The video contains the explicit visuals of the sexual assault of the actress on a moving car that was waylaid by gangsters on February 17, 2017.
The investigating officers hope to prove Dileep's link to prime accused Pulsar Suni based on director Balachandrakumar's statement.
The court dismissed his plea for regular bail, saying it cannot be granted at this stage.
In his statement to the police, Dasan said he heard Dileep's brother-in-law TN Suraj talking about the murder plot to someone over the phone.
The ex-employee informed Crime Branch that he had witnessed Dileep's brother Anoop threatening to deal with Pulsar Suni once he leaves jail.
The accused in the 2017 actor assault case was quizzed on recent revelations made by Balachandrakumar.
Senior advocate Jaideep Gupta, representing the Kerala government, sought 6 months more time, as the existing deadline to complete the trial is February 16.
The Kerala High Court will hear on Saturday the anticipatory bail plea filed by actor Dileep in a case registered against him and five others for allegedly threatening investigation officer.
Suni was engaged in a telephonic conversation with a witness in the case, Jinson.
The video was improved in a studio as the sound quality of original record was very low.