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Quick answer
Grok Imagine is an AI video upscaler and video quality enhancer for short MP4 or MOV clips. Upload a video up to 10MB and 30 seconds, choose 2x or 4x, preview the output and credit cost, then compare before and after. A 960 x 540 input can upscale video to 4K at 3840 x 2160; smaller inputs can upscale video to 1080p or another calculated size.
AI video upscaling enlarges video frames and can improve perceived detail. Denoising, stabilization, restoration, frame interpolation, deinterlacing, colorization, and face enhancement are separate repair steps when the clip needs them.
Solve the problem first
Start with the footage problem, then use AI video upscaling as the resolution step in the larger repair workflow. Each answer below states what the upscaler can do and what may still need another tool.
Turn SD, 720p, or 1080p footage into a larger output that is easier to review and deliver. A 960 x 540 input reaches 3840 x 2160 with 4x processing; other input sizes produce different dimensions.
What to do next: Start with the highest-quality original that meets the 10MB and 30-second limits, then check the estimated output size before processing.
A video quality enhancer creates a larger working frame for footage with soft edges, codec blocks, banding, or repeated social exports. It can improve perceived detail, but severe blur and missing information still need manual review or a dedicated restoration step.
What to do next: Inspect text, faces, product edges, and high-contrast lines instead of judging the result from one paused frame.
Use AI video upscaling as one step in a larger workflow for VHS transfers, old home videos, noisy phone clips, shaky footage, or low-frame-rate recordings. Denoising, stabilization, deinterlacing, color restoration, and frame interpolation may still require a separate tool.
What to do next: Upscale after choosing the cleanest available copy and before final delivery or a second editing pass.
Send a completed Grok image-to-video or text-to-video result into the AI video upscaler without rebuilding its prompt or motion. Use the larger result to inspect faces, texture, text, and moving edges before publishing.
What to do next: Keep the original and enhanced output together in the same Video AI history workflow.
The workbench shows the original and upscaled video side by side after processing. Play the complete clip, compare motion and fine detail, then download only the version that passes your review.
What to do next: Review before delivery instead of trusting a single preview frame or a resolution number.
Proof, not promises
Compare four real original and enhanced video pairs: old handheld footage, a talking-head social clip, an AI-generated scene, and gameplay. These examples demonstrate restoration and detail enhancement; they do not claim a 4K output.
A degraded home-video style recording is restored for cleaner contrast, color, and subject detail.
Inspect: Skin tone, doorway edges, floor texture, noise, and color cast.
A soft presenter video is enhanced for clearer facial detail and a cleaner background before social publishing.
Inspect: Eyes, hair, shirt texture, background edges, and compression noise.
A stylized landscape clip is refined for cleaner silhouettes, surface texture, and more stable cinematic detail.
Inspect: Cliff edges, water reflections, figure silhouette, and fine texture.
A busy gameplay recording is enhanced so interface text, character edges, and fast-moving scene detail are easier to inspect.
Inspect: HUD text, ability icons, character outlines, neon signs, and motion.
#1 AI video upscaler
Grok Imagine connects a 4K-focused upscale step to a real Video AI workflow: see the expected output, know the cost, compare the complete clip, and keep the input and result in one private workspace.
The 4K video upscaler calculates output width and height from the uploaded video and selected factor. A 960 x 540 input shows 3840 x 2160 at 4x before processing.
What you can verify: Verify the input size, selected factor, estimated output, and credit estimate in the workbench.
This browser-based video upscaling software can open a completed Grok image-to-video or text-to-video result without rebuilding its prompt or motion.
What you can verify: The saved-video handoff loads the selected result into the Video AI workbench.
Four public comparison players let you inspect color, texture, edges, compression, and motion at the same timeline position.
What you can verify: Drag the divider or play the synchronized clips in the before-and-after section.
The workbench calculates credits from the rounded-up duration and selected factor before the task starts.
What you can verify: The estimate uses 40 credits per second for 2x, 70 for 4x, and a 100-credit minimum.
Upload in the browser, restore the draft after login, and review the completed result before downloading it.
What you can verify: The draft preserves the selected factor, uploaded video reference, and pending result.
Four-step workflow
The workbench keeps the primary action visible. The uploaded file remains in the session draft when login interrupts the flow.
