Parsing wav files manually client side is relatively simple once you understand their structure and wouldn't take more then a Kb or 2 of code, I don't know how hard it would be to convert to MP3 though, specs on that are either hard to find or overly complex. const { exec } = require ('child_process') exec (`ffmpeg -i $ {wavFilePath If you plan to often convert Wma to mp3, the below script automatically convert and delete everything in the folder given as an argument, It improves a bit the above-mentioned. In addition, the ffmpeg command is a bit different than the first proposed, if the first one does not work, use the below one. make sure ffmpeg is installed in system and executable from everywhere and second thing is make sure that 'fluent-ffmpeg' npm package is also installed in project. – Yatender Singh Apr 4, 2017 at 4:51 WEMConverter v1.0. WEMConverter's ability to convert any audio file to WEM is powered by ffmpeg -- Without ffmpeg, you would only be able to drop WAV files for conversion. Drag and drop audio files or WEM files onto WEMCompilerTool to convert them to the other format (WEM => WAV, audio => WEM) Assets 3. GitHub is where people build software. We start with this mono file: test.wav. In audacity it looks like this: Then we convert it to stereo with this command: ffmpeg -i test.wav -ac 2 out.wav Now it looks like this: Notice that the amplitude changed! Finally, we convert the stereo back to mono: ffmpeg -i out.wav -ac 1 back.wav We should get the same file from which we started. The problem is that the downloaded audio file is either a .webm or a .mp4 file, which I'd like to convert to a .mp3 file. Is there a way to read the filetype (webm/mp4) first and then run a code that converts it to a mp3 file? from pydub import AudioSegment # Specify the path to the FFmpeg executable ffmpeg_path = r"C:\Users\תמרה\AppData\Local\ffmpegio\ffmpeg-downloader\ffmpeg\bin\ffmpeg.exe" AudioSegment.ffmpeg = ffmpeg_path AudioSegment.ffprobe = ffmpeg_path # Load the MP3 file mp3_file = r"C:\Users\תמרה\Tea Time - Ofshane.mp3" audio = AudioSegment.from I'm using to ffmpeg to extract 10" snippets in WAV audio from a m3u8 hls stream in two steps like this: ffmpeg -i XXXX.m3u8 -t 10 -c copy -bsf:a aac_adtstoasc -vn output.acc ffmpeg -i output.acc output.wav How can I do it in just one step to avoid the intermediate file and maybe speed the process? .

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