JSON2Video 4K costs 4x the credits; Sume Timeline sizes and rate

JSON2Video's pricing page charges 1 credit per second of rendered video, and 4K output costs 4 times the credits; its $49.95 pack holds 7,200 credits. Sume's Timeline has no resolution tier: it bills $0.10 per output minute, rounded up, and it accepts output widths and heights from 256 to 2160, so a 3840-pixel edge is not a Timeline output.

JSON2Video facts are from its pricing page, read 2026-10-01. Sume facts are from the Timeline docs. The vendor page also states an approximate per-minute range that does not reconcile with its credit rule, so this post uses only the credit rule.

How many seconds does 7,200 credits buy?

At 1 credit per second, 7,200 credits is 7,200 seconds, or 2 hours. At the 4x rate for 4K it is 1,800 seconds, or 30 minutes. That is the whole effect of the multiplier: the same pack renders a quarter as much 4K.

What does the same 2 hours cost on Sume?

If each output is one minute or less per render and you render 120 of them, Timeline is 120 minutes at $0.10, which is $12.00 before the 5.5% agent fee. If you render one 120-minute output, note that a single render is limited to 1,800 seconds of audio, so it must be split into at least four outputs.

Can Sume render 4K?

Not as 3840x2160. output.width and output.height take even integers from 256 to 2160, so 2160x2160 and 1080x1920 are valid and 3840x2160 is not. If you need a larger frame, generate or upscale it separately: image and video upscale are their own rate-card items. The default Timeline output is 1080x1920.

How do I know what a Timeline will cost?

POST /v1/timeline-1.0/plan is an unbilled preflight that returns billable_minutes and an estimate. It does not reserve credits or fetch media.