Aspect ratios, durations, and resolutions - Melius docs

Generative nodes expose shape settings that get passed to the underlying model.

Aspect ratios

Supported aspect ratios across image and video models: 21:9 · 20:9 · 19.5:9 · 2:1 · 16:9 · 3:2 · 4:3 · 5:4 · 1:1 · 4:5 · 3:4 · 2:3 · 9:16 · 1:2 · 9:19.5 · 9:20 · 9:21 Not every model supports every ratio. The node UI hides ratios the selected model can’t produce.

Image resolutions

Tier	Notes
`0.5K`	Fastest, lowest cost.
`1K`	Default for most image models.
`2K`	High detail.
`4K`	Highest tier. Slower and more expensive.

Video resolutions

Tier	Notes
`360p`	Fastest, lowest cost.
`480p`	Low cost.
`540p`	Low cost.
`580p`	Low cost.
`720p`	Fast, good for drafts.
`768p`	Between 720p and 1080p on some models.
`1080p`	Default.
`1440p`	High detail.
`2K`	High detail on supported models.
`2160p`	4K UHD on supported models.
`4k`	Highest tier. Slower and more expensive.

Durations

Video nodes accept a clip duration in seconds, bounded by what the chosen model supports. Each video model has its own min/max — the node UI clamps your selection to that range.

Last modified on August 21, 2026

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