jdmichaud

Metadata

See metadata (and other data about the file):

ffmpeg -i input.mp4

Add metadata to video:

ffmpeg -i input.mp4 -metadata title="My Video Title" \

This does not currently work.

Render an image from a Dicom file (the last one in case the DICOM file contain an icon)
resize the image using the Bicubic interpolation method
apply the VOI Lut

convert isome.file[-1] -resize 50% -interpolate Bicubic -level 495,210 isome.file.png

-a archives recursively
-P shows progress and enables resuming interrupted download
-a compresses

rsync -azP -e 'ssh -p PORT' <user>@<IP>:/path/to/folder .

A Value is synonymous with ECMAScript Language Types, a fundamental data atom of javascript. A value can be primitive:

Write a buggy program:

int main() {
    int *p = 0;
    *p = 42;
    return 0;
}

Compile it with debug options:

	const data = await (await fetch('Tv-test-pattern-146649_640.png')).bytes();
	const decoder = new ImageDecoder({ type: "image/png", data });
	const frame = await decoder.decode();
	const bytes = new Uint8Array(frame.image.allocationSize());
	await frame.image.copyTo(bytes.buffer);

	#include <sys/mman.h>
	#include <string.h>
	#include <stdio.h>

	int main() {

	/*
	This is raw x86-64 machine code for a TINY leaf function:

	lea eax, [rdi + 1] ; compute (arg + 1)

	# python3 -mvenv venv && source venv/bin/activate && pip install matplotlib
	# python3 make_polygon.py
	import matplotlib.pyplot as plt
	import math

	def make_polygon(vertices):
	# compute centroid
	average_x = sum([vertex[0] for vertex in vertices]) / len(vertices)
	average_y = sum([vertex[1] for vertex in vertices]) / len(vertices)
	centroid = [average_x, average_y]

	<!DOCTYPE html>
	<html>
	<head>
	<title>Sand</title>
	<meta charset="utf-8">
	<link rel="icon" href="data:;base64,iVBORw0KGgo=">
	<script type="text/javascript">
	const SAND = 0xEF \| 0xDD << 8 \| 0x6F << 16 \| 0xFF << 24;
	const WATER = 0x1C \| 0xA3 << 8 \| 0xEC << 16 \| 0xFF << 24;
	let run = true;

	#include <stdio.h>
	#include <stdlib.h>
	#include <string.h>
	#include <stdbool.h>
	#include <ctype.h>

	#define MAX_LINE_LENGTH 4096 // Max line length for reading input (can be adjusted)
	#define INITIAL_CHILDREN_CAPACITY 4
	#define TAB_STOP_WIDTH 4