SubStudio

SubStudio is a web tool that transcribes uploaded videos or audio with Whisper via Together AI, then lets users edit, style with six presets and export subtitles with word-level timestamps.

SubStudio is a browser-based subtitle tool that turns spoken audio in a video into timed, styled captions. Transcription runs on Whisper through Together AI. Users upload a file or paste a direct media link, and the service handles transcription, alignment and styling without manual timing work. The tool is aimed at people who publish short-form and spoken-word video and need captions without learning a full editing suite. Creators, social media teams and anyone working with talking-head clips, interviews or voice recordings fit the use case. Audio-only files are accepted too, so it also serves podcast-style material. In practice, the workflow moves through a few stages: import, process, edit, review and export. Uploads accept MP4, MOV, WEBM and MP3 files up to 500MB, and links must point straight at a file ending in .mp4, .mov, .webm, .mp3 or .wav. Processing is described as taking roughly one to three minutes depending on length. Once the transcript is ready, an editor shows each subtitle line with start and end times, a search box for finding specific phrases, and a count of subtitles and words. Timestamps are generated per word, which helps captions stay in step with speech. Six style presets cover the common looks: Classic, TikTok, Modern Box, Cinematic, Outline and Bold Center. A sample video lets visitors try the editor without uploading anything of their own. Among alternatives, SubStudio sits between plain transcription services that return a text file and heavyweight video editors with captioning as one feature among many. Its narrow focus keeps the interface simple, though it does not try to replace an editor for cutting or compositing footage. The homepage states that export is available in any format needed, but it does not list the formats, so buyers who depend on a specific subtitle file type should check before committing.