Google's "Collections" feature for video search was not a widely known or documented feature. Google frequently updates its search algorithms and features, so it's possible that something new has been introduced since then.
However, I can provide some general tips for optimizing video content for search on Google, which may indirectly improve visibility in any new or existing features like Collections:
Quality Content: Create high-quality videos that are relevant, engaging, and informative. Google prioritizes content that provides value to users.
Keywords: Research and include relevant keywords in your video titles, descriptions, and tags. Use tools like Google Keyword Planner or YouTube's own search bar to identify popular search terms related to your content.
Metadata Optimization: Optimize your video's metadata, including titles, descriptions, and tags, with relevant keywords. This helps Google understand the context of your video content.
Transcripts and Closed Captions: Provide accurate transcripts and closed captions for your videos. This not only improves accessibility but also helps search engines index your content more effectively.
Thumbnail Optimization: Create compelling and descriptive thumbnails that accurately represent your video's content. This can improve click-through rates in search results.
Engagement Metrics: Encourage user engagement with your videos through likes, comments, shares, and subscriptions. Higher engagement signals to Google that your content is valuable and relevant.
Schema Markup: Implement video schema markup on your website to provide search engines with additional context about your videos, such as duration, description, thumbnail URL, and more.
Promotion and Distribution: Promote your videos across various platforms, including social media, forums, and communities relevant to your niche. Increased visibility and backlinks can improve your video's ranking in search results.
Optimized Landing Pages: If your videos are hosted on your website, ensure that the landing pages are optimized for search engines with relevant metadata, descriptive content, and proper indexing.
Regular Updates: Keep your video content fresh and relevant by regularly updating and adding new videos. This signals to search engines that your content is current and valuable to users.
While these strategies may not specifically target Google's "Collections" feature (if it exists or has evolved since my last update), they can help improve the overall visibility and searchability of your video content on Google. Keep an eye on updates from Google and adapt your strategies accordingly to leverage any new features or changes in the search landscape.