[M4IF Technotes] Mp4 file's quality measurement. (fwd)

[Rob Koenen]

The interesting topic of automated quality evaulations comes up on these
lists from time to time.
I have spent a few million of my previous employer's dollars (euros) on
researching the issue. We obtained world class results.  But in the end,
intensive tests could not find that the objective measure we developed
differed from SNR in a statistically significant way. None of the
measures in that same test (carried out by ITU's Video Quality Experts
Group, vqeg, www.vqeg.org) performed better than good old SNR as a
matter of fact. 
So I'd like to caution people that want to use objective measures and
extend the conclusions to quality as observed by humans. These measures
are great for monitoring, they may help you in your coding research, but
they will not allow reasonable conclusions on how codecs compare.
Rob
> -----Original Message-----
> From: the_ether [mailto:the_ether   btinternet.com] 
> Sent: Wednesday, November 27, 2023 10:14
> To: technotes   lists.m4if.org
> Subject: Re: [M4IF Technotes] Mp4 file's quality measurement. (fwd)
> 
> 
> At the end of the day there's no better judge of the quality 
> than humans.
> 
> There has been some research on automated tools to try and 
> assess human perceptions. Indeed, the U.S. government is 
> promoting a software tool developed by an agency of the 
> Department of Commerce that can measure digital video picture 
> quality. See the following article:
> 
http://www.eetimes.com/story/OEG20021118S0027
> Hi all,
> I'd like to know if anybody knows any tool that can be used measure an

> mpeg-4 video file quality (PSNR, for example). I have to compare a 
> modified MPEG-4 file with its original. I am working in my master 
> course and it's extremely important to me. Thanks,
> Alisson.
>
>
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