The .wmv container was introduced by Microsoft in the early 2000s. Its maximum practical resolution was 1080p, but most pirated or amateur content labeled "extra quality" during the 2005–2012 era was actually:
If you are looking for academic research regarding the structure or performance of political parties in the Czech Republic (often categorized in parts or chapters in scholarly work), the following papers are highly relevant: czechparties5part6wmv extra quality