This would have downgraded the protected conservation status of the Ruahine Forest land to allow it to be flooded as part of the water storage scheme.
The video explores areas of the park showcasing some of the native species and habitats known to exist within the dam's footprint, including native bats, New Zealand falcon, and rare wetlands.
During the video the organisation states: "if Minister Maggie Barry succeeds in court, it could create a legal precedent that lets over a million hectares of conservation land in New Zealand be traded away and destroyed by business interests."
Yesterday the minister said she had no comment to make.
HBRIC is the investment arm of the Hawke's Bay Regional Council, who have placed a moratorium on the scheme until a review can be completed. This does not impact court proceedings under way for HBRIC.
In response to the video, HBRIC acting chief executive Blair O'Keeffe said the matter being disputed at the Supreme Court was a technical interpretation of the existing law, best dealt with by the court.
He said the video omitted to note there was a proposed exchange which would add 170ha of land with enhanced conservation values to the Ruahine Forest Park.
"The enhanced conservation value is not being disputed," he said.
Forest & Bird chief executive Kevin Hague said this case was about more than Ruahine Forest Park and what would be New Zealand's largest irrigation dam.
"It's about all of New Zealand's specially protected conservation areas, and whether they're safe from commercial interests."
He questioned if the Government had the right to exchange parts of conservation land, which would then be destroyed.
"The outcome of this case will determine whether specially protected public land can be obtained and destroyed by private businesses, or whether that land belongs to the people of New Zealand, and to the environment."
The Supreme Court hearings are set for February 27 and 28.