Resolution · compression blocks · soft detail · up to 4K
Video quality enhancer — what it fixes, and what it can't
Bad video quality has many causes, and an enhancer fixes some of them very well. Find your problem below, see whether AI enhancement solves it, and enhance the clip in your browser.
- Sharper detail, frame to frame
- Compression blocks removed
- Output up to 4K
- No watermark
Updated by the Kenerate AI team
Made with Kenerate
On this page
Quick answer
Updated
What does a video quality enhancer fix?
A video quality enhancer fixes 3 common problems: low resolution, compression blocks and soft detail. It rebuilds each frame with AI rather than just sharpening it. Kenerate's enhancer is its AI Video Upscaler: upload a clip up to 5 minutes and about 100 MB, choose 720p, 1080p, 2K or 4K, and download it with the same length and frame rate.
Key facts
- Fixes
- Low resolution, blocks, soft detail
- Doesn't fix
- Shake, low frame rate, colour
- Output sizes
- 720p · 1080p · 2K · 4K
- Clip limit
- 5 min · about 100 MB
- Kept
- Length, frame rate, aspect ratio
- Watermark
- None
Real demo
Enhance video quality: a 480p street scene at 1080p
Drag the line. Left: a real 480p night-market clip with soft signs and faces. Right: the same clip after the enhancer rebuilt it at 1080p.
- Original 480p. Soft neon signs, smeared steam and faces.
- Enhanced 1080p. Sharper signs, steam and faces, with no flicker between frames.
Unedited outputs, shown at the same size.
Enhance a videoReal results
Everyday clips that lose quality
A dim party, a phone vlog, a sports match, a pet and a concert: the kinds of footage that come out soft or blocky. Each is a real 5-second Wan 3 clip at 720p.
Example clips are AI-generated with Wan 3 at 720p; the demo above shows the enhancer's own output.
How to
How to enhance video quality
- Time needed
- Steps
- 4 steps
Step 1
Name the problem
Use the table below: low resolution, blocks and soft detail are what the enhancer fixes.
Step 2
Upload the clip
A video up to 5 minutes and about 100 MB; sign in with a verified email first.
Step 3
Choose the output size
1080p is the default; pick 2K or 4K only if the video will play on a bigger screen.
Step 4
Enhance
A short clip takes a few minutes; 4K and longer clips take much longer.
Open Video Upscaler and upload a clip, or pick one from your library or a link.
Watch the tour · 1:30
720p to 4K, 400 % zoom, every frame kept, before/after, vertical clips, hand-offs & chat
Chapters
Engines
Which video problems an enhancer fixes
Find the symptom, then check whether AI enhancement is the right fix. Rows marked Yes or Partly are what Kenerate's enhancer does; rows marked No need another tool.
- Main job
Fixes it: Yes
Low resolution
- Input
- Small, soft picture on a big screen
- Output
- Rebuilt at 720p, 1080p, 2K or 4K
Choose the size of the screen it will play on
Open Low resolution Fixes it: Yes
Compression blocks and banding
- Input
- Squares in dark areas, steps in skies
- Output
- Smoother gradients and cleaner edges
Re-uploaded, downloaded or heavily compressed clips
Open Compression blocks and bandingFixes it: Partly
Soft detail
- Input
- Edges and textures look smeared
- Output
- Sharper edges, consistent from frame to frame
Slight softness; a badly out-of-focus shot stays soft
Open Soft detailFixes it: Partly
Grain in low light
- Input
- Dim indoor or night footage
- Output
- Cleaner detail as it upscales
Dim but steady shots, like the concert clip on this page
Open Grain in low lightFixes it: No
Shaky camera
- Input
- The whole frame jitters
- Output
- Unchanged
Use stabilisation in a video editor first
Open Shaky cameraFixes it: No
Choppy motion
- Input
- Low frame rate, stutter
- Output
- Same frame rate as the upload
Needs frame interpolation, a different process
Open Choppy motion
All models (7)
Fixes it: No
Dark or washed-out colour
- Input
- Flat, too dark or wrong white balance
- Output
- Colours stay as recorded
Adjust exposure and colour in an editor
Open Dark or washed-out colour
Kenerate's enhancer keeps every frame you upload, so it never changes the length, frame rate or shape of the clip.
Tips
Increase video quality the easy way
Small habits that decide how good the result can get.
