Answers.Body: <p>There are a number of comparison algorithms available beginning with <a href="https://tools.ietf.org/id/draft-ietf-netvc-testing-06.html" rel="nofollow noreferrer">PSNR</a> through <a href="https://www.ssimwave.com/technology/" rel="nofollow noreferrer">SSIM/SSIMPLUS</a> to <a href="https://medium.com/netflix-techblog/toward-a-practical-perceptual-video-quality-metric-653f208b9652" rel="nofollow noreferrer">VMAF</a>. VMAF is implemented as an ffmpeg <a href="https://ffmpeg.org/ffmpeg-filters.html#libvmaf" rel="nofollow noreferrer">filter</a>.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-09-30T06:26:24.267Z
Answers.Text: Thanks Michael, kindly can you please also suggest a free tool that can help in the process. Thank you
Answers.UserDisplayName: user75464
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-09-30T17:50:41.503Z
Answers.Text: @user75464, what do you mean "help in the process?" I'd already suggested ffmpeg as it is able to run the VMAF algorithm. Are you looking to do something else?
Answers.UserDisplayName: Michael Liebman
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2019-09-29T23:20:23.457Z
Answers.LastActivityDate: 2019-09-29T23:20:23.457Z
Answers.UserDisplayName: Michael Liebman
Body: <p>I need to measure streaming video from various different codecs and be able to tell which one is better.</p>
  
  <p>What will be the best metrics to look for? </p>
  
  <p>Is there a free tool that can help with this. </p>
  
Tags: <video><video-quality><streaming><codec><performance>
Title: Video Quality Measurement test tool
UserDisplayName: user75464
ThreadText: # Video Quality Measurement test tool
  
  (Asked by: username_0 on 2019-09-29)
  
  I need to measure streaming video from various different codecs and be able to tell which one is better.
  
  What will be the best metrics to look for?
  
  Is there a free tool that can help with this.
  
  **Tags:** video, video-quality, streaming, codec, performance
  
  
  ---
  
  ## 1 answers
  
  ### Answer by username_1 on 2019-09-29. Score: 2 | Accepted answer
  
  There are a number of comparison algorithms available beginning with [PSNR](https://tools.ietf.org/id/draft-ietf-netvc-testing-06.html) through [SSIM/SSIMPLUS](https://www.ssimwave.com/technology/) to [VMAF](https://medium.com/netflix-techblog/toward-a-practical-perceptual-video-quality-metric-653f208b9652). VMAF is implemented as an ffmpeg [filter](https://ffmpeg.org/ffmpeg-filters.html#libvmaf).
  
  > **Comments:**
  > **username_0**: Thanks username_1, kindly can you please also suggest a free tool that can help in the process. Thank you  
  > **username_1**: @username_0, what do you mean "help in the process?" I'd already suggested ffmpeg as it is able to run the VMAF algorithm. Are you looking to do something else?  
  
  ---
  
  