audio/images/video: added mediainfo

wiki/audio.md

@@ -149,3 +149,13 @@ MuseScore is free and open-source and is cross-platform.
 On [Linux based systems](/wiki/linux.md) it is available on most distributions via the `musescore`
 package or their [website](https://musescore.org/download) and can be run with the command `mscore`.
 For Windows visit the [download section of the MuseScore website](https://musescore.org/download).
+
+### Getting Metadata
+
+Using [MediaInfo](https://github.com/MediaArea/MediaInfo) metadata of a file can be obtained.
+A command for this looks like the following.
+In this the file to obtain metadata to is assumed to be `audio.flac`.
+
+```sh
+mediainfo audio.flac
+```

wiki/images.md

@@ -15,3 +15,13 @@ A popular cross-platform program for this is [GIMP](https://www.gimp.org/).
 
 Another part of image manipulation is the upscaling of low resolution images.
 This can be done by the cross-platform program [upscayl](https://github.com/upscayl/upscayl).
+
+### Getting Metadata
+
+Using [MediaInfo](https://github.com/MediaArea/MediaInfo) metadata of a file can be obtained.
+A command for this looks like the following.
+In this the file to obtain metadata to is assumed to be `image.png`.
+
+```sh
+mediainfo image.png
+```

wiki/video.md

@@ -169,3 +169,13 @@ shows
         ├── series_(2010)_s02e01-dvd_un.mkv
         └── series_(2010)_s02e02-dvd_un.mkv
 ```
+
+### Getting Metadata
+
+Using [MediaInfo](https://github.com/MediaArea/MediaInfo) metadata of a file can be obtained.
+A command for this looks like the following.
+In this the file to obtain metadata to is assumed to be `video.mkv`.
+
+```sh
+mediainfo video.mkv
+```