A recently-shot video due to be distributed later on Monday shows the dire situation facing thousands of people who are fleeing crisis-hit Venezuela, the UN World Food Programme (WFP) said in a statement.
WFP is providing emergency food assistance - hot meals, food vouchers, and school meals - to vulnerable migrants, especially women and children, in four Colombian departments, and is providing food vouchers for migrants on Ecuador's border with Colombia, said the agency.
The video's release comes as world leaders attending the UN General Assembly in New York are due to discuss the thousands of people who are continuing to leave Venezuela in what has become a regional migrant crisis, WFP said.
Venezuela's socialist government blames the economic crisis on an international boycott led by the US.
A total of 2.3 million people left Venezuela between 2014 and June this year according to the UN.