[M4IF Technotes] Distortion Testing for Encoder

[Manu V Batura]

Thanks Rob,
But are there any objective tests for distortion that can be used
for testing which encoders are better. If distortion is the competitive
measure, there
should be distortion thresholds available that may be used to call some
encoders good
and some bad.
Thanks & Regards,
Manu
-----Original Message-----
From: technotes-admin   lists.m4if.org
[mailto:technotes-admin   lists.m4if.org]On Behalf Of Rob Koenen
Sent: Wednesday, August 14, 2023 10:54 AM
To: 'manu.batura   patni.com'; technotes   lists.m4if.org
Subject: RE: [M4IF Technotes] Distortion Testing for Encoder
Indeed, any decoder that produces a valid bistream is compliant
to the standard. There are deliberately no prescribed quality
metrics, nor is there any prescribed algorithm to perform the
encoding.
This means there will be good encoders and bad ones...
Best,
Rob
> -----Original Message-----
> From: Manu V Batura [mailto:manu.batura   patni.com]
> Sent: Tuesday, August 13, 2023 20:53
> To: technotes   lists.m4if.org
> Subject: [M4IF Technotes] Distortion Testing for Encoder
>
>
> Hi,
>
> As per Part-4 of the standard, it seems that any video
> encoder that can
> generate a compliant bitstream would be
> compliant to the standard. However, is there aso a
> corresponding distortion
> measure that needs to be acheived?
> (something like RMSE etc). If yes, what are the thresholds
> that should be
> used for testing 'acceptable video quality'/'allowable video
> distortion'?
>
> Thanks & Regards,
> Manu V Batura
>
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