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Old 4th February 2020, 00:43   #29236  |  Link
Sharc
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Join Date: May 2006
Posts: 3,997
Quote:
Originally Posted by jdobbs View Post
Thanks!

I'll take a look at these, and I'll also do some PSNR and SSIM comparisons.

[Edit] You're right... you'd never guess by looking that the 38MB file was compressed that much more than the 270MB original.
Well, the smoothing (loss of details) is obvious when you step through the frames in interleaved mode. It doesn't mean that the compressed version is not pleasant to view, it just looks like a denoised original and loss of details in low contrast areas.
Comparisons with SSIM, PSNR and VMAF have already been posted in doom9, but one has definitely to make his own tests and optimize encoder settings, like constant quality versus constant quantizer etc. for ffmpeg NVEnc or rigaya's NVEncC.
One 'problem' I see with HW encoding is that BD-RB would have to analyze the user's HW in order to suggest the appropriate encoder settings.

Last edited by Sharc; 4th February 2020 at 00:49.
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