For files that won't play on devices like smart TVs, tools like or FFmpeg are frequently recommended by community experts to re-wrap or re-encode the video into a standard MP4 format.

: A versatile "wrapper" that can hold multiple video, audio, and subtitle tracks in one file.

: In DW Spectrum software, MKV and MP4 files are often handled as a single record within the interface, making it easier to manage multi-video exports. Container Differences :