Ryan Richards rrichards

ffmpeg

Converting Audio into Different Formats / Sample Rates

Minimal example: transcode from MP3 to WMA:
ffmpeg -i input.mp3 output.wma

You can get the list of supported formats with:
ffmpeg -formats

Convert WAV to MP3, mix down to mono (use 1 audio channel), set bit rate to 64 kbps and sample rate to 22050 Hz:

Github Action with EC2 using SSH

Check this out on Dev.to

Configure SSH into aws ec2

How to handle SSH keys with ec2-github actions https://zellwk.com/blog/github-actions-deploy/

Declare these git secrets

SSH_PRIVATE_KEY
HOST_NAME / IP_ADDRESS

AWS EC2 Spot Instances for GitHub Self-hosted runners

Below CloudFormation stack which runs GitHub Self-hosted runners on EC2 Spot Instances managed by AutoScalingGroup. It automatically register new instances as self-hosted runners and removes them when Spot is interrupted.

How to use?

Download YML below into file
Create AWS CloudFormation stack
- Provide values for parameters

If you need to install smt in UserData fill stack parameter AdditionalUserData

enable https on your local environment

install mkcert and create certificates

brew install mkcert

mkcert -install

	.git
	.gitignore

	# Created by https://www.gitignore.io/api/git,ruby,rails,jetbrains+all
	# Edit at https://www.gitignore.io/?templates=git,ruby,rails,jetbrains+all

	### Git ###
	# Created by git for backups. To disable backups in Git:
	# $ git config --global mergetool.keepBackup false
	*.orig

	.git
	.gitignore

	# Created by https://www.gitignore.io/api/git,ruby,rails,jetbrains+all
	# Edit at https://www.gitignore.io/?templates=git,ruby,rails,jetbrains+all

	### Git ###
	# Created by git for backups. To disable backups in Git:
	# $ git config --global mergetool.keepBackup false
	*.orig

	FROM madnight/docker-alpine-wkhtmltopdf as wkhtmltopdf_savior

	# STAGE for bundle & yarn install
	FROM ruby:2.4.3-alpine3.7 as builder

	ENV CA_CERTS_PATH /etc/ssl/certs/
	ENV RAILS_ENV production
	ENV RAILS_LOG_TO_STDOUT true
	ENV RAILS_SERVE_STATIC_FILES true

	FROM ruby:2.7.1-slim AS base

	LABEL maintainer="Yann Defretin <[email protected]"

	# Common dependencies
	RUN apt-get update -qq \
	&& DEBIAN_FRONTEND=noninteractive apt-get install -yq \
	--no-install-recommends \
	build-essential=12.6 \
	gnupg2=2.2.12-1+deb10u1 \

	import logging
	import boto3
	from argparse import ArgumentParser, HelpFormatter
	from botocore.exceptions import ClientError, ProfileNotFound

	# logger config
	logger = logging.getLogger()
	logging.basicConfig(level=logging.INFO,
	format='%(message)s')

	# https://docs.docker.com/compose/yml/
	# Each service defined in docker-compose.yml must specify exactly one of
	# image or build. Other keys are optional, and are analogous to their
	# docker run command-line counterparts.
	#
	# As with docker run, options specified in the Dockerfile (e.g., CMD,
	# EXPOSE, VOLUME, ENV) are respected by default - you don't need to
	# specify them again in docker-compose.yml.
	#
	service_name: