Spec pair: Amazon Nova Reel and OpenAI Sora

Amazon Nova Reel and OpenAI Sora both print figures on 3 spec lines, resolution, frame shape and length; their readings differ on resolution, frame shape and length. From 3 source pages, read 2026-09-25; no maker pays to be listed.

Fig. 1 Filled: the vendor prints a figure. Empty: no figure, or not read.

Amazon Nova Reel and OpenAI Sora, reading by spec line, checked 2026-09-25.
Spec line	Amazon Nova Reel	OpenAI Sora
Maximum resolution	720p	1080p
Frame rate	One rate stated	No figure
HDR and bit depth	No figure	No figure
Aspect ratios	One shape named	Landscape and portrait
Longest single output	1 to 3 min	16 to 30 s
Watermark on output	Provenance metadata	No figure

Inclusion rule. The six spec lines every deliverable page carries. Order. Sheet order of the spec lines.

1Where the two sheets part

Both print pixel sizes rather than tiers. Nova Reel is 1280x720 only, one shape, in chains of six-second shots to two minutes; Sora adds 1920x1080 and 1080x1920 on sora-2-pro, in single generations of up to 20 seconds.

Maximum resolution

Amazon Nova Reel: 1280x720, the only dimension currently supported. OpenAI Sora: 1080p exports, 1920x1080 or 1080x1920, on sora-2-pro; 1280x720 in the examples.

Aspect ratios

Amazon Nova Reel: One frame size only, 1280x720; no other shape is offered. OpenAI Sora: Landscape and portrait sizes: 1920x1080 or 1080x1920 on sora-2-pro.

Longest single output

Amazon Nova Reel: Up to two minutes, generated in six-second increments. OpenAI Sora: Up to 20 seconds; both models support 16- and 20-second generations.

2Figures on file

Nova Reel
1280x720, the only dimension currently supportedvideoGenerationConfig.dimensionAmazon Nova user guide, video generation access and usage / recorded 2026-09-25
Models
1080p exports, 1920x1080 or 1080x1920, on sora-2-pro; 1280x720 in the examplessora-2-proOpenAI API docs, video generation with Sora / recorded 2026-09-25
Nova Reel
One frame size only, 1280x720; no other shape is offereddimension parameterAmazon Nova user guide, video generation access and usage / recorded 2026-09-25
Models
Landscape and portrait sizes: 1920x1080 or 1080x1920 on sora-2-prosizesOpenAI API docs, video generation with Sora / recorded 2026-09-25
Nova Reel
Up to two minutes, generated in six-second incrementsoverviewAmazon Nova user guide, video generation / recorded 2026-09-25
Choose size and duration
Up to 20 seconds; both models support 16- and 20-second generationsOpenAI API docs, video generation with Sora / recorded 2026-09-25

3One more delivery sheet beside Amazon Nova Reel and OpenAI Sora

SceneMixer's printed figure on the checks where Amazon Nova Reel and OpenAI Sora differ, read 2026-11-04.
Check	SceneMixer	Source
Maximum resolution	Resolution is set by the tier: Wan 3.0 at 480P (the default), 720P and 1080P, and a MiniMax H3 tier at 2K	SceneMixer MiniMax H3 tier guide
Aspect ratios	16:9 landscape by default, or 9:16 portrait, chosen once per project	SceneMixer, what comes out (video specs guide)
Longest single output	Segments of 15 or 30 seconds, chosen per episode; the tier table's longest clip is 30 seconds	SceneMixer, what comes out (video specs guide)

Inclusion rule. Checks on which the two tools differ and SceneMixer prints a figure; checks it prints nothing on are not shown. Order. The order checks take on every tool page.