mpeg4-mimetype

Get the RFC 6381 mimetype string for mediasource usage

Prerequisites

$ pip install pre-commit

Installation

$ pre-commit install --install-hooks
$ npm run build

Usage

Naive single buffer

$ node test /Users/eugene/Downloads/rendering-artefacts.mp4
video/mp4; codecs="mp4a.40.2,avc1.4d0028"; profiles="isom,iso2,avc1,mp41"
is fragmented: false
track #0 codec string: mp4a.40.2
track #1 codec string: avc1.4d0028
video/mp4; codecs="mp4a.40.2, avc1.4d0028"

$ node test /Users/eugene/Downloads/GMT20180912-000144_Daily-Hang_1600x800.mp4
video/mp4; codecs="mp4a.40.2,avc1.64001f,text"; profiles="isom,mp42"
is fragmented: false
track #0 codec string: mp4a.40.2
track #1 codec string: avc1.64001f
track #2 codec string: text
video/mp4; codecs="mp4a.40.2, avc1.64001f, text"

Chunked

$ node test-chunk.js /Users/eugene/Downloads/rendering-artefacts.mp4
video/mp4; codecs="mp4a.40.2,avc1.4d0028"; profiles="isom,iso2,avc1,mp41"
is fragmented: false
track #0 codec string: mp4a.40.2
track #1 codec string: avc1.4d0028
video/mp4; codecs="mp4a.40.2, avc1.4d0028"

$ node test-chunk /Users/eugene/Downloads/GMT20180912-000144_Daily-Hang_1600x800.mp4
video/mp4; codecs="mp4a.40.2,avc1.64001f,text"; profiles="isom,mp42"
is fragmented: false
track #0 codec string: mp4a.40.2
track #1 codec string: avc1.64001f
track #2 codec string: text
video/mp4; codecs="mp4a.40.2, avc1.64001f, text"

Notes

The version of mp4box that's in npm is out of date. I downloaded and built the latest version and built it using grunt.

The file just uses the ./mp4box.js/dist/mp4box.all.js file in the build.