The two neighbors have fought sporadically for two years over their poorly marked border.
The Cambodian authorities have banned a public screening of the film, calling it illegal.
Cambodia says its government wants the court to interpret the 1962 decision that gave Preah Vihear to Cambodia.
Sam Rainsy claims the government is ignoring the Paris peace agreement, which ensures Cambodia’s territorial sovereignty.
The commanders met at the O’smach border checkpoint following the seventh straight day of fighting that has killed at least 14 people.
At least eight hydroelectric dams have been proposed on the upper Mekong River.
The proposed March comes as workers face increasing pressure from food and fuel prices, while salaries remain low.
Each side blames the other for the breakdown and clashes that have killed 14 people since Friday, including at least one civilian.
For two days, from April 29, researchers, experts and enthusiasts will gather in Athens, Ohio, to share their thoughts and findings.
“In order for a country to be both economically and politically strong and powerful, youths' human resources are needed", said a caller.
This week’s fighting has displaced more than 23,000 Cambodians in Oddar Meanchey province.
The US watchdog Freedom House ranked Cambodia “not free” for 2010, for persecution of and restrictions on journalists.