问题
I am currently working on a Chromebook application where I have to record an audio file with record/pause/resume features and then save the file in mp3 or ogg format. I am using mediaRecorder API to record the audio successfuly but the default file format Chrome supports is webm. I would like to know or get any help to convert/encode webm audio file to mp3 or ogg format using javascript to I could play it in any browser. I would be happy to share the code.
回答1:
For everyone who is still looking for an answer. I was using AWS S3 to upload the files, so I used AWS Elastic Trascoder to convert the files on the AWS from webm to mp3 format.
来源：https://stackoverflow.com/questions/52655028/converting-webm-audio-file-to-mp3-or-ogg