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Subtitle Composer

Flathub·Design & Creative

Subtitle Composer is a desktop application for creating, editing, and synchronizing subtitles for video content. It supports a wide range of text and graphics subtitle formats, including SRT, ASS, VobSub, and PGS, with features like live video preview, audio waveform editing, speech recognition, spell checking, and advanced timing adjustments. It is designed for video editors, translators, and content creators working with subtitles across Linux environments.

Open Source
Linux
SCSubtitle Composer logo
Visit Flathub↗

Overview

10 features

Subtitle Composer is a Design & Creative product. It focuses on editing and synchronizing subtitles for video files with precision and advanced tools. Subtitle Composer is an open-source project aimed at video editors and subtitle translators. The project is open source (Open Source). It runs on Linux.

Subtitle Composer Team builds and maintains Subtitle Composer. Among its 10 catalogued features are Text Subtitle Formats, Graphics Subtitle Formats, and Demux Subtitle Streams.

  • ✓Text Subtitle Formats
  • ✓Graphics Subtitle Formats
  • ✓Demux Subtitle Streams
  • ✓Speech Recognition
  • ✓Live Video Preview
  • ✓Audio Waveform Editing
  • ✓Sync by Dragging
  • ✓Time Shifting
  • ✓Spell Checking
  • ✓Timing Error Detection

Tags

subtitle-editorvideo-subtitlessrt-asswaveform-syncspeech-to-subtitle

Built with & integrations

Runs on
Linux

Trust & compliance

LicenseOpen Source
Verified signals
✓ HTTPS✓ Open Source✓ Free tier

Recent events

Latest indexed changes and source events

  1. IndexedJul 21, 8:31 PM

    subtitlecomposer verified by the PulseGate indexer

    Source: PulseGate indexerOpen ↗

Frequently asked questions about Subtitle Composer

What is Subtitle Composer?
Subtitle Composer focuses on editing and synchronizing subtitles for video files with precision and advanced tools. It is catalogued under Design & Creative on PulseGate.
Who should use Subtitle Composer?
Subtitle Composer is an open-source project built for video editors and subtitle translators.
Does Subtitle Composer have a free plan?
Yes — Subtitle Composer is open source under the Open Source license and free to use.
What platforms does Subtitle Composer run on?
Subtitle Composer runs on Linux.
Is Subtitle Composer still active?
PulseGate's liveness checks currently classify Subtitle Composer as active.
What tools are similar to Subtitle Composer?
Similar tools tracked by PulseGate include subtitletools, Subtitles, and Captioner.subtitletoolsSubtitlesCaptioner
Who develops Subtitle Composer?
Subtitle Composer is developed by Subtitle Composer Team.
Is Subtitle Composer open source?
Yes — Subtitle Composer is open source under the Open Source license.

At a glance

Platforms
Desktop
Languages
English
License
Open Source
First seen
Jul 21, 2026
Activity
🟢 Active
Status
🟢 Active
Built for
Video editors and subtitle translators
Model
Open source
Solves
Editing and synchronizing subtitles for video files with precision and advanced tools.

Developer

Subtitle Composer Team

Live coverage

Confidence
Medium · 70
Indexed
Jul 21, 2026
Lifecycle
Alive
Activity
Active
First seen
Jul 2026
Last seen
1w ago
Identity audit (10)
Entity ID
cmrv3zla604uhqa6k0u0rvc2i
Slug
subtitlecomposer-flathub-org
Lifecycle last checked
Jul 21, 2026
Verification state
Indexed for public listing
Claim / listing state
Unclaimed · listed: yes
Index status
Included in index
Latest evidence snapshot
Jul 21, 2026
Timeline basis
Indexed-at chronology (no inferred launch/funding milestones).
Last updated
Jul 21, 2026
Canonical URL
https://flathub.org/apps/org.kde.subtitlecomposer

Similar apps

Other apps tracked under the same category.

  • subtitletools
    pypi.org
  • Subtitles
    subtiled.com
  • Captioner
    captioner.io
  • subtitle-capturer
    pypi.org
  • Subtitle Extractor
    ccm.net
  • autosubs-whisper
    pypi.org