I'm building an Alexa skill associated with a small serverless lambda function that converts video file in audio using AWS Elastic Transcoder service. However Alexa is really specific on the format that it wants: MP3 with bit rate 48 kbps, and sample rate 16000 Hz.
Is there any AWS Elastic Transcoder Preset predefined for this? I try to define my own with Bitrate 48 SampleRate auto (because apparently 16000Hz is not an option) but without any success.
Any help on this would be highly appreciate it.
Thank you!
Following preset settings worked for me: