PROMPT GUIDE

How to Improve AI Video Quality (resolution and frame rate explained)

When an AI video looks rough or the motion looks choppy, thinking of resolution problems and frame rate problems separately helps you find the cause. This guide goes in order through the difference between the two, how to prepare the source picture and cautions when upscaling a video.

Last updated: 2026-10-22 approx. 3 min read

日本語版

The short answer

Think of AI video quality as resolution (how fine the picture is) and frame rate (how smooth the motion is). First make the source picture high quality and then make the video, and upscale or interpolate the video if needed. The settings available change by service, so check the official guidance.

What is the difference between resolution and frame rate?

Resolution is how fine each frame is, and frame rate is how many frames are lined up per second, which decides how smooth the motion is.

Term	Meaning	How it looks when lacking
Resolution	The number of vertical and horizontal pixels in one frame	The picture blurs and lines smear
Frame rate (fps)	The number of frames per second	The motion looks choppy
Bitrate	The amount of data per second	Fine patterns collapse into blocks

The resolution, fps and export settings you can use change by service and plan. Check the official guidance before deciding on numbers.

Anime girl with finely drawn hair and eyes, a source image that upscales well for AI video — 顔が大きく細部が見える絵

Full-body anime girl with crisp outlines, a clean source that stays sharp when upscaled — 顔が大きく細部が見える絵

Illustration usage rules

How do you improve quality? (start from the source picture)

Video quality depends most on how fine the source picture is.

Steps for finishing an AI video cleanly

Make the source picture high quality (upscale the still so lines and hair tips are crisp)
Choose a picture with a composition where the face appears large and clear (small faces tend to get crushed in video)
Crop the picture to the aspect ratio of the video before loading it
Make the video, and use the service's quality enhancement or upscaling feature if needed (check the official guidance)
Before exporting, watch to the end of the video to check that the face and hands do not break

How to improve the quality of still pictures How to Upscale Images with AI (Enlarging Anime Art Cleanly) →

The idea of adding detail with Hires.fix Hires.fix Settings (Upscale Ratio, Denoising Strength, Upscaler) →

What if the frame rate is low and the motion is choppy?

The larger the motion in a video, the choppier it tends to look, so first make the motion smaller, and consider interpolation if that is still not enough.

Symptom	Possible cause	What to try
The whole thing is choppy	The fps is low, or the motion is fast	Slow the motion down and try an interpolation feature
Only the hands are choppy	The hand motion is complicated	Use a pose where the hands do not move
The picture melts after interpolation	The interpolation strength is too high	Lower the interpolation strength and try a short clip
It differs depending on the playback software	A difference in export settings	Check the export fps

What should you watch out for when upscaling a video?

Detail that is not in the original video cannot be created, so it is safest to treat upscaling as a finishing step.

In a video with a small face, the facial detail often does not come back even after upscaling
Upscaling too much can make lines unnaturally sharp or smeared
An upscaled video has a larger file size, so check the upload limit of where you post it
Upscaling software and features change with updates, so read the official explanation before using them

What if it is still rough? (common failures and fixes)

Failure	Cause	Fix
The face is blurry	The face is small, or the source picture is low quality	Remake it with a composition that has a large face, and improve the source picture
Lines get thick and smeared	Repeated upscaling and compression	Compress only once, at the very end
The background flickers	There are many fine patterns	Make the background simple
The colors turn whitish	Export settings or compression	Check the export settings and compare with the original colors

The girl stands still and smiles softly. Static camera, sharp clean lines, soft natural light.

Subtle motion: her hair sways gently in the breeze. Clean detailed illustration, static camera.

What should you check before improving quality?

Quality problems are often solved by reviewing the source picture and the motion before raising any settings. Check the following in order from the top.

Whether the lines and hair tips of the source picture are crisp (a blurry picture stays blurry in video)
Whether the face appears large enough in the frame
Whether the motion is too large (large motion makes it look choppy and rough)
Whether it is still watchable at a quality that survives recompression where you post it (check the platform's specifications in its official guidance)

Rinka's tips

Before adding settings that raise quality, simply making the motion smaller often reduces the roughness
A video posted to social media is recompressed by the app too, so a clean source makes the difference less noticeable

How to make vertical videos for social media How to Make Vertical Short Videos (9:16) with AI →

FAQ

Frequently Asked Questions

What resolution should I aim for in AI video?

The resolution you can use changes by service and plan, so we cannot give a fixed number. First check the official guidance, then decide to suit where you will post.

Is a higher fps always better?

Higher is smoother, but the file gets larger. Animation-style videos can sometimes look fine even at a low fps.

Can I improve video quality for free?

Whether there are free features or free allowances changes over time. Check the official guidance before using them.

Why is the video rough even after I improved the source picture?

The resolution setting when making the video and the effects of export and compression are possible causes. Review the settings and compress only once at the end.