1. An advertising system with dynamic ad creative localization for improved localization of an ad campaign with respect to a user of a device, comprising: a storage medium to store one or more software programs of an ad server; processing logic of the ad server coupled to the storage medium, the processing logic to execute instructions of the one or more software programs of the ad server; and a dynamic ad creative localization unit of the ad server coupled to the processing logic, the dynamic ad creative localization unit is configured to receive an ad campaign including at least one video ad from the ad server, to apply filters to the ad campaign based on device characteristics, geographical data for the device, and a language of the device of the user in order to select an ad payload including a video ad of the ad campaign, to determine a language for the device of the user, and to localize any text in the ad campaign including the at least video ad based on the language of the device.