Born in Paris, Aliénor Vallet practices film photography at 15 years. In parallel with her studies in human and social sciences, she trained in filmmaking and then in video creation for live performance. In 2003 she founded the association Regards Entrecroisés Nord Sud in which she directs reports and documentaries before being in charge of the cinema programming of the French Cultural Center in Brazzaville from 2005 to 2007 where she also collaborates with choreographer Boris Ganga Bouetoumoussa as a videographer and artistic advisor, co-directs a dance film and realizes his documentary portrait. Then she collaborates with the author and director Dieudonné Niangouna on his play Le Socle des Vertiges, co-produced by the CDN Nanterre-Amandiers and presented at the Francophonies in Limousin in 2011.

From 2010, Aliénor Vallet turned to an experimental, conceptual and performative filmic writing and directed from 2014 to 1019 Artvidéo Lab, a video creation laboratory in which she creates a corpus of video works presented in numerous festivals and exhibitions in France and abroad. There she initiated and programmed the festival Les Irrécupérables dedicated to out-of-format film writing and interdisciplinary meetings La Semaine Floue in partnership with the Génie de la Bastille Gallery. She has also implemented multidisciplinary programming for the artistic factory La Ferme du Bonheur and Le 6b and managed from 2020 to 2023 the Culture Pole of the Franco-Nigerian Cultural Center in Niamey.

Recently, Aliénor Vallet collaborated as a video artist with the Gabonese choreographer Peter Nkoghé on his solo in tribute to women, and rejoined Dieudonné Niangouna for his latest creation Opération Rumba created at TAP in January 2025.