Subtitle Composer

Video subtitle editor that supports basic and advanced editing operations

Not tested on a device yet. What that means

Subtitle Composer in Breadstick

Breadstick runs Debian's own subtitlecomposer package for ARM64, the build a Debian 13 computer with an ARM processor installs, so Subtitle Composer should look and behave as it does on a Linux PC. On Samsung DeX, Floating mode opens it as its own window beside your Android apps, and Desktop mode runs it on a full Linux desktop.

Sound plays through the device's own audio output, and video is decoded in software, so large or high frame rate files can struggle on slower devices. More about audio and video apps in Breadstick.

About Subtitle Composer

From the project's description

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).

From the project's AppStream metadata in Debian's subtitlecomposer package, under CC0-1.0.

Menu categories: Audio and video

Related apps

All Linux audio and video apps

Sources and licenses

Name, summary and description: the project's AppStream metadata in Debian's subtitlecomposer package, under CC0-1.0.
Icon: the project's own, from Debian's AppStream icon cache for the subtitlecomposer package; the project's license is GPL-2.0+.
Versions and sizes: Debian's archive for ARM64, as on packages.debian.org.
Popularity: Debian Popularity Contest counts.