The speaker in the video argued that the passports and the personal documents belong to the ISIS foreign operatives who are linked to Iran. He zooms in on passports of two Kazakhstan nationals, who visited Iran prior to arriving in Syria, and other personal documents.
The allegations with regard to the affiliation of these persons with ISIS or Iran are not corroborated. However, their visit to Iran and presence in Syria in time of civil war may raise questions about their motives.
Here are the pictures of the personal documents seized by one of the Syrian rebel factions in western rural area of Aleppo: