The following video stats are excerpted from a report on Reel SEO*
#1 YouTube: YouTube is still the absolute best place to search for video content. Nothing to see here, let’s move along. Except to say that there are many tips and tricks you can use to dive deeper into YouTube’s search results to find the exact content you are looking for.
#2 Google: I might as well have just included this with YouTube since Google tends to serve YouTube results for video first and foremost. But the fact of the matter is you get distinctly different results when searching video on YouTube versus Google, so its worth using both to find the video you are looking for. Oh, and YouTube results now appearing on Google Trends so that’s a handy tool to check out too.
#3 Yahoo Screen: Originally called Yahoo Video, this video search engine was renamed Yahoo Screen in 2011 and works with a Yahoo account to customize options. The viewing experience is consistent across all video content, with the Yahoo menu displayed across the top of the page and video options/categories displayed along the left hand side of the page. Video is the main focus on this site, with either your video selection or a suggestion from Yahoo being prominently displayed on the page. Aside from the video categories, there is a standard search box at the top of the page to look for the right footage. Yahoo video does not allow user generated content, a feature that was removed in 2010. All user generated content was removed from the site in 2011. Yahoo has struck deals with various video producers to fill out the site, which uses its own video as the primary source for content.
#4 Bing Video: Unlink Yahoo, Bing video uses the internet at large in its searches. That leads to a very interesting search based experience that includes YouTube, Yahoo, Vimeo and just about any other video hosting site. Whether you use the search box at the top or click on a suggested category or video, the page populates with a never-ending search results page. If there is a primary video in the results, it appears as slightly larger than the rest of the videos in the results. Search results can be hovered over to get an actual playing preview of the content with audio and once a result is clicked you are taken to a video player that includes both related searches and videos to further help you in your search.
#5 AOL Video: If you search for video using the bar at the top, the results are very similar to a traditional Web search. But if you scroll to the bottom of the page, past the top picks and featured partners, the SEARCH AOL On box provides a very powerful search tool. Much like Bing it searches many video hosting sites and displays the results. One unique thing about AOL On is that it plays the video in the AOL player, using the video from the hosting site as the source. The site also has browsing capabilities for the top picks and featured partners as well as a handful of channels that sort content based on common themes like tech or pets.
*Source: Top Video Search Engines and Video Search Sites 2015 http://www.reelseo.com/