La información que se está dando no es correcta o exacta
1. La edición USA es BD-R y no se ha editado en el formato original.
2. Este mensaje que voy a reproducir a continuación es la respuesta de la compañía distribuidora de Housebound a un usuario cuando salió a la venta en Australia
Thank you very much for your email and for your support of New Zealand films and Rialto Distribution releases. The NZ/AU SKU DVD and BLU-RAY builds for HOUSEBOUND were encoded to exacting film maker and producer requests and as the film was made specifically to screen both theatrically and in home entertainment at 25fps, the DVD and BLU-RAY reflect this. If you saw the film in cinemas, the film screened in 25fps DCP format, a frame rate that the director intentionally chose for his film, to keep a rocketing pace in joke timing and jump scares, among other creative factors.
The DVD and BLU-RAY products have been fully approved by the director, producers and distributors in both Australia and New Zealand. Having discussed your email with the encoder of the NZ/AU SKU, this is the technical explanation for your query:
This Blu-ray was encoded at the original speed of 25fps at the request of the producers. Blu-ray only allows for 25fps footage to be encoded as 1080i, not 1080p. That said, the film is completely progressive and encoded as PsF so the quality is essentially the same if the customer's display is set up properly.
When Blu-rays are advertised as 1080p they are usually encoded from a 24fps or 23.98fps source, as are most films we encode. However for HOUSEBOUND this would have meant slowing the film down resulting in compromises to audio quality, so in fact encoding the film at 1080i25 is keeping the release at a higher quality, closer to the original master. I assume this is why the producers requested us to keep the speed as per the master.