You can download the FFmpeg here as a video encoder for your codecs. There are a few of these such as the myFFmpeg, SmartFFmpeg, FFmpegGUI as well. Each of these are different. The FFmpeg you can download below and then install this on your computer. See below what this is as well as how to use this. See other video encoders as well on here.
Download the MediaInfo Lite here. This is a free and open-source software tool that is used to analyze and display information about media files. It can be used to view detailed information about a wide range of media formats, including video files (such as AVI, MP4, and MKV), audio files (such as MP3 and WAV), and image files (such as JPEG and PNG).