Hi @alvarodamin , at this time there is still no option to set the transcription language via API. However, my team is working closely with product teams to facilitate API parity across the board and advocate for developer customer experiences.
At this time, you may want to try RTMP to livestream the meeting to a 3rd party transcription API that supports the languages you need or download the audio file from the cloud recording API and pass the audio through a 3rd party transcription API.