<p>May i rephrase your question as</p>
<blockquote>
<p>How natural does an image look?</p>
</blockquote>
<p>If so, you are finding Naturalness Image Quality Evaluator (NIQE). Plz take a look of <a href="https://ww2.mathworks.cn/help/images/ref/niqe.html" rel="nofollow noreferrer">Naturalness Image Quality Evaluator (NIQE) no-reference image quality score</a>. Then you may find some information from <a href="https://live.ece.utexas.edu/research/Quality/index_algorithms.htm" rel="nofollow noreferrer">Laboratory for Image &amp; Video Engineering</a> and then you will get some tools like</p>
<ul>
<li><a href="http://www.scikit-video.org/stable/measure.html" rel="nofollow noreferrer">scikit-video</a></li>
<li><a href="http://vq.kt.agh.edu.pl/metrics.html" rel="nofollow noreferrer">Video Quality Indicators</a></li>
</ul>
<p>Good Luck!</p>

CC BY-SA 4.0
2020-10-28T00:16:56.737Z
2020-10-28T00:16:56.737Z
xer-rex
<p>On Internet, I can see many videos/movies claim to have FHD (1920x1080) resolution, but on watching they seem to be shot in lower resolution and resized/scaled up using encoder or transcoding tool to 1080p resolution.</p>
<p>My question: is there any tool to detect such scaling up?
If possible, I prefer ffmpeg tool, or knowledge base of such detection.</p>
<p>Thanks,</p>

<ffmpeg>
How to detect if video had been sized up (Scaled up) in resolution?
Moody
# How to detect if video had been sized up (Scaled up) in resolution?

(Asked by: username_0 on 2020-10-26)

On Internet, I can see many videos/movies claim to have FHD (1920x1080) resolution, but on watching they seem to be shot in lower resolution and resized/scaled up using encoder or transcoding tool to 1080p resolution.

My question: is there any tool to detect such scaling up?
If possible, I prefer ffmpeg tool, or knowledge base of such detection.

Thanks,

**Tags:** ffmpeg


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## 1 answers

### Answer by username_1 on 2020-10-28. Score: 0 | Accepted answer

May i rephrase your question as

> How natural does an image look?

If so, you are finding Naturalness Image Quality Evaluator (NIQE). Plz take a look of [Naturalness Image Quality Evaluator (NIQE) no-reference image quality score](https://ww2.mathworks.cn/help/images/ref/niqe.html). Then you may find some information from [Laboratory for Image & Video Engineering](https://live.ece.utexas.edu/research/Quality/index_algorithms.htm) and then you will get some tools like

* [scikit-video](http://www.scikit-video.org/stable/measure.html)
* [Video Quality Indicators](http://vq.kt.agh.edu.pl/metrics.html)

Good Luck!


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