Subtitle & Caption Tools

Browse 40 curated subtitle & caption tools resources for video development on Awesome Video.

Topics

• Subtitles & Captions 25 resources

Resources (showing 1–40 of 40)

• imscED — IMSC subtitle/caption editorIMSC (TTML) subtitle/caption editor built on imscJS, with a Video Image Burner REST service for IMSC burn-in.
• subconv — SCC (CEA-608) to WebVTT converterRuby library converting SCC (EIA-608/CEA-608) caption files to WebVTT; niche 608 conversion path.
• Whisper-WebUI — subtitle generation UIGradio UI generating subtitles from files/YouTube/mic using faster-whisper; outputs SRT/WebVTT, translation (NLLB/DeepL), Silero VAD, diari…
• whisper-vtt2srt — AI transcript WebVTT→SRT cleanerZero-dependency CLI/Python tool converting Whisper WebVTT to clean SRT, fixing karaoke-accumulation and filtering glitches.
• AutoSubSyncSubtitle auto-sync GUI wrapping ffsubsync/autosubsync/alass; can sync against a reference subtitle instead of the video.
• subtpRust parser for SRT and WebVTT with round-trip parse/render of cues, comments, styles, and regions.
• subsaiSubtitle generation tool with WebUI, CLI, and Python API using faster-whisper; exports srt/ass/ssa/sub/json/txt/vtt with translation suppor…
• whisper-subtitle-generatorCross-platform GUI for batch subtitle generation with SRT/VTT/JSON export, translation, and GPU acceleration. MIT.
• WhisperXASR pipeline producing word-level timestamps via wav2vec2 forced alignment plus speaker diarization, useful for accurate subtitle cue timin…
• stable-tsWhisper-based transcription with forced alignment and audio indexing, including a mode that loads audio in 30s chunks for near-streaming su…
• AutoSubtitle — Whisper subtitle GUI with burn-inPyQt5 GUI that generates bilingual subtitles using faster-whisper and Silero VAD with LLM translation and FFmpeg burn-in/hardcode.
• SCF — Subtitling Conversion Framework (EBU)IRT's Subtitling Conversion Framework converting between EBU STL, EBU-TT Part 1 (Tech 3350/3360) and EBU-TT-D (Tech 3380) with strict confo…
• STL2TTML — EBU STL to TTML/WebVTT converterJava tool converting EBU STL (Tech 3264) binary subtitle files to TTML and WebVTT for streaming delivery.
• vidstack/captions — Lightweight JS Caption Parser/RendererModern ~5kB JS library parsing and rendering VTT/SRT/SSA captions, with server-side support, VTT-region rollup captions, and CSS styling.
• WhisperTimeSync — Transcript-to-Whisper Subtitle AlignerAligns an existing accurate transcript over Whisper timestamps to produce SRT with both good text and good timing.
• subgen — Whisper Auto-Subtitles for Media ServersAuto-subtitle generator using Whisper (stable-ts + faster-whisper) for Jellyfin/Plex/Emby/Bazarr, CPU or CUDA.
• CcextractorCCExtractor - Official version maintained by the core team
• PycaptionPython module to read/write popular video caption formats
• LibcaptionFree open-source CEA608 / CEA708 closed-caption encoder/decoder
• AutoSubAutoSub is a CLI application to generate subtitle file (.srt) for any video file using Mozilla DeepSpeech
• Webvtt RubyWebVTT Ruby parser and segmenter.
• Webvtt PyRead, write and segment WebVTT caption files in Python.
• IMSC validator
• ttconv: subtitle/caption format converterConverts EBU STL, IMSC/TTML/SMPTE-TT/EBU-TT-D and 608/SCC into IMSC, WebVTT and SRT
• imscJS: IMSC/TTML/SMPTE-TT/EBU-TT-D rendererRenders IMSC/TTML/SMPTE-TT/EBU-TT-D subtitles and captions to HTML
• The ultimate guide to CCs
• Cea608 JSA JavaScript project designed to extract CEA-608 captions.
• Caption InspectorCaption Inspector is a reference decoder for Closed Captions (CEA-608 and CEA-708).
• Pycaption CLIA command line interface for the pycaption module.
• Extract SubtitlesExtract Subtitles From Video
• TV Subtitle ExtractionSystem for extraction of subtitles from TV broadcasts.
• Subs ExtractExtracts per-sentence subtitles + audio from a subtitle file + video file.
• Pysub ParserUtility to extract the text and timestamps of a subtitle file (.srt, .ssa, .sub, .txt).
• Node Thumbnails WebvttVideo thumbnail generator generating WebVTT spec file
• Autosub (BingLingGroup)Command-line utility to transcribe/translate from video/audio/subtitles to subtitles
• STRCleanerScript that extracts all the text from a subtitles file ignoring time indications, HTML tags and other alien info.
• Serverless SubtitlesServerless Subtitles can handle a video input, extract the sound, transcript it and generate different subtitle files for your video.
• Extract Subtitleextract subtitles from video.
• Cea ExtractorParsing and display logic for CEA-608 caption data in fragmented MP4 files.
• Vtt JSA JavaScript implementation of the WebVTT specification