VideoLingo

VideoLingo is a service that translates video into bilingual subtitles and can add dubbed audio. It focuses on single-line subtitles with careful timing, and on translating field-specific terms correctly. A free trial covers a short video, and an API with docs is available.

The pipeline handles transcription, translation, subtitle segmentation and dubbing in one go. Higher tiers add voice cloning through Fish Audio and voice separation for cleaner dubbed tracks. Input is supported in eight languages on paid plans, while the free tier only handles English and Chinese videos.

The service grew out of an open-source project that has a large following on GitHub. Output on the free plan is limited to 480p and carries a watermark, so the paid tiers are needed for finished work.