How to Watch Local Video Files on Your Roku.
Anyway, Roku 4 also offers USB port for personal media expansion. Users can enjoy their media files in MP4 (H.264), MKV (H.264), HEVC (H.265). The Roku 4 can even support 4K UHD 60 fps HEVC Playback via USB. Roku 4 has strict requirements for playback personal video via its built-in Roku Media Player.
The Roku media player allows you to find, browse, and play content from media servers on your local network as well as USB (on those Roku players with a USB port). It supports such media servers as Twonky, Windows Media Player, Plex, and Tversity.
But if you are a Roku user, there’s good news: you can plug in an external drive, and this popup will appear. This will open the Roku Media Player, from which you can browse your drive and open any video, music, or photo files you have on it. It’s quick, and it works—even if the interface isn’t perfect. Sometimes that’s all you need.
These Roku models are compatible and will allow you to install the Plex channel. They’re less powerful than newer models, which means that you may experience lower performance (particularly with app navigation). Roku 1 (model 2710) Roku 2 (model 2720) Roku 2 HD (model 3000) Roku 2 XD (model 3050) Roku 2 XS (model 3100) Roku LT (models 2400.
Roku Supported and Unsupported Video Formats. The Roku Media Player channel enables you to play back personal video, music and photo files from a DLNA server on your local network or a USB drive attached to a USB equipped Roku. The following media file formats are Roku supported: Video — MKV (H.264), MP4 (H.264), MOV.
The Roku media player allows you to find, browse, and play content from media servers on your local network as well as USB (on those Roku players with a USB port such as Roku 4, 3 and new Roku 2). From Roku's official page, we can find that MKV files is listed in Roku media player channel supported file formats, however, still a lot of fail to have audio issues when playing MKV on Roku with.
Quick Look: The MyMedia app from PlayOn lets you stream videos, photos, and music from a desktop or laptop computer to a Roku-connected TV. What sets this Roku app apart from several others is that it will convert media to a Roku-compatible format if necessary. As with other computer-to-Roku streaming media apps, the computer and the Roku device must be on the same WiFi or LAN network.