8 AHD camera inputs with NVP6324

Hi, I want to connect 2x the NVP6324 to the Jeston Nano module because I need up to 8 AHD (1080p@30 analog video inputs).
Is it possible without virtual channels? Is there a possiblity to active that feature for the Nano?
According to the datasheet the encoder can do
4x 1080p @ 30 (HEVC) or
9x 720p @ 30 (HEVC)
Is it possible to drop frames to realize combinations like
8x 1080p @ 15 (HEVC)
2x 1080p @ 30 (HEVC) and 3x 720p @ 30 (HEVC) and 3x D1 @ 25 (HEVC)
Thank you

Nano max support 4 cameras. For 8 you may need to use TX1 or Xavier NX