README.md in format_parser-0.20.1 vs README.md in format_parser-0.21.0

@@ -29,10 +29,11 @@
 * MP4
 * M4A
 * ZIP
 * DOCX, PPTX, XLSX
 * OGG
+* MPEG, MPG
 
 ...with [more](https://github.com/WeTransfer/format_parser/issues?q=is%3Aissue+is%3Aopen+label%3Aformats) on the way!
 
 ## Basic usage
 
@@ -170,9 +171,13 @@
 ### ZIP
 - The .zip fixture files have been created by the project maintainers
 
 ### .docx
 - The .docx files were generated by the project maintainers
+
+### .mpg and .mpeg
+- The files (video 1 to 4) were downloaded from https://standaloneinstaller.com/blog/big-list-of-sample-videos-for-testers-124.html.
+- Video 5 was downloaded from https://archive.org/details/ligouHDR-HC1_sample1.
 
 ### JPEG examples of EXIF  orientation
 - Downloaded from Unspash (and thus freely avaliable) - https://unsplash.com/license and have then been
   manipulated using the [https://github.com/recurser/exif-orientation-examples](exif-orientation-examples)
   script.