Linux · Audio, Video & Music
Subtitle Composer
Video subtitle editor that supports basic and advanced editing operations
by KDE
Official site: flathub.org
About Subtitle Composer
Subtitle Composer is an open source text-based subtitle editor that supports basic and advanced editing operations.
Features
Open/Save Text Subtitle Formats - SubRip/SRT, MicroDVD, SSA/ASS, MPlayer, TMPlayer and YouTube captions
Open/OCR Graphics Subtitle Formats - VobSub (.idx/.sub/.rar), BluRay/PGS (*.sup), formats supported by ffmpeg (DVD/Vob, DVB, XSUB, HDMV-PGS)
Demux Graphics/Text Subtitle Stream from video file - SRT, SSA/ASS, MOV text, MicroDVD, DVD/Vob, DVB, XSUB, HDMV-PGS
Speech recognition from audio/video file using PocketSphinx
Smart language/text encoding** detection
Live preview of subtitles in integrated video player w/ audio stream selection
Preview/editing of subtitles on graphical audio waveform w/ audio stream selection
Sync by dragging several anchors/graftpoints and stretching timeline
Time shifting and scaling, lines duration re-calculation, framerate conversion, etc.
Joining and splitting of subtitle files
Side by side subtitle translations
Text styles (italic, bold, underline, stroke, color)
Spell checking
Detection of timing errors in subtitles
Scripting (JavaScript, Python, Ruby and other languages supported by Kross).
How to install Subtitle Composer
- Click Download — the developer's official website opens in a new tab.
- Download the latest version there and run it. Choose Custom/Advanced where offered, and skip any bundled extras.
- Prefer the command line? With Flatpak you can install and update it with: flatpak install flathub org.kde.subtitlecomposer
- Open Subtitle Composer once it finishes installing.
Frequently asked questions
Is Subtitle Composer free to download?
Yes. The Download button sends you to flathub.org, the developer's official site, where Subtitle Composer is available to download. Flatnic doesn't host or modify any files.
How do I install Subtitle Composer from the command line?
With Flatpak, run: flatpak install flathub org.kde.subtitlecomposer. This installs it from the official source and keeps it updated.
Is Subtitle Composer safe?
Subtitle Composer downloads directly from the developer. As always, scan the installer with your antivirus and choose Custom setup to skip any bundled extras.
