Speechlab

What it does

Speechlab transcribes, translates, captions, subtitles, and dubs video and audio in 50+ languages. It includes a waveform timeline editor with per-segment text editing and segment-level re-rendering, so you can fix one sentence without reprocessing the whole file. It is built for media publishers, enterprise marketing teams, corporate training groups, and localization service providers.

Speechlab is an AI dubbing and translation platform with a full editor rather than a black-box upload tool. You can drag and drop a file, paste a YouTube link, or bulk-import content, then get a diarized transcript with timestamps and speaker labels. From there you can generate captions, translate segment by segment, create SRT subtitles, assign a voice per speaker, and render a dub. The waveform timeline editor supports per-segment text editing, timing adjustment, and segment-level re-rendering, so changing one sentence does not reprocess the whole file. Source-clone mode captures the original speaker's voice characteristics and synthesizes them in the target language, and each speaker can be cloned independently. Pricing is credit-based and per-minute. The free plan includes 2 projects of free dubbing, and no card is required to start. Pro costs $0.6/min and adds API access, 4K video resolution, and sharing for review and edit. Enterprise adds custom integrations, volume-based discounts, team roles, native linguist review, and custom voices. Voice cloning availability varies by language pair, so check your target languages before committing. The credit model can also make costs hard to estimate upfront because each language you add costs credits based on source media duration.