Violin: AI Translates Video Content

Together AI launches Violin, an open-source AI tool for video translation and interactive content analysis.

Screenshot showing Violin's video player with original and translated subtitles.
Violin translates video content and offers interactive chat features.· Together AI
Visual TL;DR
Video content inaccessibleDriver
language divides limit global reach of dominant video medium
From the article 4 mentionsThe need for such a tool is clear; studies show a significant portion of popular online video content remains inaccessible to non-English speakers.
Together AI launches ViolinCore
open-source AI tool for video translation and analysis
From the articleDeveloped by Together AI, Violin orchestrates a three-stage pipeline: automatic speech recognition (ASR) to transcribe audio, large language models (LLMs) for translation, and text-to-speech (TTS) synthesis for dubbed audio.
Three-stage pipelineContext
From the articleDeveloped by Together AI, Violin orchestrates a three-stage pipeline: automatic speech recognition (ASR) to transcribe audio, large language models (LLMs) for translation, and text-to-speech (TTS) synthesis for dubbed audio.
Break language barriersEffect
making video content accessible across languages globally
Interactive analysisEffect
enables deeper understanding of video content
From the articleThis capability transforms passive viewing into an interactive learning experience.
Whisper V3 transcriptionCore
state-of-the-art model for automatic speech recognition
From the articleFor transcription, it utilizes Together’s Whisper V3.
Deepseek V4 Pro translationCore
From the articleDeepseek V4 Pro serves as the default translator, with support for user-defined translation rules to ensure accuracy.
Cartesia Sonic 3 synthesisCore
natural-sounding voices in various languages for dubbed audio
From the articleThe synthesized speech uses Cartesia’s Sonic 3, offering natural-sounding voices in various languages.
Contents(3)

Video has become a dominant medium for information, yet language divides limit its global reach. A new open-source video translation tool called Violin aims to bridge this gap, leveraging advanced AI to make content accessible across languages.

Developed by Together AI, Violin orchestrates a three-stage pipeline: automatic speech recognition (ASR) to transcribe audio, large language models (LLMs) for translation, and text-to-speech (TTS) synthesis for dubbed audio.

Breaking Down Language Barriers

The need for such a tool is clear; studies show a significant portion of popular online video content remains inaccessible to non-English speakers. Violin tackles this by employing state-of-the-art models. For transcription, it utilizes Together’s Whisper V3. Deepseek V4 Pro serves as the default translator, with support for user-defined translation rules to ensure accuracy.

The synthesized speech uses Cartesia’s Sonic 3, offering natural-sounding voices in various languages. Violin avoids voice cloning, opting for distinct voices and subtly overlaying them to maintain clarity without mimicking the original speaker.

Interactive Video Analysis

Beyond simple translation, Violin integrates a multimodal chat assistant. This feature allows users to query the video's content, asking questions that are answered based on both the spoken audio and visual cues. It achieves this by processing recent video frames alongside subtitle context, feeding them into vision-language models like Qwen3.5-397B-A17B.

This capability transforms passive viewing into an interactive learning experience.

Accessible Across Interfaces

Violin is designed for broad usability, offering a web application for no-code users, a command-line interface (CLI) for developers, and agent skills for AI practitioners. The entire codebase is released under a permissive MIT license, encouraging community contributions and adaptations.

The project aims to foster open collaboration to make video content truly language-agnostic.

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Daniel Singer

Written by

Daniel Singer

Editor, StartupHub.ai

Daniel Singer is the editor of StartupHub.ai, a technology expert and thought leader on AI and its applications across sectors, from fintech and healthcare to developer tooling and consumer software. He writes and tests the tools covered here thoroughly and regularly, and built StartupHub.ai to give founders, operators and buyers a clearer read on what they are actually being sold.