Choose an MP4 or MOV up to 10MB and 30 seconds. Use the highest-quality original available because an AI video upscaler cannot recreate detail that was never captured.
Choose 2x for a moderate increase or 4x for a larger output. When the input dimensions support it, the workbench shows a 3840 x 2160 4K estimate before you spend credits.
Start the task after checking the output and credit estimate. The task continues after submission, and returning to this page restores the pending job in the result panel.
Play the original and upscaled video at the same size. Check faces, text, thin lines, motion, noise, and compression artifacts before downloading the result.
Know your output
4x is a multiplier, not a guaranteed 4K label. Use the input dimensions and selected factor to understand the expected output before processing.
4K condition: the estimated output must be at least 3840 x 2160. A 4x multiplier reaches 4K when the input is at least 960 x 540.
| Option | Output dimensions | Credit formula | Best for | Tradeoff |
|---|---|---|---|---|
| 2x upscale | Input width x2, input height x2 | max(100, ceil(seconds) x 40) | Routine enlargement, social clips, and a moderate quality lift. | Uses fewer credits per second and is usually the safer first test. |
| 4x upscale | Input width x4, input height x4 | max(100, ceil(seconds) x 70) | Small input frames that need a substantially larger output or a 4K delivery frame. | Uses more credits and can make defects in the original footage more visible during review. |
| Native high-resolution input | No dimension change | Not an upscale job | Footage that is already sharp and exported at the target dimensions. | May not benefit enough from upscaling to justify another processing pass. |
These examples show the arithmetic behind the 4K target. The completed file metadata remains the final authority for the actual output.
| Input | Factor | Output | Duration | Credits |
|---|---|---|---|---|
| 960 x 540 | 2x | 1920 x 1080 | 5 seconds | 200 credits |
| 960 x 540 | 4x | 3840 x 2160 | 5 seconds | 350 credits |
| 960 x 540 | 4x | 3840 x 2160 | 30 seconds | 2,100 credits |
Typical jobs
Creators, marketers, and AI video teams usually start with a clip that is usable but too small, soft, compressed, or inconsistent for its next delivery step.
Practical limits
An AI video upscaler is a resolution step, not a replacement for correct focus, stable motion, clean capture, or every restoration mode.
The output dimensions are calculated from the input dimensions. A 960 x 540 video can reach 3840 x 2160 with 4x processing, while a smaller input produces a different result.
AI video upscaling can enlarge frames and improve perceived detail. Denoising, stabilization, frame interpolation, deinterlacing, color restoration, and face enhancement may still require another processing step.
AI upscaling can reconstruct plausible texture and sharper edges, but it cannot guarantee correct tiny text, faces, logos, or product labels when the original clip is heavily blurred.
Direct uploads currently support MP4 and MOV files up to 10MB and 30 seconds. Split longer videos into short scenes, upscale each scene, and review continuity before editing them together.
A still frame can look sharp while motion reveals flicker, halos, or unstable fine detail. Play the entire result before publishing or using it in paid creative.
Questions
Direct answers about 4K output, blurry video, old footage, related repair steps, and credits.
Yes, when the input dimensions and selected factor reach a 3840 x 2160 frame. For example, 960 x 540 multiplied by four becomes 3840 x 2160. Smaller inputs can still improve, but the final output may remain below 4K.
It can improve perceived size, edges, and texture in soft or compressed footage. Severe blur, missing focus, heavy noise, and codec damage may need dedicated sharpening or restoration steps, and the complete clip should be reviewed before delivery.
Upscaling can be one step in an old-video restoration workflow after capture and basic cleanup. VHS and archival footage may still need denoising, deinterlacing, flicker repair, color restoration, or colorization before the final 4K upscale.
AI video upscaling increases frame dimensions; it does not replace frame interpolation, stabilization, or a dedicated face-enhancement pass. Use the upscaler as one part of the workflow, then check motion, facial identity, text, and edges in the final result.
Grok Imagine calculates video upscale credits from the rounded-up clip duration and selected factor. A 2x upscale costs 40 credits per second and a 4x upscale costs 70 credits per second, with a minimum charge of 100 credits. The exact estimate appears before processing.
Start free
Upload the input clip, check the output estimate, and compare the result before you download it.
