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Subtitle Composer 0.8.2

Video subtitle editor that supports basic and advanced editing operations

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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).

License: GPL-2.0+
Release info New Release on Aug 17, 2025
Release notes • Fixed issues and crashes with newer Qt6 versions

• Fixed Waveform and VideoPlayer paint issues

• Fixed PGS subtitle mime type

• Improved Wayland compatibility

• Improved GoogleCloudEngine translations

• Added configurable whitespace detection to VobSub import

• Replaced deprecated FFmpeg channel code

• Require FFmpeg >= 5.1.5
Listing dataFlathub

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