitles drift out of sync
Diagnose subtitle drift when captions start close but get progressively out of sync because of frame rate mismatch, video cuts, or duration differences.
Read guideHow to clean an SRT file
Clean messy SRT subtitles by normalizing cue numbers, timestamp formatting, spacing, and leftover inline tags before upload or handoff.
Read guideHow to fix overlapping subtitles
Fix overlapping subtitle cues by finding timing conflicts, checking cue order, trimming or shifting captions, and validating the file before delivery.
Read guideHow to fix subtitle timing after cutting a video
Fix subtitle timing after trimming or cutting a video by shifting the whole file or only the affected section of cues.
Read guideHow to fix subtitles showing boxes
Fix subtitles that show boxes, question marks, or broken characters by identifying the source encoding and exporting clean UTF-8 text.
Read guideHow to validate SRT files
Validate SRT subtitle files before upload by checking cue structure, timestamp separators, cue order, and parseable subtitle blocks.
Read guideHow to validate WebVTT files
Validate WebVTT caption files by checking the WEBVTT header, dot-based timestamps, cue structure, and browser playback compatibility.
Read guideWhy your SRT file will not upload
Diagnose why an SRT subtitle file fails to upload by checking timestamp format, cue numbering, blank lines, encoding, and file structure.
Read guideWhy subtitles are out of sync after export
Diagnose subtitles that become out of sync after exporting a video by checking trims, scene cuts, drift, frame-rate changes, and conversion issues.
Read guideWhy VTT captions are not loading
Fix WebVTT captions that do not load in HTML5 video by checking the file format, track element, MIME type, CORS, and player setup.
Read guideFix subtitle sync after a scene cut
Repair subtitle sync after a scene cut by shifting only the affected SRT, VTT, ASS, or SSA time range while synced sections stay unchanged.
Read guideHow to fix garbled subtitles
Fix subtitle files that show weird characters, mojibake, or broken accents by reopening the file with the correct text encoding.
Read guideHow to shift only part of a subtitle file
Shift one selected time range inside an SRT, VTT, ASS, or SSA subtitle file while keeping the rest of the captions unchanged.
Read guideHow to fix out-of-order subtitle cues
Repair out-of-order subtitle cues by sorting timestamps, checking overlaps, validating timing, and cleaning SRT, VTT, or ASS files before playback.
Read guideHow to fix invalid WebVTT timestamps
Fix WebVTT files with malformed timestamp formatting by converting or normalizing subtitle timing into browser-friendly VTT output.
Read guideHow to fix malformed SRT timestamps
Repair malformed SRT timestamp lines, comma formatting, arrow spacing, cue blocks, and structure issues before upload or conversion.
Read guideHow to fix subtitle delay
Fix subtitle delay when captions appear ahead of audio or behind speech. Measure the offset and shift SRT, VTT, or ASS timing online.
Read guideFix subtitles that are too fast or slow
Repair subtitles that appear too early or too late by checking offset, drift, and whether the whole file or only one section needs a timing shift.
Read guideHow to remove subtitle line numbers
Remove bad SRT line numbers, rebuild cue numbering, or convert subtitles for workflows that do not need sequence numbers.
Read guideCommon subtitle format errors and fixes
Diagnose common subtitle format errors by checking file type, timestamps, encoding, cue order, styling, upload rules, and player support.
Read guideHow to fix out-of-sync subtitles
Fix subtitles that are ahead of audio, behind speech, or out of sync by checking constant offset, drift, scene cuts, and the right repair tool.
Read guideBrowse the rest of the guide library
Conversion guides
Format-specific tutorials for getting subtitle files ready for the right destination.
Open clusterFormat comparisons
Choose the right subtitle format for browser playback, uploads, and delivery.
Open clusterWorkflow guides
Practical step-by-step advice for common subtitle publishing and editing workflows.
Open cluster