Cleaner Detail and Smoother Motion From One MP4
Enhancement and enlargement are two jobs that usually get sold as one. Knowing which one your clip needs is most of the result.
Enhance has been stretched until it describes almost nothing in particular, and two genuinely different complaints hide inside it. One is that a clip is too small: the frame does not carry the pixels a large display, a client master or a platform re-encode needs, and what is required is a bigger canvas. The other is that the clip is already the size you want and the picture inside it fails to read — edges are soft, fine texture has collapsed, grain is sitting on top of whatever detail survived, and motion looks coarser than it did in the viewfinder.
This page is about the second complaint, and saying that plainly is what keeps it from competing with the page that handles the first. The AI video upscaler covers taking a source clip up to 4K; this page stays with clarity and motion inside the frame you already have. Concretely that means Video HD, the video tool in the OpenFilmo workspace at app.openfilmo.com, described in its own panel as boosting clarity and fps. It takes MP4, costs 32 credits per run and carries an estimated 1 to 4 minute wait. What it publishes is those two words and that one price — no output resolution and no target frame rate are stated anywhere in the panel, so this page does not invent any.
What it does
Built for this specific job, not a generic editor.
Clarity inside the frame you have
Detail and edge transitions are strengthened where some structure survived in the source. What that means in practice is that a clip which is soft but not empty usually improves, and a clip whose detail was discarded upstream has very little left to strengthen.
Motion smoothness, listed as fps
Frame rate is the second thing the panel names, alongside clarity. No target rate is published, so treat smoothness as an outcome to confirm by playing the result rather than as a number you can order.
MP4 in, nothing else
MP4 is the accepted input. Anything else needs exporting first, and the export is worth doing deliberately: handing over a file at a low bitrate means asking the tool to work from footage that has already lost the detail you are paying to recover.
Two other live tools on the same balance
The tools list states that only watermark removal, image enhancement and video HD enhancement are available right now. Those three draw on one credit balance inside the same workspace, so a job that needs two of them does not mean two accounts or two subscriptions.
How it works
Four steps, no timeline to learn.
Go back to the master, not the copy
A file that has been uploaded, re-downloaded, screenshotted or clipped out of a longer video has already been compressed, sometimes several times. Those artefacts sit exactly where real detail would be, and nothing downstream can tell them apart afterwards.
Export MP4 at a bitrate the footage deserves
Give the tool as much of the original signal as you can reasonably upload. Raising the bitrate costs disk space; sending a thin file to be clarified costs the whole run.
Run it and wait 1 to 4 minutes
Each run costs 32 credits and the panel quotes an estimated 1 to 4 minutes. Start with the clip that worries you most rather than the one you care about least, because that is the one that decides whether the rest are worth spending on.
Judge in motion, then decide if size was the real problem
Play the result at speed on the device it will actually be watched on. If the clip still fails because the frame is too small rather than too soft or too choppy, you have diagnosed a size problem — that is the AI video upscaler, and a second clarity pass will spend credits without touching the complaint.
What people use it for
The jobs this actually gets used for.
Archive and digitised footage
Old tape and early digital transfers carry soft edges and coarse motion. Where the original capture resolved the detail, a clarity pass makes it readable again; where it did not, the honest answer is that it never made it onto the tape.
Screen recordings and training capture
Interface text, cursor edges and fine UI lines are the first things a low-bitrate screen capture destroys. Enhancing the MP4 before it is re-uploaded gives the platform something better to compress.
Footage from phones in difficult light
Dim, handheld phone clips tend to be soft and grainy at once. Improvement is real where grain is light and detail is present; it is negligible where the noise is doing more of the work than the picture.
Clips before a platform re-upload
Every distribution step re-encodes your file. Cleaning the master first means the platform compresses clean detail instead of compressing mud, which is usually where the visible difference is won.
Why clarity, frame rate and resolution are three different purchases
Most disappointment with an enhancer is really an unmet expectation about size.
A clarity pass works inside the pixels that exist. It strengthens transitions already present in the data, and a transition has to be there to be strengthened. That is why two clips which look equally poor in a thumbnail can behave in completely different ways: one carries enough residual structure to build on, and the other lost it somewhere upstream, usually to a low bitrate, repeated re-encoding, or a lens that never resolved the detail to begin with.
Motion is a separate axis with separate failures. Judder, stutter and smear all read as bad movement, but they have different causes and different prospects — a clip that is choppy because of how it was captured is a different problem from one that is simply soft, and confusing the two is how people end up disappointed by a run that did exactly what it says.
Resolution is the third axis, and it is the one this page does not sell. If the honest diagnosis is that the frame needs to be bigger, the AI video upscaler is the right destination and clarity work is not a substitute for it. If the frame is the right size and wrong in its detail or its motion, clarity work is exactly the right tool, and paying for pixels you cannot perceive is money spent twice on one file.
Credits and plans
Every tool draws on one shared credit balance.
One Video HD run costs 32 credits, with an estimated 1 to 4 minute wait, and the arithmetic against the Free plan is worth stating plainly: Free gives 30 credits a month, which is two short of a single run, so the free allowance cannot start one. Starter is $9 a month for 400 credits and two parallel tasks — twelve runs at 384 credits. Pro is $19 for 1,000 credits, three tasks and a priority queue; Studio is $59 for 4,000 credits, six tasks and API access. Free still covers the other two live tools, and its exports carry no watermark with commercial use included.
Related guides
Longer reads on the same workflow, from the OpenFilmo blog.
AI Video Upscaling to 4K: Refiners, Settings and Limits
How AI video upscaling and one-step refiners work, when to upscale versus regenerate at native resolution, and the settings that a…
AI Video Cost Per Minute: The Real Numbers in 2026
How to calculate true AI video cost per finished minute: generation price, regeneration waste, edit time and iteration, with worke…
Best AI Video Generators 2026: 15 Tools Tested
We tested 15 AI video generators on the same prompts and ranked them for 2026. Compare quality, speed, credit pricing and commerci…
Related tools
Closely related pages on the same problem.
Frequently asked questions
How much does one run cost, and does the free plan cover it?
32 credits per run, and no — the Free plan gives 30 credits a month, which is two short of one Video HD run. Paid plans start at $9 for 400 credits, which is twelve runs at 384 credits. Free remains usable for watermark removal and image enhancement, which cost less per run.
Which file formats does the video tool accept?
MP4. That is the accepted input, so anything else needs exporting to MP4 first. Export at a bitrate the footage deserves, because a thin file arrives with part of the detail already missing.
How is this different from your AI video upscaler?
The upscaler page addresses size — taking a source clip up to 4K. This page addresses clarity and motion inside the frame you already have. Video HD is described in its panel as boosting clarity and fps, with no output resolution published, so anything that depends on reaching a specific resolution belongs on the upscaler page.
What will it not fix?
Detail that was never captured, from motion blur, heavy compression blocking or a source that never resolved it; and clips where grain outweighs what is left of the picture. It is also not a stabiliser and not a colour tool — the panel lists clarity and fps and nothing else.
Can I use the enhanced video commercially?
Yes. Commercial use is included on the Free plan as well as on paid plans, and exports carry no watermark. You still need the rights to the underlying footage: running a clip through a tool does not transfer ownership of it.
More OpenFilmo tools
Other generators and utilities in the same workspace.
Halloween pages
Scene ideas, prompt libraries and a step-by-step walkthrough for the Halloween effect.
More OpenFilmo tools
Other generators and utilities in the same workspace.