The government censorship board will lift its ban on the documentary on Thai-Cambodia border conflicts if the dialogue in some scenes is muted, the film director said on Thursday.
Nontawat Numbenchapol, whose documentary Fah Tam Pan Din Soon or Boundary was stopped from being released commercially by the censorship board on Tuesday, said he was informed of the about-turn unofficially by phone.
According to him, the censorship board will lift the ban if he agrees to show some scenes without sound. One of the scenes is when a villager talked about His Majesty the King.
The five-member censorship panel, under the Ministry of Culture, said on Tuesday that the Thai-produced film could "persuade viewers to falsely believe" incorrect information, and was a threat to national security and international relations.
The film recounts the journey of an army private who took part in the military crackdown on protesters of the red-shirt United Front for Democracy against Dictatorship in 2010 before returning home to Si Sa Ket.
The film then shifts to a discussion about border spats between Thailand and Cambodia, featuring several interviews with residents on both sides.
The video clip below, uploaded by Mr Nontawat, shows excerpts from Boundary. The song played in the video is Lai Ton (ไหลถอน) by Jintara Poonlarp - the official soundtrack of the documentary.
"I made the film because I wanted to look at issues confronting our society, from the red-shirt and yellow-shirt problems to the Preah Vihear issue," Mr Nontawat said on Wednesday.
He said the documentary was censored because of the remarks made by villagers about Thailand's political situation over the past three years.
"The comments [made by the villagers] are facts that Thais in general already know and this shows that the panel is actually trying to censor the thoughts of people," Mr Nontawat said.
The ban on Boundary made headlines in international news media, including the Guardian, Washington Post and the Hollywood Reporter.