To achieve the functionality you described, you'll need to integrate cloud services, as OutSystems does not provide this functionality out-of-the-box. For audio extraction from video and speech-to-text conversion, you could use the following services:

• AWS Elemental MediaConvert This service can extract audio from video files. For setup instructions and more information, you can visit the AWS documentation on setting up audio-only outputs. Ref : https://docs.aws.amazon.com/mediaconvert/latest/ug/setting-up-audio-only.html
• Amazon Transcribe: This is suitable for converting speech to text. A useful guide on how to automate audio transcription using AWS services, including API Gateway, S3, SNS, Lambda, and Amazon Transcribe can be found in an article by Manish Diddi.

Microsoft offers similar services through Azure:

• Azure Media Services: This service provides comprehensive media processing capabilities, including audio extraction.
• Azure Speech Service: This is useful for converting audio into text with advanced speech recognition features.

These services will enable you to add video and audio processing capabilities to your OutSystems applications.

I’ve had to pull audio from videos a few times, especially when working on subtitles or podcasts from recorded footage. I usually convert the video into an audio format first, then use a transcription tool for speech-to-text. OutSystems alone won’t handle the conversion, so I do that step separately before integrating anything.

The last time I used a TRP file and needed to convert it to audio, I went with this TRP converter. It was quick and didn’t mess up the quality, which was a relief because TRP files can sometimes be tricky. Check it out here if you want: https://www.movavi.com/video-converter/trp-converter.html