How to create dual-language subtitles
Build bilingual subtitles by combining translated lines with existing subtitle timing and checking the result in one subtitle file.
Read guideWorkflow guides (8)
End-to-end workflows for cleaning, preparing, and delivering subtitle files — covering common publishing, editing, and troubleshooting scenarios.
How to choose
Use these guides for end-to-end subtitle jobs
Workflow guides cover practical jobs that involve more than one format decision, such as preparing captions for YouTube, extracting subtitles from video files, building bilingual subtitles, or cleaning files before delivery.
- Follow a complete subtitle preparation path from source file to final upload.
- Handle privacy-sensitive browser-local workflows without sending files to a server.
- Combine conversion, cleanup, timing, and review steps in the right order.
How to extract subtitles from MKV
Extract embedded text subtitles from MKV files locally, check whether the stream is text-based, and save captions as a separate subtitle file.
Read guideHow to merge two SRT files
Merge two SRT subtitle files into one sorted and renumbered output, then check timing, overlaps, and cue order before delivery.
Read guidePrepare subtitles for YouTube upload
Prepare clean, correctly timed SRT subtitle files for YouTube uploads by checking format, timing, encoding, cleanup, and final preview.
Read guideWhy subtitles do not show in HTML5 video
Diagnose and fix the most common reasons subtitle tracks fail to render in HTML5 video players, from wrong file formats to missing WEBVTT headers.
Read guideClean subtitle formatting before upload
Clean subtitle files before upload by normalizing messy structure, line breaks, and formatting problems that often cause delivery issues.
Read guideBest subtitle format for YouTube
Choose the best subtitle format for YouTube uploads, when to keep SRT, when VTT matters, and how to convert captions before delivery.
Read guideWhen to use ASS instead of SRT
Learn when ASS subtitles are worth using instead of SRT for styling, positioning, editing control, and delivery workflows.
Read guideBrowse the rest of the guide library
Conversion guides
Format-specific tutorials for getting subtitle files ready for the right destination.
Open clusterSubtitle sync fixes
Repair timing drift, malformed timestamps, and other subtitle file problems.
Open clusterFormat comparisons
Choose the right subtitle format for browser playback, uploads, and delivery.
Open cluster