AI Video Upscaling 8K from HD in 2026
Step-by-step process to convert 1080p source into 8K masters using Seedance 2.0 and Kling 3.0 inside Flixly. Includes model comparison table and verification checks.
TL;DR
Load 1080p footage into the Video to Video tool, choose Seedance 2.0 or Kling 3.0, set 7680x4320 output, run a sharpen pass in AI Video Effects, then export ProRes 4444. The workflow turns a 42-second clip into an 8K master in roughly 12 minutes and 40 credits.
A 42-second 1080p product demo arrives at 4:15 pm for an 8K trade-show screen that opens at 9 am.
Check the source specs first
Open the file in any player and note the numbers: 1920 by 1080, 24 fps, 42 seconds, H.264. These values set the upscale targets and credit estimate.
Pick the model that matches the motion
Seedance 2.0 handles clean product shots at 2x upscale to 8K in one pass. Kling 3.0 adds detail to camera moves but costs 12 credits per 10 seconds. Veo 3.1 keeps skin tones stable on talking-head footage. Sora 2 favors stylized content. Wan 2.7 works on low-light source but can soften edges.
| Model | Max output | Upscale factor | Credits per 10 s | \ Best for |
|---|---|---|---|---|
| Seedance 2.0 | 8K | 2x | 8 | Static product shots |
| Kling 3.0 | 8K | 2x | 12 | Moving camera |
| Veo 3.1 | 4K | 2x | 9 | Talking head |
Load the clip into Video to Video
Go to the Video to Video page. Drop the 1080p file, select Seedance 2.0, set target resolution to 7680 by 4320, and keep frame rate at 24. Add the prompt "sharp product details, natural lighting, no artifacts". Submit. The job returns a 48-second 8K file in 7 minutes and consumes 34 credits.
Refine edges with AI Video Effects
Open the new 8K file on the AI Video Effects page. Apply the sharpen filter at strength 0.6 and the noise reduction pass at 0.4. Export a 10-second test segment at 8K. Play it back at 200 percent zoom to confirm edge halos stay below visible levels.
Extend length if the client requests
If the final cut needs 60 seconds instead of 42, jump to the Image to Video tool. Generate three extra seconds from the last frame using the same Seedance 2.0 model. Stitch the new tail in any editor. The added segment matches color and grain because the model checkpoint stayed identical.
Create a motion poster for social cut-downs
Use the same 8K master on the Motion Poster page. Set duration to 6 seconds, loop the first frame, and export a 1080p square version for Instagram. This step reuses the high-resolution source so the downscaled post stays crisp.
Verify before delivery
Check three frames at 0 s, 21 s, and 41 s under 8K playback. Confirm no ringing around logos and that text remains legible at 400 percent zoom. If any frame shows softness, rerun only that segment through Video to Video with a 0.3 sharpen boost.
Export final deliverables
Render the full 8K master as ProRes 4444 at 24 fps. Create a 4K proxy at the same time for quick client review. Both files land in the project folder with the original 1080p source for version control.
Repeat the workflow on the next project
Open the Video to Video page again, load the new 1080p clip, and apply the same settings. The saved preset keeps resolution, model, and prompt fields populated so the second job finishes in under 10 minutes.
