FFmpeg
https://ffmpeg.org/
Step-by-step installation guide
1. Start by creating a dedicated folder for FFmpeg. e.g. C:\ffmpeg
2. Download FFmpeg and extract the files
3. Copy the 3 files from bin folder and copy in "C:\ffmpeg".
4. Delete the 7zip file and extracted folder.
5. Copy the folder path where you kept the 3 executable files.
6. Click on start and type System Variables
7. Click on Edit the System environment variables
8. Click on Environment variables located at bottom-right
9. Under User variables double-click on Path. If you do not see Path refer #9a.
10. Double click on empty row and paste the path of folder where 3 executable files are located.
11. Press Ok
12. Open Command prompt and enter
ffmpeg -version
13. It should show the installed ffmpeg version
9a. If you do not see Path variable press New
10a. Type Path in Variable name and paste the path of folder in Variable value.
11a. Press Ok.
12. Open Command prompt and enter
ffmpeg -version
13. It should show the installed ffmpeg version
NOTE: The 3 files referred as
ffmpeg.exe
ffplay.exe
ffprobe.exe