Campaign

1) How to create Custom Filters ?
Go in Structure > Taxonomy > Campaigns properties, then write and save your filters.

2) How to make a Campaign listing?
Go in Content > Add content > Listing page, fill the fields and set the "List type" option on "Campaign listing".
Then you can add Custom Filters, you can check them all if you planned to have only one Campaign page which will regroup all of your campaigns. However if you want to have several Campaign pages, one for each theme or topic for example, each time you create a Campaign page just check the Custom Filters you want your page to show.
 

3) How to make a Campaign ?
First go in Content > Add content > Campaign, then add your campaign related videos and pictures, they will automatically adjust in order to fit the design well.
Also if you want some text, context or explications related to your campaign, you can add a related news. 

Visuals of the campaign can be downloaded.

4) Campaign's teaser
There's a 600 characters limit to the teaser so use it as a brief summary of your campaign. If it's not enough you  can link a related news. It's more like a showcase of your campaign.
Try adding an embed video and various pictures of different formats, it will automatically displays elegantly.