Nowadays most high definition content is in MKV format. However a lot of devices don't support this container. Instead they support the MP4 format. In this guide I will show you how to convert your MKV video files to MP4 and hardcode subtitles. For this guide I will use VidCoder. VidCoder is a DVD/Blu-ray ripping and video transcoding freeware application for Windows. It uses HandBrake as its encoding engine. Therefore apart from MKV you can convert any AVI/DVD/Blu-ray files into MKV or MP4. Download VidCoder and let's get started with the tutorial.