A list of useful commands for the FFmpeg command line tool.
Download FFmpeg: https://www.ffmpeg.org/download.html
Full documentation: https://www.ffmpeg.org/ffmpeg.html
ffmpeg -i input.mp4 -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -level 3 -an -vf "scale=-1:1440, reverse" -preset veryslow -g 2 output.mp4 | |
// -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -level 3 | |
// Encode for web with a good balance of browser compatibility and compression ratio | |
// -an | |
// Strip audio tracks | |
// -vf "scale=-1:1440, reverse" | |
// Scale video to 1440px wide, maintaining aspect ratio |
A list of useful commands for the FFmpeg command line tool.
Download FFmpeg: https://www.ffmpeg.org/download.html
Full documentation: https://www.ffmpeg.org/ffmpeg.html
Command Flags
Flag | Options | Description |
---|---|---|
-codec:a |
libfaac, libfdk_aac, libvorbis | Audio Codec |
-quality |
best, good, realtime | Video Quality |
-b:a |
128k, 192k, 256k, 320k | Audio Bitrate |
-codec:v |
mpeg4, libx264, libvpx-vp9 | Video Codec |
Should be work with 0.18
Destructuring(or pattern matching) is a way used to extract data from a data structure(tuple, list, record) that mirros the construction. Compare to other languages, Elm support much less destructuring but let's see what it got !
myTuple = ("A", "B", "C")
myNestedTuple = ("A", "B", "C", ("X", "Y", "Z"))
A simple script with a few niceties that allows for multiple requestAnimationFrame
calls, and FPS pinning.
The script polyfills rAF if required, then overloads requestAnimationFrame
and cancelAnimationFrame
with a process that allows multiple frames to be queued up for rAF to run.
This is useful if there are multiple animations running on the page, you want all the callbacks to happen at once, and not on multiple rAF calls. This script is meant as a drop-in solution to that problem.
{ | |
"name": "my-app", | |
"version": "1.0.0", | |
"description": "My test app", | |
"main": "src/js/index.js", | |
"scripts": { | |
"jshint:dist": "jshint src/js/*.js", | |
"jshint": "npm run jshint:dist", | |
"jscs": "jscs src/*.js", | |
"browserify": "browserify -s Validating -o ./dist/js/build.js ./lib/index.js", |
(function (root, factory) { | |
if ( typeof define === 'function' && define.amd ) { | |
define([], factory(root)); | |
} else if ( typeof exports === 'object' ) { | |
module.exports = factory(root); | |
} else { | |
root.myPlugin = factory(root); | |
} | |
})(typeof global !== "undefined" ? global : this.window || this.global, function (root) { |
// ---- | |
// Sass (v3.3.0.rc.2) | |
// Compass (v1.0.0.alpha.17) | |
// ---- | |
// | |
// map-fetch($map, $keys) | |
// | |
// An easy way to fetch a deep value in a multi-level map. Works much like | |
// map-get() except that you pass multiple keys as the second parameter to |