Question: I'm looking for a customizable video player that's optimized for mobile devices and fast loading.

If you want a customizable video player that's designed for mobile devices and that loads fast, EX.CO is a strong contender. The company is geared for publishers looking to squeeze as much revenue as possible out of video, with an AI-powered yield engine to optimize revenue and interactive elements to encourage engagement. Its mobile-optimized video player is lightweight and customizable, and it offers tools to create and manage video content, including dynamic contextual playlists and real-time analytics.

Another contender is Vimeo, an all-purpose video platform that offers full-featured video hosting and player customization. Vimeo offers advanced analytics to understand viewer behavior and robust security and compliance features. It's geared for creative pros, corporate communications and learning and development teams, so it's a good option if you have different needs for different parts of your business.

If you want to add engaging and customizable videos to your website, Koosh offers a service that requires no programming or design expertise. With mobile-responsive templates, smart video loading and real-time analytics, Koosh can boost user engagement and conversion rates on your existing website.

Last, Clipara offers a video platform for modern brands to captivate customers with short-form video content. It lets you create customizable multi-video experiences without sacrificing page load speed and offers features like interactive video embeds and mobile-first experiences. Clipara analytics help you fine-tune video content for better engagement and conversions.