Prohibit showing videos in search results

Preserve the indexes
If you don't want your videos to be played in the video search results, add the ya:ovs:allow_embed element with the false value. The document will still remain in the video search indexes.
<meta property="og:video" content=""/>
<meta property="ya:ovs:allow_embed" content="false"/>
Without indexes
To prohibit indexing of the entire document as well as video playback in the search results, add the yandex-video element with the noindex value.
<meta property="og:video" content=""/>
<meta name="yandex-video" content="noindex"/>