post https://api.synthesia.io/v2/translate/manual
Upload Translated XLIFF Content to Create Translated Video
This endpoint allows you to upload a translated XLIFF files back into Synthesia to create a translated version of a Synthesia video.
You must call this endpoint for every translated version for a given video ID.
Response:
- On success, returns a confirmation message along with the new translated_video_id.
- On failure, returns an error message indicating the issue