Guides
Sume guides: the API, Formats, agents, models, media tools and pricing, each answer dated and sourced.
AI ghost mannequin: remove the mannequin, keep the shape
A ghost mannequin photo shows a garment's 3D shape with no mannequin. Make one with an AI image edit of your photos; cut it out if you need a PNG.
AI food photography: restyle your real dish or generate one
Photograph the real dish and let AI restyle the scene around it, or generate food from a prompt where no dish is promised. Prompts, steps, and limits.
AI image prompt examples: a template and 8 prompts to copy
A good AI image prompt names the subject, setting, style, light, and framing in a sentence or two. A template, 8 examples, and what goes in settings.
AI photo editing prompts: change one thing, keep the rest
An AI photo editing prompt says what to change and lists what to keep. The pattern, plus examples for background, light, color, style, and cleanup.
Image to image AI: turn your photo into a new picture
Image-to-image AI redraws your photo from a text instruction: a new style, background or color. What it changes, what it keeps, and how to run it.
What size is 16:9 in pixels? Common 16:9 and 9:16 sizes
16:9 is a shape, not one size: 1280 × 720, 1920 × 1080, 2560 × 1440 and 3840 × 2160 are all 16:9. How to work out any size, and how to make one.
Text to image API: send a prompt, get image URLs back
A text-to-image API turns a prompt sent over HTTPS into generated images. How to call one: the request, the response, slow jobs, and the cost.
How long does it take to generate an AI image?
On Sume, most AI images finish inside the 30 seconds the API holds a request open. What makes one take longer, and how to tell slow from stuck.
AI sprite generator: make 2D game sprites and sprite sheets
Make 2D game sprites with AI: one pose per image on a plain background, the same character reference every time, then a transparent PNG cutout.
AI image generator for presentations: 16:9 slide images
Make AI images for a presentation at the slide's shape, 16:9 by default in PowerPoint: exact pixel sizes, one style on every slide, room for text.
Twitter video ad specs: X Ads sizes, length, and file rules
X recommends video ads of 15 seconds or less, up to 1 GB (ideally under 30 MB), H.264 at 29.97 or 30 fps, in six sizes from 9:16 to 1.91:1.
CTV ad specs: video rules from five streaming TV sellers
CTV sellers ask for 16:9 video, H.264 or ProRes, and two-channel audio, but each sets its own lengths and a bitrate floor from 5 to 15 Mbps.
Roku ad specs: video and audio rules for Roku Ads Manager
Roku ads must be 16:9, 6–92 seconds, .mov or .mp4 up to 1 GB, 23.98, 25 or 29.97 fps, 6 Mbps or more, with 48 kHz 2-channel stereo audio.
Hulu ad specs: Disney's video rules for Hulu and Disney+
Hulu and Disney+ ads must be 16:9 (1920×1080 preferred), H.264 or ProRes at 23.98–30 fps, with one two-channel audio track of 128 kbps or more.
Amazon Sponsored Display video specs: display ads with video
Amazon display ads with video, formerly Sponsored Display, take 16:9 at 1920×1080 or more, 6–45 seconds, up to 500 MB, and autoplay muted.
Amazon Sponsored Products video: specs and guidelines
Sponsored Products video takes 1–5 silent feature videos per product: 7 seconds or longer, 16:9 (1920×1080 recommended), MP4 or MOV up to 500 MB.
YouTube Masthead specs: video size, autoplay, and captions
A YouTube Masthead plays a Public or Unlisted YouTube video, ideally 16:9 at 1920×1080 or higher, and autoplays muted for up to 30 s on desktop.
Social media video sizes: 8 platforms in one table
Vertical 9:16 is the video shape most platforms list. The sizes TikTok, Instagram, Facebook, YouTube, Snapchat, X, LinkedIn, and Pinterest give.
YouTube video size: 16:9 resolutions and upload settings
The standard YouTube video size is 16:9, and 1080p is 1920×1080. Every 16:9 size and bitrate YouTube recommends, and its 256 GB upload limit.
LinkedIn video size: dimensions, length, and file limits
A video in a LinkedIn post can be 256×144 to 4096×2304 pixels, 1:2.4 to 2.4:1, 75 KB to 5 GB and up to 15 minutes long. How to render one to fit.
Google Ads image sizes: 1200×628, 1200×1200, and 960×1200
Google's most common ad image sizes are 1200×628 (1.91:1) and 1200×1200 (1:1), plus 960×1200 (4:5) for Performance Max, as JPG or PNG up to 5,120 KB.
