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If you have ever tried to tweak a photo, only to watch the colors shift and the details blur a little more with every round, you already know the problem these tools are trying to solve. Picsart's announcements cover two related ideas: a better image model for making and editing pictures, and AI that changes the lighting in a video without a reshoot.
What Seedream 5.5 is
A model is the AI system that does the work behind the scenes. Seedream 5.5 is an image model from ByteDance Seed, the team that also built earlier Seedream versions. It can start from a written prompt (the instruction you type, such as "a snowy owl with spread wings") or work directly on a photo you upload.
ByteDance says it built the model for visual work that has to be usable on a deadline, not just impressive once. In Picsart, you can use it with up to 10 source images, either as images to edit or as guides for the subject, style, and composition.
Why repeated edits matter
Most image tools lose quality when you keep editing the same picture. Each new result is built from the last one, so small errors add up. Colors drift and faces change.
ByteDance says Seedream 5.5 is designed to protect the parts of an image you did not ask it to change. In its own demo, it ran one portrait through 100 edits in a row. Even after many rounds, the model could still swap something as small as a ring or a pair of glasses while keeping the lighting and shadows consistent.
For everyday creators, this means you can build an idea step by step. Add a jacket, then a background, then a small object, without starting over when the details begin to slip.
Transparent backgrounds without the cutout step
A transparent background means the subject is cut out, and the space around it is see-through. You can then place it on any design, like a sticker on a poster.
Normally, removing a background by hand is tedious, especially around hair, fur, or lace. Picsart says Seedream 5.5 can return a PNG file (a common image format that supports see-through areas) with the background already removed when you set the background mode to transparent. ByteDance's example, a snowy owl, shows fine feather tips and gaps coming through cleanly.
Useful uses include:
- Stickers and graphics for a layout
- Product cutouts for a banner or mockup
- Character images you can reuse across a series of scenes
Relighting a video with AI
Relighting means changing how light falls on a scene. Traditionally, that meant reshooting with different lights or waiting for a specific time of day. AI relight (a tool that redraws the light in footage after it is recorded) does this in software.
Picsart's Relight Feature template, part of Picsart Flow, shows the idea with a set of sample scenes. The same woman at a festival can appear in golden afternoon light, at twilight, or at night, while the subject stays the same and only the light changes.
Picsart groups the adjustments into three dials:
- Light source: effects such as spotlight, backlight, warm light, blue light, police lights, or rainbow light
- Time of day: settings from early morning to midnight
- Weather: rain, fog, snow, sunny, thunder, and more
Each preset shows a preview when you hover over it, so you can test a look before you run it. Picsart says relight works on video clips, while still images get their lighting from the prompt before they are animated.
Settings to know in Picsart
According to Picsart's announcement, Seedream 5.5 offers:
- Resolution options of 1K, 1.5K, or 2K
- Aspect ratios from square to wide and tall formats, including 16:9 and 9:16
- A negative prompt (a list of things you want the model to leave out)
- A background setting of auto, transparent, or opaque
Picsart also notes that Seedream 5.0 Pro remains available for high-end single images. Check the current plan details on Picsart's official pricing page.
Wrap-up
Seedream 5.5 focuses on steady edits, clean cutouts, and more realistic images, while Picsart's relight tools focus on changing the light in video. Both aim to make creative changes less risky. Your next step: open Picsart, pick one image you already like, and make a small edit. Notice what stays the same, and what you would still like to fix.