Checksub

Checksub is an online platform that provides automated subtitle generation, translation, and AI dubbing services for video content. The tool is designed to help content creators, media companies, educational institutions, and marketing teams localize their videos into multiple languages efficiently. At its core, Checksub uses artificial intelligence to analyze the audio track of a video, transcribe the spoken words into text, and then synchronize the resulting subtitles with the timing of the speech. This process eliminates the need for manual transcription and time-coding, significantly reducing the effort required to add captions to videos. Once subtitles are generated, the platform can translate them into more than 180 languages. The translation engine leverages neural machine translation to preserve context and nuance, producing natural-sounding text rather than literal word-for-word conversions. Users can review and edit the translated subtitles through a built-in editor before finalizing them. The subtitles can be exported in various formats, such as SRT, VTT, or embedded directly into the video file. Beyond subtitles, Checksub offers an AI dubbing feature that replaces the original spoken audio with a synthetic voice in a target language. The system isolates the human voice from background music, sound effects, and ambient noise using voice isolation technology. This ensures that only the speech is replaced, while the original audio environment remains intact — footsteps, door sounds, background music continue to play naturally. The dubbing process can be applied to multiple speakers in the same video, with each voice being detected and assigned a separate synthetic voice that matches the speaker’s tone and pacing. A key capability is voice cloning. Users can upl