Media Source Extensions
50 websites

Media Source Extensions is free to use

https://www.w3.org/Icons/w3c_home

Media Source Extensions (MSE) is a W3C specification that allows JavaScript to send byte streams to media codecs within web browsers that support HTML5 video. Among other possible uses, this allows the implementation of client-side prefetch...

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StreamRail
44 websites

StreamRail offers both free and paid options

https://www.streamrail.com/

Video player for Ad Networks built to maximize yield

Market Share by Top Websites

2 In terms of market share, Media Source Extensions is clearly lagging behind, losing to StreamRail in all segments.

Websites Categories

1 StreamRail has better usage coverage in more websites categories. Including Pets & Animals, News & Media, Arts & Entertainment, Health and 4 other categories.

2 Media Source Extensions is leading in Computers Electronics & Technology, Jobs & Career, Lifestyle and Sports.

Geography

1 Media Source Extensions is leading in most countries, including China, United States, South Korea, Germany and 15 other countries.

2 StreamRail is leading in Italy, Israel, Lithuania and Yemen.