“I am affirming that the institution of the Dalai Lama will continue,” the Dalai Lama said in the pre-recorded video, citing requests he received over the years from Tibetans and Tibetan Buddhists urging him to do so.

“The Gaden Phodrang Trust has sole authority to recognise the future reincarnation; no one else has any such authority to interfere in this matter,” he added, using the formal name for the office of the Dalai Lama.

The office should carry out the procedures of search and recognition of the future dalai lama “in accordance with past tradition”, he said, without revealing further details on the process.

Wednesday’s announcement – delivered days before his 90th birthday this Sunday – sets the stage for a high-stakes battle over his succession, between Tibetan leaders in exile and China’s atheist Communist Party, which insists it alone holds the authority to approve the next dalai lama.

Asked about the Dalai Lama’s statement, a spokesperson for the Chinese Foreign Ministry reiterated Beijing’s long-held stance that the spiritual leader’s reincarnation must comply with Chinese laws and regulations, with search and identification conducted in China and approved by the central government.

In a memoir published in March, the Dalai Lama states that his successor will be born in the “free world” outside China, urging his followers to reject any candidate selected by Beijing.

That could lead to the emergence of two rival dalai lamas: one chosen by his predecessor, the other by the Chinese Communist Party.

“Both the Tibetan exile community and the Chinese government want to influence the future of Tibet, and they see the next dalai lama as the key to do so,” said Ruth Gamble, an expert in Tibetan history at La Trobe University in Melbourne, Australia.

Samdhong Rinpoche, a senior official at the Dalai Lama’s office, told reporters on Wednesday that any further information about the procedures or methods of the Dalai Lama’s reincarnation would not be revealed to the public until the succession takes place.

Over a lifetime in exile, the 14th Dalai Lama, Tenzin Gyatso, has become synonymous with Tibet and its quest for genuine autonomy under Beijing’s tightening grip on the Himalayan region.

From his adopted hometown of Dharamshala, where he established a government-in-exile, the spiritual leader has unified Tibetans at home and in exile and elevated their plight onto the global stage.

That has made the Dalai Lama a persistent thorn in the side of Beijing, which denounces him as a dangerous “separatist” and a “wolf in monk’s robes”.

Since the 1970s, the Dalai Lama has maintained that he no longer seeks full independence for Tibet, but “meaningful” autonomy that would allow Tibetans to preserve their distinct culture, religion and identity. His commitment to the nonviolent “middle way” approach has earned him international support and the Nobel Peace Prize in 1989.

The Dalai Lama has long been wary of Beijing’s attempt to meddle with the reincarnation system of Tibetan Buddhism.

Tibetan Buddhists believe in the circle of rebirth, and that when an enlightened spiritual master like the Dalai Lama dies, he will be able to choose the place and time of his rebirth through the force of compassion and prayer.

But the religious tradition has increasingly become a battleground for the control of Tibetan hearts and minds, especially since the contested reincarnation of the Panchen Lama, the second-highest figure in the religion.

In 1995, years after the death of the 10th Panchen Lama, Beijing installed its own panchen lama in defiance of the Dalai Lama, whose pick for the role – a six-year-old boy – has since vanished from public view.

Under Tibetan tradition, the dalai lamas and the panchen lamas have long played key roles in recognising each other’s reincarnations. Experts believe Beijing will seek to interfere in the current Dalai Lama’s succession in a similar way.

“There’s a whole series of high-level reincarnated lamas cultivated by the Chinese government to work with it inside Tibet. (Beijing) will call on all of those to help establish the Dalai Lama that they pick inside Tibet,” Gamble said.

“There’s been a long-term plan to work toward this.”

A “resolution of gratitude” statement released by Tibetan Buddhist religious leaders gathering in Dharamshala on Wednesday said they “strongly condemn the People’s Republic of China’s usage of reincarnation subject for their political gain” and “will never accept it”.

For his part, the current Dalai Lama has made clear that any candidate appointed by Beijing will hold no legitimacy in the eyes of Tibetans or followers of Tibetan Buddhism.

“It is totally inappropriate for Chinese Communists, who explicitly reject religion, including the idea of past and future lives, to meddle in the system of reincarnation of lamas, let alone that of the Dalai Lama,” he writes in his latest memoir, Voice for the Voiceless.