Enhance the original file, not a copy downloaded from social media.
Trim long clips to the part you need before uploading.
Stabilise and colour-correct in an editor first; the enhancer keeps what it gets.
Want captions on a 4K video? Add subtitles first, then enhance.
Don't run the same clip through twice; choose the final size once.
Watch the result on the screen your audience will use.
Example uses
How creators use video Quality enhancer
Illustrative examples of typical workflows, not customer reviews.
Amateur football coach
An amateur football coach could enhance a blocky phone recording of a match so players are easier to pick out when reviewing it.
Family archivist
A family archivist could enhance a soft, compressed clip from an old phone before sharing it with relatives.
Small-business owner
A small-business owner could enhance a quick product video filmed in dim light so the details look cleaner in an online shop.
FAQ
Video quality enhancer questions
7 questions
What is a video quality enhancer?
It is a tool that makes a clip look better without reshooting it. AI enhancers rebuild each frame at a higher resolution, remove compression blocks and sharpen soft detail in a way that stays consistent from frame to frame. Kenerate's enhancer is its AI Video Upscaler, which outputs 720p, 1080p, 2K or 4K.
Link to this answerCan a video enhancer fix a blurry video?
Partly. It sharpens soft edges and textures and rebuilds detail that compression smeared, so slightly blurry clips look clearly better. It can't refocus a shot that was badly out of focus or undo strong motion blur, because that detail was never recorded.
Link to this answerCan it fix shaky or choppy video?
No. Shake needs stabilisation and choppy motion needs frame interpolation, and both are different processes. Kenerate's enhancer keeps the frames you upload, so the length and frame rate stay the same. Stabilise in a video editor first, then enhance the steadied clip.
Link to this answerIs there a free video enhancer?
Video editors have basic sharpen filters for free, and open-source upscalers run free on a capable computer. Kenerate's enhancer runs online with no subscription: it uses credits, new accounts get starter credits to try it, and the result has no watermark.
Link to this answerHow do I increase video quality without a huge file?
Pick the smallest size that fits the screen. 1080p suits phones, social media and most websites, and finishes much faster than 4K. Higher sizes make sense for 4K TVs, large monitors or edits that mix with 4K footage.
Link to this answerDoes it remove pixelation from downloaded clips?
Yes, that is one of its strengths. Clips that were uploaded and downloaded several times pick up blocky squares and banding, and the enhancer smooths them while it rebuilds detail. Start from the cleanest copy you can find, because heavier damage leaves less to work with.
Link to this answerShould I add subtitles before or after enhancing?
For a 4K file, add subtitles first. Kenerate's subtitle tool outputs 720p or 1080p, so captioning an enhanced 4K clip would bring it back down. Caption the original, then enhance the captioned clip to the size you need. For a 1080p result, either order works.
Link to this answerIn depth
Video quality, diagnosed
Why clips look bad, what enhancement changes, and where its limits are.
On this page
Three reasons a video looks bad
Most poor-quality clips have one of three causes, and only the first two are fully fixable afterwards.
What enhancement does to each frame
Kenerate's enhancer runs the LTX-2 video upscaler. It looks at neighbouring frames to rebuild plausible detail [2], smooths compression blocks and banding, and keeps the sharpening consistent so edges don't flicker or shimmer as the clip plays.
Resolution vs bitrate
Resolution is how many pixels a frame has; bitrate is how much data per second describes them [3]. A 1080p clip at a low bitrate can look worse than a clean 720p one. That's why an enhanced file is usually larger: it carries both more pixels and the detail that fills them.
Video enhancer free
Free options are basic sharpening in an editor or local open-source upscalers that need a strong GPU. Kenerate runs online with no subscription, on credits, and new accounts start with some.
Enhance video quality online
Online enhancers do the heavy processing on their own servers. Upload the clip, choose a size and download the result; your computer's graphics card doesn't matter.
Increase video quality of a phone clip
Phone clips usually suffer from compression more than resolution. Enhance the original from your camera roll, not a copy that has already been posted and downloaded.
Explore
Every Kenerate video tool
Generators, tools, models and guides — all in one studio.
Enhance your video's quality
Sharper detail and cleaner frames at 720p, 1080p, 2K or 4K. No subscription, no watermark.
Tried it? Tell us how it went