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Ora et labora

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Ora et labora
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@hermanschaaf
hermanschaaf / adjust_video_speed.md
Last active April 9, 2023 01:17
Adjust Speed of a Video with ffmpeg

To increase speed of a video by a factor of 1.5x:

ffmpeg -i input.mp4 -filter_complex "[0:v]setpts=PTS/1.5[v];[0:a]atempo=1.5[a]" -map "[v]" -map "[a]" output.mp4

We can use this to adjust the speed of all the videos in a directory (Linux and macOS only):

mkdir -p output
@bertrandmartel
bertrandmartel / aggregation_lookup.md
Last active December 22, 2023 13:32
MongoDB $lookup aggregation example

MongoDB $lookup aggregation

SO link

db.votes.aggregate([{
    $lookup: {
        from: "users",
        localField: "createdBy",
        foreignField: "_id",
@vitorbaptista
vitorbaptista / Makefile
Last active August 29, 2015 14:08
Gera CSV com parlamentares eleitos a partir dos dados do TSE
# Baixa resultados do TSE desde 1989 e cria um CSV com os parlamentares eleitos com colunas:
# ano, uf, nome, cargo, situação, partido
ANOS_UF := 1989 1990
ANOS_MUNZONA := 1994 1996 1998 2000 2002 2004 2006 2008 2010 2012 2014
ARQUIVOS_UF := $(patsubst %, VOTACAO_CANDIDATO_UF_%.ZIP, $(ANOS_UF))
ARQUIVOS_MUNZONA := $(patsubst %, votacao_candidato_munzona_%.zip, $(ANOS_MUNZONA))
ARQUIVOS_MUNZONA_DEPENDENCIES := $(patsubst %, votacao_candidato_munzona_%_SP.txt, $(ANOS_MUNZONA))
ARQUIVOS_UF_DEPENDENCIES := $(patsubst %, VOTACAO_CANDIDATO_UF_%, $(ANOS_UF))
@akost
akost / convert.sh
Created April 4, 2012 19:06
Bash script for recursive file convertion windows-1251 --> utf-8
#!/bin/bash
# Recursive file convertion windows-1251 --> utf-8
# Place this file in the root of your site, add execute permission and run
# Converts *.php, *.html, *.css, *.js files.
# To add file type by extension, e.g. *.cgi, add '-o -name "*.cgi"' to the find command
find ./ -name "*.php" -o -name "*.html" -o -name "*.css" -o -name "*.js" -type f |
while read file
do