khripunovpp

1. Install ffmpeg:
brew install ffmpeg --with-vpx --with-vorbis --with-libvorbis --with-vpx --with-vorbis --with-theora --with-libogg --with-libvorbis --with-gpl --with-version3 --with-nonfree --with-postproc --with-libaacplus --with-libass --with-libcelt --with-libfaac --with-libfdk-aac --with-libfreetype --with-libmp3lame --with-libopencore-amrnb --with-libopencore-amrwb --with-libopenjpeg --with-openssl --with-libopus --with-libschroedinger --with-libspeex --with-libtheora --with-libvo-aacenc --with-libvorbis --with-libvpx --with-libx264 --with-libxvid

2. Convert:
ffmpeg -i input-file.mp4 -c:v libvpx -crf 10 -b:v 1M -c:a libvorbis output-file.webm

khripunovpp

1. Open the CF7 contact form which you want to edit in wordpress Admin area. You set up the [checkbox] snippet which produces the checkbox in the contact form on your website:
[checkbox contact_sendmail "Send me a copy of this message"]

2. Activate Mail(2)


3. Add to functions.php
function check_mail_send_contactform($cf7)
{
    $submission = WPCF7_Submission::get_instance();

khripunovpp

/**
 * Stop an iframe or HTML5 <video> from playing
 * @param  {Element} element The element that contains the video
 */
    var stopVideo = function ( element ) {
    element.querySelectorAll('iframe').forEach(function(item) {
        if ( iframe.contentWindow ) { /* send stop to content */
            stopVideo(iframe.contentWindow.document);
        }
        else { /* Cross Domain, resetting src is all we can do, and the iframe might fail loading same url */