PopCast

Backed up by strong marketing campaigns, small devices like Chromecast and Apple TV are becoming more and more popular, as they enable you to play a wide array of high-quality audio and video content on your TV.
Because both Chromecast and Apple TV are not very versatile in terms of supported formats, AVI and MKV video files included, you probably need to convert most of your video files before you can actually play them. If you find this process to be both counterproductive and time-consuming, then you can try a software solution like PopCast.

Forget all about converting your video files and play them directly on Chromecast or Apple TV

PopCast is a simplistic but efficient piece of software designed to make it very easy for you to play MKV and AVI files on your Chromecast and Apple TV devices without actually needing to convert them.
You should also know that the utility comes with support for other popular video formats such as MP4, WMW, FLV, WebM, MOV, MPEG and OGG, just to name a few.

User-friendly interface and straightforward workflow

Subsequent to its installation, you are greeted by a simplistic main window, with a black-themed interface that is clearly designed for ease of access before anything else.
You get a clutter-free environment for playing your videos and only the basic elements found on a video player. Via the control pad, you can play, pause or stop the videos, as well as sequentially skip through them.
Seeing how simple PopCast's layout is, there is no surprise that working with the app is a straightforward and easy process. You only need to select the device you want to play your videos on, load the files to your playlist and that is about it.

Play a wide array of video formats on your Chromecast and Apple TV devices

Sure, the application is not what you would call feature-rich and support for different types of subtitles or a built-in collection of themes would have made the it even better. Furthermore, an equalizer and other advanced video and audio options would be more than welcomed.
Nonetheless, PopCast is an efficient and simple app that enables you to play MKV, AVI and other types of video files by streaming them to your Chromecast or Apple TV devices, nothing more, nothing less.