LinkedIn ad image size: 1200×628, 1:1, and 4:5 specs
LinkedIn recommends 1200×628 for single image ads, 1200×1200 for square and 720×900 for 4:5, as JPG, PNG or GIF up to 5 MB. Carousel cards: 1080×1080.
Etsy banner size: big and mini shop banner dimensions
Etsy recommends 1600×400 px for a big shop banner (1200×300 minimum) and 1600×213 for a mini banner. Logo sizes, file types, and a 4:1 AI banner.
Google Play feature graphic size: 1024×500 requirements
A Google Play feature graphic must be 1024×500 px, a JPEG or a 24-bit PNG with no alpha, and you need one to publish. The rules, and making the art.
Steam capsule sizes: header, small, main, and vertical
Steam's capsules are 920×430 (header), 462×174 (small), 1232×706 (main) and 748×896 (vertical). What each may show, and how to make the art at size.
YouTube watermark size: 150×150 minimum, under 1 MB
YouTube's video watermark must be a square image of at least 150×150 pixels and under 1 MB. When it shows, where it's hidden, and how to make one.
YouTube end screen template: a 5–20 second 16:9 outro
A YouTube end screen template is a 16:9 outro of 5–20 seconds with room for up to four elements. YouTube's rules, and how to make the outro with AI.
How to make a YouTube channel trailer with AI
A YouTube channel trailer greets people who haven't subscribed. What to say, how long to make it, and how to render one with an AI avatar.
Stream starting soon screen: make an animated loop
A stream starting soon screen is a looping video the size of your stream's canvas. How to make an animated one with AI: the loop, the words, the length.
Event promo video: make one with AI from your poster
An event promo video sets the mood and shows the name, date, venue and ticket link. How to make one with AI from your poster, in 9:16 and 16:9.
How to make dropshipping video ads with AI
Make dropshipping video ads from a product photo you may use: short vertical clips, a few hook versions, and a check against the real product.
Product video prompt examples: a template and 6 shots
A product video prompt describes one shot: the action, one camera move, the light, the setting. A template, six examples, and what goes in fields.
How to change the background of a video with AI
Give a video-to-video AI model your clip and a prompt that names the new background and what must stay. How to do it on Sume and what to check.
How to remove an object from a video with AI
Name the object in a video-to-video AI edit prompt and say what stays. How to do it on Sume, how to swap or add objects, or blur them instead.
Video to anime AI: how to turn a clip into anime
To turn a video into anime with AI, use a video-to-video edit that names the style and what to keep, or restyle one frame and animate it.
Day to night video with AI: edit, generate, or grade
Turn a day video into night with a video-to-video AI edit, generate a day-to-night clip from two stills, or darken it with a color grade.
How to make AI videos from text or a photo
To make an AI video, pick what it starts from, describe the shot, set its length and shape, then generate and review. How to do each step on Sume.
How to write a prompt for an AI video generator
Write an AI video prompt as one shot: subject and action, camera, light, and framing. A template, worked examples, and what goes in settings instead.
Image to video prompt examples: what to write
An image-to-video prompt needn't describe the photo again. It says what moves, what the camera does, and what stays still. Examples by photo type.
Camera movement prompts for AI video: pan, dolly, orbit
Name the camera move in the prompt, one per shot, with its direction and speed; Sume's video API has no camera setting. Terms, examples, and limits.
AI cartoon video generator from text: how to set the style
Name the cartoon or anime look in your prompt, or draw a styled still first and animate it as the first frame. Sume's video API has no style field.
AI video transition generator: bridge one shot to the next
An AI transition is a generated clip that starts on the last frame of one shot and ends on the first frame of the next. How to make one with Sume.
Earth zoom out AI video: from your photo to space
Make an Earth zoom out AI video by pinning both ends: your photo as the first frame, the Earth from space as the last, and one zoom in the prompt.
AI construction timelapse: from empty lot to finished build
An AI construction timelapse pins the empty site as the first frame and the finished building as the last. The model invents every stage between.
AI 360 rotation video: spin a product from two photos
From one photo, AI invents every side it can't see. For a 360 rotation video, pin the front and back as frames, make two half turns, and join them.
Image to drone shot AI: turn a photo into an aerial move
To turn an image into a drone shot, send it as the first frame of an AI video and describe the aerial move. Everything past the photo is invented.
AI hug video generator: from two photos to one hug clip
Make an AI hug video in two steps: combine both people in one still and check it, then animate it with a prompt that describes the hug.
AI video with multiple characters: get everyone in one shot
Give the model every character: one still with the whole cast as the first frame, or one reference image per character on a model that takes several.