Thanks Steven, I may take a look at doing that if I get a chance.
Actually, I was able to find another plugin that handled this for us, although it’d still be a really nice feature to have built in.
For those that might find it helpful, this plugin works well to handle the featured image automatically:
https://ww.wp.xz.cn/plugins/video-thumbnails/
In the settings, add the ‘sermons’ type to those post types that will be processed and also mention the custom field (_ctc_sermon_video) in the configuration. Going forward, if you update/save a sermon and have not manually set a featured image, it will pull it from the youtube link provided. Another really nice feature is that the plugin has a “bulk update” capability as well. This will let it scan all existing sermons and pull the image in without you having to do each one manually. A word of caution: this does take some time depending on how many sermons you have already. I’d suggest setting the plugin to ONLY handle sermon posts before doing a bulk scan and then resetting to anything else you’d like supported after the scan completes.