These days, most people said the trend is a video. Starting with YouTube, not only high-definition video but also real-time broadcasting has become common. This trend seems to be similar on the web. Sites with video backgrounds are emerging as a trend these days.
Like the previous article(28 Gorgeous, Free Stock Photo Sites), I collected some sites again. Excluding those with tight licenses, I have only selected 6. But I recommend that you should check the licenses once more before using them.
If you can’t find suitable videos from the above sites, you may check the All the free stock too.