gyk

Plots.jl/Makie.jl depends on FFmpeg for animation and other fancy features. Judging from the sizes of downloaded artifacts, FFmpeg is no light dependency and possibly takes a long time to install on a poor Internet connection.

 11M  artifacts/6b04ad7f71b1a29adad801f4fdd0d34b3535c638  OpenSSL_jll
1.2M  artifacts/8e4e002b058fdc78ba423fc2a8725d995c8ea9cd  libfdk_aac_jll
4.9M  artifacts/98a8bafb73ec75070d808b170e6aedbfc2ccf474  x264_jll
6.5M  artifacts/9cc8e706ab205ec16daa22d5f4a70711d5ff7885  x265_jll
792K  artifacts/e76f7afca0a2695352d27f767b750e6d997fa6d4  Bzip2_jll

gyk

{
    "Attribute using recommended pattern": {
        "prefix": "attribute",
        "body": [
            "[System.AttributeUsage(System.AttributeTargets.${1:All}, Inherited = ${2:false}, AllowMultiple = ${3:true})]",
            "sealed class ${4:My}Attribute : System.Attribute",
            "{",
            "    // See the attribute guidelines at",
            "    //  http://go.microsoft.com/fwlink/?LinkId=85236",
            "    readonly string positionalString;",

gyk

Decipher the stupid code posted by this script kiddie on Hacker News (his posts have been downvoted badly).

gyk

/* Analyzes chunks to find max interleave length
 * sets flat flag if no interleaving is in use */
static void MP4_GetInterleaving( demux_t *p_demux, vlc_tick_t *pi_max_contiguous, bool *pb_flat )
{
    demux_sys_t *p_sys = p_demux->p_sys;
    *pi_max_contiguous = 0;
    *pb_flat = true;

    /* Find first recorded chunk */
    mp4_track_t *tk = NULL;

gyk

z = a x + b y + c x y + d

x = 0, z = 1    =>    b y + d === 1
x = 1, z = y    =>    a + b y + c y + d === y

b y + d === 1    =>    b == 0, d == 1
a + c y === y - 1    =>    c == 1, a = -1    =>    z = -x + x y + 1    =>    z = 1 + x * (y - 1)

gyk

FFmpeg Minimal Build for RTMP Streaming

This tutorial will work you through steps of configuring an FFmpeg build tailored for RTMP streaming on macOS. At first I think of making it support general live streaming, with additional protocols like HLS, but to keep things simple let's stick with RTMP for now. (Anyway, I do include HLS in the protocol list as well as some related bitstream filters but it's untested.)

Goal

The built FFmpeg executable should

gyk

/// Annotations start with a `///`, just like this line.

/// In `rtmp_open` function:
///
///     rt->state = STATE_START;
///     if (!rt->listen && (ret = rtmp_handshake(s, rt)) < 0)
///         goto fail;
///     if (rt->listen && (ret = rtmp_server_handshake(s, rt)) < 0)
///         goto fail;
///

gyk

"Measure Kafka consumer group throughput via Burrow API"

import json
import urllib2
import time

import sys
import argparse

BURROW_CONSUMER_GROUP_TEMPLATE = 'http://{host}:{port}/v2/kafka/DC/consumer/{consumer}/topic/{topic}'

gyk

It's a pita.

gyk

function runGui()

	chosenFile = '';
	defScalingStr = {'2.0', '3.0', '4.0'};

	function btnLoad_click(hObj, event)
		[fileName, pathName] = uigetfile({ ...
			'*.bmp; *.png', 'Image Files (*.bmp,*.png)'; ...
			'*.*', 'All Files (*.*)'}, ...
			'Select an image');