Answers.Body: <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>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-10-28T00:16:56.737Z
Answers.LastActivityDate: 2020-10-28T00:16:56.737Z
Answers.UserDisplayName: xer-rex
Body: <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>
  
Tags: <ffmpeg>
Title: How to detect if video had been sized up (Scaled up) in resolution?
UserDisplayName: Moody
ThreadText: # 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
  
  
  ---
  
  ## 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!
  
  
  ---
  
  