You might try https://postieplugin.com/downloads/fix-video-links/
But ultimately it.may depend on your theme.
I fixed it with with a small Java script, thnx anyway!
Nice solution. Can you share for others?
Of course, we are here to help each other. This script is written based on the Vimeo platform!
<script>
function adjustIframe() {
var vimeoIframe = document.querySelector('iframe[src*="vimeo.com"]');
if (vimeoIframe) {
vimeoIframe.style.width = '100%';
var aspectRatio = vimeoIframe.height / vimeoIframe.width;
vimeoIframe.style.height = (vimeoIframe.offsetWidth * aspectRatio) + 'px';
}
}
window.addEventListener('load', adjustIframe);
window.addEventListener('resize', adjustIframe);
</script>