AI Zoom virtual background image: 16:9, 1280x720, PNG or JPG
Make a Zoom virtual background with the Sume image API: 16:9, at least 1280x720, PNG or JPG under 15 MB. Models, prices and what to keep out of the middle.

Zoom asks for a 24-bit PNG or JPG under 15 MB, at least 1280x720 pixels, cropped to your camera's aspect ratio; a 16:9 camera fits 1280x720 or 1920x1080. On Sume, request aspect_ratio: "16:9" from a model that lists it, then check the returned pixel size before you upload. A 16:9 render costs between $0.025 and $0.10 per image on the catalog rows below.
What Zoom's page says
Figures from Zoom's virtual background support page (read 2026-10-03).
| Item | Zoom says |
|---|---|
| Format | 24-bit PNG or JPG/JPEG |
| Maximum file size | 15 MB |
| Minimum recommended resolution | 1280x720 |
| Aspect ratio | Crop to your camera's ratio before upload; 16:9 example at 1280x720 or 1920x1080 |
| Video backgrounds | MP4 or MOV, 480x360 minimum, 1920x1080 maximum |
Pick a Sume model
Models that list 16:9 and take no reference are enough for a room scene. The Image API docs say a model only accepts the values its catalog descriptors list, so read supported_parameters first. These rows list 16:9 and the price shown is the endpoint line you are charged (read 2026-10-03):
- Zoom's 1280x720 floor is a pixel count, and the docs do not promise a fixed output size for every row. Open the file, read its width, and regenerate on a row with a higher tier if it falls short.
- Nano Banana 2 is the one row here whose descriptor lists
resolution; sendresolution: "2K"when you need headroom.
| Model | Price | Why use it here |
|---|---|---|
| Imagen 4 Fast | $0.025 | Cheapest clean scenes, text-to-image |
| Flux 2 Pro | $0.0375 | Photoreal rooms |
| Seedream 5.0 Lite | $0.04375 | Stylized interiors |
| Nano Banana 2 | $0.10 | Has 0.5K, 1K, 2K and 4K resolution tiers |
Compose for the camera, not the wall
A virtual background sits behind a person who fills the middle third of the frame. Ask for the interesting detail on the left and right and leave the center calm. Avoid readable text in the picture: image models can still struggle with precise text, per OpenAI's image guide, and a mirrored or garbled sign behind you looks worse than none.
Make a small set rather than one: a home office, a plain studio wall and a bookshelf cost about $0.11 together on Flux 2 Pro, and you can pick the one that sits best behind you. Prompt example: 'a quiet home office, wide 16:9, shelf with plants on the left, window on the right, empty soft wall in the center, natural light, photo'.
A request you can run
Replace the model with any row from the table. This writes a JPEG; check the size before you upload.
curl -s https://api.sume.com/v1/images \
-H "Authorization: Bearer $SUME_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"model": "black-forest-labs/flux.2-pro",
"prompt": "a quiet home office, shelf with plants on the left, window on the right, empty soft wall in the center, natural light, photo",
"aspect_ratio": "16:9",
"output_format": "jpeg"
}' | python3 -c "import sys,json; print(json.load(sys.stdin)['data'][0]['url'])"What Sume does not do
Sume does not check your camera's ratio or cut a person out. If your camera is 4:3, ask for 4:3 instead, which every row in the table also lists. A 200 response carries the image; a 202 means the job is still running and you read it from the job result endpoint.
Sources
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Written by Sume