  YouTube, a world-famous video sharing website, maintains a list of the top
trending videos on the platform. Due to its huge amount of users, it enables
researchers to understand people's preference by analyzing the trending videos.
Trending videos vary from country to country. By analyzing such differences and
changes, we can tell how users' preferences differ over locations. Previous
work focuses on analyzing such culture preferences from videos' metadata, while
the culture information hidden within the visual content has not been
discovered. In this study, we explore culture preferences among countries using
the thumbnails of YouTube trending videos. We first process the thumbnail
images of the videos using object detectors. The collected object information
is then used for various statistical analysis. In particular, we examine the
data from three perspectives: geographical locations, video genres and users'
reactions. Experimental results indicate that the users from similar cultures
shares interests in watching similar videos on YouTube. Our study demonstrates
that discovering the culture preference through the thumbnails can be an
effective mechanism for video social media analysis.
