Most AI video generators deliver footage at 720p or 1080p, and the render often arrives with visible noise, blockiness, flickering detail, or banding in smooth gradients. If that clip goes into a final edit, every re-encode and crop makes the artifacts worse.
A dedicated video upscaler can reduce a large share of that damage, but it has honest limits. This guide sorts the fixable problems from the unfixable ones, then walks through a browser workflow you can finish in one sitting.
What upscaling can and cannot fix
Before spending any credits, split your problems into two lists.
Artifacts upscaling usually improves:
- Softness and low effective resolution
- Macroblocking from generation or compression
- Banding in gradients, skies, and dark scenes
- Mild shimmer and edge noise on textures
Problems upscaling cannot fix:
- Broken motion, morphing limbs, or wrong faces
- Objects that appear and disappear between frames
- Missing frames or severe stutter
- Text that was generated illegible
A good rule of thumb: if the problem is about sharpness and detail, upscaling helps. If the problem is that the underlying content is wrong, the fix is a new generation — not a higher resolution.
Step 1: Check your source before uploading
The cleaner the source, the better the upscale. If your generator offers a higher output setting, regenerate first. Avoid re-encoding through editors before upscaling, and keep the original export until you are done.
Then check what you actually have. The free resolution check tool reads width, height, and a simple sharpness score in your browser, without uploading anything. It also shows the next paid target next to your current file, which tells you immediately whether 4K is realistic or whether 1080p or 2K is the sensible ceiling.
Step 2: Estimate the cost before you commit
Video upscaling bills per second of source footage, with a 5-second minimum. On the standard model, one second costs 9 credits at 720p and 1080p, 17 credits at 2K, and 33 credits at 4K.
That means:
- The cheapest possible job is 45 credits (5 seconds at 720p)
- A 10-second clip at 1080p is 90 credits
- The same 10 seconds at 4K is 330 credits
The upscale cost calculator applies the same billing rules as the live tools, so you can price a clip before you upload it. The final number is always confirmed in the preflight screen before submission.
Step 3: Run the upscale
- Open the video upscaler
- Upload your clip (MP4, WebM, MOV, MKV, and AVI are accepted)
- Pick the model. Standard is the right starting point for artifact cleanup
- Choose the target resolution
- Confirm the credit cost shown in the preflight
- Wait for the render, then download and compare
If this is your first video job on a new account, you can finish a trial run on the standard model at 720p, up to 5 seconds, with a verified email. Use it on your worst 5 seconds — that is the most informative test you can run for free.
Step 4: Compare before and after properly
Watch the result at 100% zoom, not in a small player. Check the areas that bothered you most: faces, hands, gradients, and fast motion. Upscaling reduces some artifacts and can slightly change others, so compare the same frame before deciding the job succeeded.
Target resolution: 4K is not always the answer
Upscaling 720p footage to 4K means generating 9 output pixels for every source pixel. The model invents most of that detail, and at 33 credits per second the price is real. For most AI-generated clips, 1080p or 2K from a 720p source looks cleaner and costs less. Reserve 4K for sources that are already 1080p or higher.
When to switch models
If the standard model leaves halos around hard edges or softens fine texture, try the seedvr2 or pro models on a short test clip. They cost more per second and take longer to render, but they are designed for tougher detail work. The full comparison is in our model guide.
Summary
Check the source, price the job, test with a short clip, and only then scale up to the full render. The video upscaler shows the exact credit cost before you submit, so there is no reason to guess.