Wolfgang Teuber wteuber

Audio Volume Manipulation

ffmpeg -i input.mp4 -af "volume=<volume_level>" output.mp4

input.mp4: The input video file.
-af: Stands for audio filter. This option tells FFmpeg to apply an audio filter.

An error occurred while installing eventmachine (1.2.7), and Bundler cannot continue.
Make sure that `gem install eventmachine -v '1.2.7' --source 'https://rubygems.org/'` succeeds before bundling.

In Gemfile:
  github-pages was resolved to 228, which depends on
    jekyll-avatar was resolved to 0.7.0, which depends on
      jekyll was resolved to 3.9.3, which depends on
        em-websocket was resolved to 0.5.3, which depends on
 eventmachine

[ -z "\2" ] &&  /Applications/IntelliJ\ IDEA.app/Contents/MacOS/idea \1 || /Applications/IntelliJ\ IDEA.app/Contents/MacOS/idea --line \2  \1

	SELECT
	table_name AS `Table`,
	table_rows AS `Row Count`,
	ROUND(data_length + index_length) AS `Size (Bytes)`,
	CASE
	WHEN data_length + index_length < 1024 THEN CONCAT(ROUND((data_length + index_length), 2), ' B')
	WHEN data_length + index_length < 1024 * 1024 THEN CONCAT(ROUND((data_length + index_length) / 1024, 2), ' KB')
	WHEN data_length + index_length < 1024 * 1024 * 1024 THEN CONCAT(ROUND((data_length + index_length) / 1024 / 1024, 2), ' MB')
	WHEN data_length + index_length < 1024 * 1024 * 1024 * 1024 THEN CONCAT(ROUND((data_length + index_length) / 1024 / 1024 / 1024, 2), ' GB')
	ELSE CONCAT(ROUND((data_length + index_length) / 1024 / 1024 / 1024 / 1024, 2), ' TB')

	#reduce PDF size
	#-dPDFSETTINGS
	# /screen
	# /ebook
	# /printer
	# /prepress

	gs -dNOPAUSE -dBATCH -sDEVICE=pdfwrite -dCompatibilityLevel=1.4 -dPDFSETTINGS=/printer -sOutputFile=out.pdf in.pdf

	# Print origin/HEAD branch name (default branch)
	gdb() {
	git remote show origin \| grep 'HEAD branch' \| cut -d ' ' -f5
	}

	# Print origin/HEAD branch name (default branch)
	# uses ohmyzsh git plugin aliases https://github.com/ohmyzsh/ohmyzsh/blob/master/plugins/git/git.plugin.zsh
	gcdb() {
	gco `gdb`
	}

	export PAGER="cat"
	git --no-pager log -S'search_term' --source --all --pretty=format:'%H' \| xargs -I {} gh pr list --search "{}" --state merged --json url -q '.[].url' \| sort -u

	# install and set up gh (https://cli.github.com/)
	GH_USER=`gh auth status \| grep -oue "Logged in to github.com as [^ ]" \| grep -oue "[^ ]$"`
	gh gist list -L1000 \| sed -e "s/^/https:\/\/gist.github.com\/$GH_USER\//"