Introduction
mediainfo.js is a web-compatible version of the MediaInfoLib, originally written in C++. Compiled from C++ to WebAssembly, mediainfo.js enables browser compatibility while also supporting Node.js execution.
What can mediainfo.js do?
mediainfo.js analyzes various media files and provides detailed information about them. While the original MediaInfo program runs on computers or servers, mediainfo.js is designed for browser use. It is a library that can be integrated into web or Node.js projects and also comes as a command-line tool.
Visit the demo page to try mediainfo.js yourself.
Example
Click to view a sample MP3 file analysis.
General
Format : MPEG Audio
File size : 6.06 MiB
Duration : 3 min 23 s
Overall bit rate mode : Variable
Overall bit rate : 243 kb/s
Album : CC Affiliates Mixtape #1
Album/Performer : Creative Commons
Track name : Povo Que Caís Descalço
Track name/Position : 1
Compilation : Yes
Performer : Dead Combo
Genre : International
Recorded date : 2017-03-03 15:14:12 UTC
Writing library : LAME3.99r
Copyright : Attribution-NonCommercial 3.0 International: http://creativecommons.org/licenses/by-nc/3.0/
Cover : Yes
Cover MIME : image/jpeg
Comment : URL: http://freemusicarchive.org/music/Dead_Combo/Creative_Commons_The_2015_Unofficial_Mixtape/01_Povo_Que_Cais_Descalco / Comments: http://freemusicarchive.org/ / Curator: Creative Commons / Copyright: Attribution-NonCommercial 3.0 International: http://creativecommons.org/licenses/by-nc/3.0/
Audio
Format : MPEG Audio
Format version : Version 1
Format profile : Layer 3
Format settings : Joint stereo
Duration : 3 min 23 s
Bit rate mode : Variable
Bit rate : 243 kb/s
Minimum bit rate : 32.0 kb/s
Channel(s) : 2 channels
Sampling rate : 44.1 kHz
Frame rate : 38.281 FPS (1152 SPF)
Compression mode : Lossy
Stream size : 5.90 MiB (97%)
Writing library : LAME3.99r
Encoding settings : -m j -V 0 -q 0 -lowpass 22.1 --vbr-mt -b 32
Image
Format : JPEG
Width : 800 pixels
Height : 800 pixels
Color space : YUV
Chroma subsampling : 4:4:4
Bit depth : 8 bits
Compression mode : Lossy
Stream size : 140 KiB (100%) / 140 KiB (2%) / 140 KiB (2%) / 140 KiB (2%)
How to use mediainfo.js?
Check out the example page.
JavaScript library
Typically, you would use mediainfo.js as a library for your web project. Depending on your needs, you can integrate it with a web bundler or load it as a stand-alone file from a CDN or your web server.
Command-Line interace
mediainfo.js is also available as a CLI program. Install it as usual, and you're ready to go:
$ npm install mediainfo.js
$ mediainfo.js video.mp4
This is useful when you can't install programs on your server but can use NPM packages.