Un experimento rápido: translating Cloudflare Stream captions with Workers AI

This post details an experiment using Cloudflare Workers AI and the m2m100-1.2b translation model to translate automatically generated VTT captions for Cloudflare Stream videos. It describes the process of parsing VTT files, running translation inference calls in parallel using `Promise.all`, and re-exporting the translated captions back to VTT format. The post highlights the impact of fragmented input text on translation quality and demonstrates an improvement by implementing a pre-processing step to consolidate caption cues into full sentences before translation. It also notes the rapid development cycle possible with Workers AI and the need for language expertise to evaluate translation quality.