Offline AI Subtitle and Dubbing Tools

OpenChatCut is a local-first AI video editor for creators who want conversational editing with control over the finished cut. AI changes become editable clips, captions, effects and audio tracks in the same project you can adjust manually. It's a free, open-source ChatCut alternative under AGPL-3.0, with a desktop app for macOS, Windows and Linux.

Aiko is a paid, native transcription app for macOS, iOS and visionOS that processes speech on your device with OpenAI's Whisper model. It's for people turning meetings, lectures or other recordings into text while keeping the audio local, including sensitive recordings.

insanely-fast-whisper is a command-line tool for people who want to transcribe audio on their own hardware, with a focus on processing long recordings quickly. It runs OpenAI's Whisper locally on NVIDIA GPUs or Apple Silicon Macs, including support for Windows with CUDA. The project is open source under the Apache 2.0 license.

Whishper is a self-hosted speech-to-text app for people who need transcripts or translated subtitles from audio and video. Its browser interface brings transcription, translation and subtitle editing together, with all three running on your own machine. It can work offline, so local media doesn't need to go to a cloud transcription service.

MacWhisper is a native macOS transcription app for people working with interviews, lectures, meetings and other recorded audio. It runs speech recognition on your own Mac, so local transcription keeps audio on your device. It also offers cloud transcription through services such as OpenAI, ElevenLabs and Deepgram, which send audio off your machine.

VideoLingo is a self-hosted video translation app for creators and educators who need bilingual subtitles or dubbed versions of their videos. It brings transcription, translation and subtitle timing into one browser interface, with dubbing as an optional output. The project is open source under Apache 2.0; a separate hosted service offers subtitle translation and dubbing.

Immersive Translate is an AI translation extension and mobile app that keeps original text alongside its translation. It's aimed at students, researchers and people who read foreign-language material for work. The bilingual page layout lets readers compare passages without replacing the source text.

Whisper WebUI turns audio into transcripts and subtitles through a browser interface that runs on your own machine or a self-hosted server. It's for people captioning videos, transcribing recordings or translating spoken content who want local speech processing. The project is open source under Apache 2.0 and supports Docker and Pinokio.

MuseTalk is a local AI lip-sync model for creators and developers working on video dubbing or virtual avatars. It edits the face in an existing video to match supplied speech, including Chinese, English and Japanese audio. It runs on Windows and Linux with NVIDIA GPUs, and can process videos generated by MuseV.

pyVideoTrans translates spoken audio into another language and produces a video with translated subtitles and AI dubbing. It's for people adapting videos for audiences in other languages who want control over which parts run locally. It recognizes speech directly, so the original video doesn't need subtitles.

WhisperX is an open source speech-to-text tool for people transcribing interviews, meetings, and long recordings on their own computer. It builds on OpenAI's Whisper to produce transcripts with word-level timestamps and optional speaker labels.

Buzz transcribes and translates speech on your own computer using OpenAI's Whisper. It's for people who need transcripts or subtitles from recordings, plus live captions from a microphone. Local transcription works offline; the optional OpenAI Whisper API sends audio to a cloud service.

Lingarr is a self-hosted subtitle translator for people who maintain a media library and want subtitles in another language. It automates translation of subtitle files using a service you choose, with support for both local AI and hosted translation providers.

subgen generates subtitles on your own hardware for personal media libraries, including films and shows that don't have usable subtitles available. It's an open source, MIT-licensed Python service that runs in Docker or as a standalone application. Speech recognition runs locally using Whisper models through faster-whisper and stable-ts, with support for CPU processing and NVIDIA GPUs through CUDA.

Vibe is an open source desktop app for people who need transcripts or subtitles without uploading their recordings to a transcription service. It runs on macOS, Windows and Linux under the MIT license. Audio transcription works fully offline, with processing on your own computer.

Whisper ASR Webservice turns Whisper speech recognition into a self-hosted API for developers adding transcription to their apps or services. It runs in Docker on your own machine or server, with CPU processing or CUDA GPU acceleration. The Python project is open source under the MIT license.

Speech Note combines offline dictation, reading aloud and translation in a desktop app for Linux and Sailfish OS. It's for people who want to take multilingual notes, type by voice or listen to text without sending their words to a cloud service. Speech and text processing stay on your device; models are downloaded separately through the app's graphical browser.

Subtitle Edit is an MIT-licensed subtitle editor for Windows, macOS and Linux. It's for people creating captions, translating dialogue or fixing subtitles that don't match the video. Its core editing, conversion and video playback work offline on your device, with optional AI tools for transcription and translation.