You can listen to the cta:show event to get notified when a CTA is shown.
cta:show
player.on('cta:show', (cta) => { console.log('CTA is shown', cta); });
You can track when a CTA is clicked using cta:click event.
cta:click
player.on('cta:click', (cta) => { console.log('CTA is clicked', cta); });
If you want to do something when a CTA is hidden, you can listen to the cta:hide event.
cta:hide
player.on('cta:hide', (cta) => { console.log('CTA is hidden', cta); });