Jacob Chapman chapmanjacobd

Notes on using FFMPEG and FFPROBE

Get the reported and actual number of frames in a video.

Note: I recently found a video that reported having 2985 frames, but actually only had 29 frames, which were all keyframes.

Install/copy:

Run keybinds.ahk with autohotkey, Win+Enter spawns new terminal.

	#!/bin/bash

	# set -x

	print_usage() {
	echo "$0 [--map=0:3] video_file" >&2
	echo "" >&2
	echo "With video_file the path to a file like mkv which embeds the subtitles" >&2
	echo "--map: use the specified embedded subtitle." >&2
	echo "" >&2

	// decrypting Amtrak's real-time train location geoJSON feed
	// based on https://github.com/Vivalize/Amtrak-Train-Stats
	const fetch = require('node-fetch');
	const CryptoJS = require('crypto-js');

	// this is the xhr call done by https://www.amtrak.com/track-your-train.html containing encrypted train location data
	const dataUrl = 'https://maps.amtrak.com/services/MapDataService/trains/getTrainsData';

	// these constants are pulled from RoutesList.v.json, which is an object with keys 'arr', 's', and 'v'
	const sValue = '9a3686ac'; // found at s[8]

	#!/bin/bash

	IN=$1
	OUT=$2

	true ${SD_PARAMS:="-55dB:d=0.3"};
	true ${MIN_FRAGMENT_DURATION:="20"};
	export MIN_FRAGMENT_DURATION

	if [ -z "$OUT" ]; then

	Leave a comment with the name of an application (or multiple) that replaces a function typically done with a modern web browser.
	I.E. an application that allows YouTube to be watched without a browser.