Editing Avatar: Fire and Ash (section)

=== Filming ===
Principal photography on ''Avatar: The Way of Water'' and ''3'' began simultaneously on September 25, 2017, in Manhattan Beach, California. On November 14, 2018, Cameron announced filming with the principal performance capture cast had been completed. Most filming on the next two sequels will begin after wrapping the post-production on first two sequels. According to producer [[Jon Landau]], live-action filming for ''Avatar 3''and its predecessor commenced in New Zealand in early 2019. On March 17, 2020, Landau announced that the filming of the ''Avatar'' sequel films in New Zealand had been postponed indefinitely in response to the COVID-19 pandemic. He also confirmed that production would remain in Los Angeles. However, work on visual effects will continue at Weta Digital in Wellington.

In early May, health and safety production protocols have been endorsed by the New Zealand government, allowing filming to resume in the country. However the production team for the Avatarsequels has not yet returned to New Zealand. On May 31, part of the Avatar crew including James Cameron were granted entry into New Zealand under a special visa category for border exemptions for foreigners deemed essential to a project of "significant economic value." On June 1, 2020, Landau posted a picture of himself and Cameron on Instagram, showing that they had returned to New Zealand to resume filming. After their arrival, all 55 crew members who had traveled to New Zealand started a 2-week government-supervised isolation period at a hotel in Wellington before they would resume filming. This would make ''Avatar: The Way of Water'' and ''3'' the first major Hollywood blockbusters to resume production after postponing filming due to the pandemic. In September 2020, Cameron announced that 95% of ''Avatar 3'' had been completed. Filming wrapped in December 2020.

In early July 2022, the New Zealand Film Commission acknowledged that the ''Avatar'' sequels had received over NZ$140 million worth of taxpayer funding via the country's Screen Production Grant. By comparison, ''[[The Hobbit]]'' trilogy had received NZ$161 million in film subsidies. While ACT party deputy leader Brooke van Velden criticised the Government's film subsidy programme for allegedly diverting public funding from other areas, the Economic Development and Regional Development Minister Stuart Nash argued that New Zealand's film subsidies for major Hollywood products brought substantial overseas investment and jobs for the New Zealand film industry.

In February 2024, Cameron gave the following update on ''Fire and Ash'':
It's pretty much in the can. We're shooting pick-ups on [''Fire and Ash''], which is just filling in the last 2 or 3%, and we've also got live-action pick-ups in June, that's another couple percent. We've got about a quarter of movie 4 in the can. We're post on [''Fire and Ash''] and now doing the VFX, which is an enormous job. I'll need every second between now and then to get it done. The tech has reached the point right now where it's really what we need. We make little improvements as we go along, but we're there. The whole point is we jumped back, that's why we spent seven years building to it and four years shooting the two films together. It's not about the technology, but about the minds and eyes of the computer artists. It's a very, very creative process—it's artistry. Thousands of people are involved and conducting the orchestra to get it all pitch perfect right now.