Google has published some new and updated resources around video SEO. First, there is a new video, lighting talk, on the topic of video SEO best practices by Danielle Marshak, Product Manager at Google. Second, there is an updated help doc section on video SEO best practices.

For those doing video SEO, I don’t think you will find anything new here but it is always good to double check your knowledge. So I will sum it up for you below.

The video by Danielle Marshak explains these concepts:

How Google Indexes Videos:
Video HTML Tags
Structured Markup
Video Sitemaps

Signals:
Text On The Page
Links To The Video
Structured Data Markup
Video Content Files

Videos Appears On:
Web Search: Google shows videos in web search video carousel box when the video is the main piece of content on the webpage. Google may also show videos from webpages that have mixed content and videos in the news box, top stories, and other elements.
Video Search Tab
Image Search Tab
Google Discover

Video Best Practices
Make your videos on the web publicly on a web page
Provide structured data with VideoObject markup
Include high quality thumbnail to Google
Submit a video sitemap
Make video content files accessible (do not block Google)

Here is the video:

The updated help docs go into these areas:
Help Google find your videos
Ensure your videos can be indexed
Allow Google to fetch your video content files
Enable specific video features
Remove, restrict, or update your videos as needed

Forum discussion at Twitter.