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smacke avatar

smacke/subsync

0
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7,747 stars·320 forks·Python·MIT·21 views

Subsync

Subsync is a subtitle synchronization tool that aligns subtitle timing to video audio tracks or other synchronized subtitle files. It functions as an audio-based aligner and timing validator to ensure dialogue and captions match during playback.

The system utilizes audio-text cross-correlation to match voice activity peaks in audio tracks against subtitle timestamps. It includes a remote media sync client that retrieves files from external servers using standard network protocols for local processing.

To ensure accuracy, the tool calculates confidence scores to block updates that fall below a quality threshold or contain implausible time offsets. Processing efficiency is managed through segment-based audio sampling and duration limits to reduce analysis time for long files.

The core logic can be driven through programmatic interfaces and monitored via callback handlers.

Features

  • Subtitle Synchronization - Aligns subtitles to a video by matching voice activity in the audio track with the timing of the text.
  • Audio-Text Cross-Correlation - Matches voice activity peaks in audio tracks against subtitle timestamps to calculate timing offsets.
  • Media Post-Processing Utilities - Provides automated tools to fix timing issues in video files and subtitles across large media collections.
  • Alignment - Calculates mathematical alignment scores to prevent subtitle updates that fall below a quality threshold.
  • Synchronization Quality Validation - Prevents subtitle modifications when the alignment score is too low or the time offset is implausible.
  • Timing Validation - Calculates alignment scores to ensure subtitle synchronization is accurate before applying modifications.
  • Performance Optimization - Reduces processing time for long files by sampling specific segments or limiting the analysis duration.
  • Audio Segmentation Utilities - Reduces analysis time by processing specific time windows of audio instead of the full duration.
  • Media Automation - Tool for automatically synchronizing subtitles with video.
  • Audio and Subtitle Tools - Tool to automatically synchronize subtitles with video.

Star history

Star history chart for smacke/subsyncStar history chart for smacke/subsync

How this analysis was created: This summary and feature list are AI-generated from collected project material and can contain mistakes. Stars, license and language are imported from GitHub. Inclusion does not mean that we have tested or audited this project. Check the source documentation for any feature you depend on. Learn more on our About page.

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Projects sharing features with Subsync

These projects share indexed features with Subsync. Shared tags can include platform or build tooling; verify the primary use case before treating a result as a replacement.
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  • smacke/ffsubsyncsmacke avatar

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    Bazarr is an automated subtitle management system and downloader designed to discover, acquire, and synchronize subtitles for movies and TV shows. It functions as a media library companion that integrates with external media managers and servers via APIs to track missing subtitles and ensure libraries are up to date. The project distinguishes itself through advanced media processing, using neural-network audio transcription to generate subtitles from audio tracks or translate foreign dialogue into English. It also features audio-based synchronization to align subtitle timing with video conten

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Frequently asked questions

What does smacke/subsync do?

Subsync is a subtitle synchronization tool that aligns subtitle timing to video audio tracks or other synchronized subtitle files. It functions as an audio-based aligner and timing validator to ensure dialogue and captions match during playback.

What are the main features of smacke/subsync?

The main features of smacke/subsync are: Subtitle Synchronization, Audio-Text Cross-Correlation, Media Post-Processing Utilities, Alignment, Synchronization Quality Validation, Timing Validation, Performance Optimization, Audio Segmentation Utilities.

Which projects share features with smacke/subsync?

Projects with overlapping indexed features include: trash-guides/guides — Guides is a collection of standardized architectural guides and best practices for deploying containerized media… smacke/ffsubsync — ffsubsync is a subtitle synchronization tool that aligns subtitle timestamps to audio tracks or reference files using… morpheus65535/bazarr — Bazarr is an automated subtitle management system and downloader designed to discover, acquire, and synchronize… nadermx/backgroundremover — Backgroundremover is an AI-powered tool that removes backgrounds from both images and videos, accessible through a… subtitleedit/subtitleedit — Subtitle Edit is a desktop application designed for the creation, synchronization, and adjustment of text-based… chinesesubfinder/chinesesubfinder — ChineseSubFinder is an automated subtitle manager and downloader specialized in retrieving Chinese language subtitles.…