mp3_to_wav.js This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters. Sorted by: 1. First, install the FFmpeg.js library using npm by running the following command in your Angular 6 project directory: npm install @ffmpeg/ffmpeg. Next, import the FFmpeg library and define a function that takes a WebM blob as input and converts it to an MP3 blob using FFmpeg.js: import * as FFmpeg from '@ffmpeg/ffmpeg'; async Installing the ffmpeg, because of some licensing shit, by default, the ffmpeg doesn't support amr, you must install opencore-amr. The easiest way is brew install ffmpeg --with-opencore-amr --with-speex . I have an audio file with 256 bit rate and sampling rate - 8000Hz. I would just like to reduce the bit rate to 128/64 kbs. I tried converting to mp3 and back to wav, ffmpeg -i input.wav 1.mp3 ffmpeg -i "1.mp3" -acodec pcm_s16le -ar 4000 out.wav but this reduced sampling rate as well. MPEG was developed in 1993 as MPEG-1 and it was a very popular format for audio and video storage. Today it is the most compatible media format in the world. When the format first appeared, it was innovate and ahead of its time, provided relatively high quality files while reducing their size and made it easy to upload and download files by That's how to convert audio files using FFMpeg and PHP. If you need to convert your audio files to one or more different formats, you now have the essential skills to do so. However, this is just the start, as there is so much more that you can do. I hope that this tutorial has encouraged you to learn more. Explore PHP-FFMpeg and tweet me what Or, using FFMPEG: ffmpeg -i input.wav -codec:a libmp3lame -b:a 8k output.mp3 If you also want to reduce to mono and a 8k sample rate: ffmpeg -i input.wav -codec:a libmp3lame -b:a 8k -ac 1 -ar 8000 output.mp3 Using the second compressed an hour of audio to under 5MB. Trying to convert a wav file to a wav uLaw in python. Using pydub's AudioSegment I am able to convert to mp3 using the following : AudioSegment.from_wav(fromFile).export(toFile, format="mp3", bitrate="128k") What would be the equivalent for wav uLaw using the ffmpeg pcm_mulaw codec and specifying 8bit, 8kHz? The command using ffmpeg directly is : ffmpeg -i input.wav -c:a pcm_s16le -ar 44100 output.wav See a list of encoders with ffmpeg -encoders; See what audio sample formats (bit depth) an encoder supports with ffmpeg -h encoder=pcm_s16le; Or manually set the audio sample format. With the -sample_fmt option. ffmpeg -i input.wav -sample_fmt s16 -ar 44100 output.wav See a list of audio 3C2ynT.

convert wav to mp3 ffmpeg