If you have troubles since the update to WordPress 4.5 please read this post before opening a new thread.
Is there a way to get a thumbnail for a post that has a external video linked. I have tried uploading an image and setting it as featured though the media panel. That process works fine for posts without the youtube video. Adding a second item under the slideshow did not work either.
I’m sorry but a fallback image is not supported at the moment. However if you’re familiar with css you can modify the widget class and include a fallback image or function with fetches additional featured images. The code can be found in propulsionframeworkphpclass-framework-widgets.php :
$slides = avia_post_meta(get_the_ID(), 'slideshow');
if( $slides != "" && !empty( $slides['slideshow_image'] ) )
$image = avia_image_by_id($slides['slideshow_image'], 'widget', 'image');
kills the featured image disallowing a fallback for the video file. I commented out this line, and I can now set a featured image so a thumbnail will appear when I’m using a video in the slideshow.
This does not appear to have adverse repercussions.
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