[FFmpeg-user] Detecting upscaled video (resolution), detecting lower to higher encoding

[Jim Shupert]

On 7/19/2019 5:26 AM, Marc Roos wrote:
> Is there a way to ffmpeg or maybe another tool that detects if video has
> been re-coded to a higher resolution?
>
> For instance if I am offered two downloads one 720p and one 1080p. I
> have sometimes the impression that the 1080p is just the 720p converted
> to 1080p (not significant better quality). And thus just uses more
> space.
>
> I am not sure if I am using the correct terms here, I do not do to much
> with video nor audio. However I am getting more and more annoyed with
> the presence of 2K videos claiming to be 4K and 480p/720p claiming to be
> 1080p.
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I have wondered on this as well
my notion is there is a ' traceable artifact' left in the up Scaled - 
somewhere , somehow.
but how?