[FFmpeg-user] PSNR measure

[José María Infanzón]

2018-07-12 21:52 GMT-03:00 Carl Eugen Hoyos <ceffmpeg at gmail.com>:

> 2018-07-13 2:39 GMT+02:00, José María Infanzón <jocheinfa at gmail.com>:
> > Hi - I need to measure quality if a live stream, and I was
> > thinking of measuring PSNR. So I was wondering how
> > can I run this test since it is a live stream
>
> > I do not have a refence stream or video.
>
> Then what exactly do you want to measure?
>

    >> I need to find a metric that somehow let me know if the stream has
an acceptable quality, probably based on some standard values. I though of
PSNR but I do not have the reference video, so I was wondering if there are
other parameters that might help measure quality.

>
> > Should I look for a reference video of the same
> > resolution and bitrate, like for example a Big buck
> > bunny, and compare against It?
>
> This makes only sense if the live stream shows Big Buck
> Bunny (and if you can assure frame synchronisation).
>
> Carl Eugen
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