SmartSub vs Translate.Video

SmartSub is an open-source desktop app for transcription, subtitle translation, proofreading, AI dubbing and video subtitle rendering. It runs on Windows, macOS and Linux, and is free with no local usage limits. For local processing, its maker says models process files on the user's computer, so those files do not leave the device. Transcription options include whisper.cpp, faster-whisper, FunASR, Qwen3-ASR and FireRedASR. Translation includes 20 services, including built-in free translation and integrations such as DeepSeek, Gemini and Ollama. The proofreading workspace offers video-synced editing, undo and redo, search and replace, and AI proofreading. SmartSub can generate speech from subtitle lines, align audio to the timeline and clone voices with ZipVoice, Volcengine or ElevenLabs. It can burn subtitles into video or package soft subtitles, preview styles and include dubbed audio. It also downloads videos from links using yt-dlp and lux, supporting more than 1,800 sites. Cloud transcription uploads audio to the configured provider endpoint; the README advises against using it for sensitive content.

Translate.Video is a web service for translating videos and preparing captioned or dubbed versions. It offers automated transcripts, closed captions, subtitle generation and translation, dubbing, AI voice-over, and voice recording. The service says it translates videos into 75+ languages and lists 81 supported languages. Users can create a voice clone from 50 seconds of audio, described as speaking 75+ languages. SRT, VTT, and MP4 are among its listed formats. YouTube and Instagram integrations support publishing translated videos; users can manage multiple YouTube channels and add localized Instagram captions and hashtags. Teams can add members, assign roles, and set access restrictions. The listed Basic plan includes 20 dubbing minutes, 20 auto-caption or subtitle minutes, 20 export minutes, and 2 GB of storage for $29 a month. Displayed plans list English-only multi-speaker diarization. Data deletion after cancellation is listed at 14 days for Basic and Pro, and 7 days for Premium.