Quality Check - Improvemnts?

[Seraphic-]

Hi,

Wanted to get some feedback on the overall quality on how this encode turned out.
Viewing myself, it looks quite good vs. the original uncompressed.
The only thing it is lacking is some of the original sharpness.

Used the below settings:
program --pass 2 --bitrate 10000 --stats ".stats" --ref 8 --mixed-refs --bframes 3 --b-adapt 2
--b-pyramid --b-rdo --bime --weightb --direct auto --filter -1:-1 --subme 7 --trellis 2
--partitions p8x8,b8x8,i4x4,i8x8 --8x8dct --me umh --threads auto --thread-input
--progress --no-psnr --no-ssim --output "output" "input"

Download Link (http://www.seraphicgate.com/index.php?id=53#iseria)

Also, about zones, does that allow you to increase the bit-rate for the full resolution of the video at different points only?
Or are you able to say I want to increase the bit-rate for 640x179 section (lower right) of a 1280x716 video?

Thanks

[nm]

Also, about zones, does that allow you to increase the bit-rate for the full resolution of the video at different points only?
Yes, in specified scenes (between two points of time).

Or are you able to say I want to increase the bit-rate for 640x179 section (lower right) of a 1280x716 video?
Nope, you would have to modify x264 to do that.

[Seraphic-]

Nope, you would have to modify x264 to do that.

Yeah, that is what I was interested in doing. Since I have an overlay going in the lower right of videos (based on width/height). It is transparent, so wanted to localize extra data-rate there. Oh well, thanks anyway.

[Seraphic-]

About the video quality, just to see what it would come to, I did the encode using CRF 18 and it came to 18,988 bit-rate and about double the file size.
But is that too high for most computer systems to play though? My system seems to handle it okay.

[Atak_Snajpera]

I did the encode using CRF 18 and it came to 18,988 bit-rate and about double the file size.
The starting point should be CRF 22. 720p should give you something around 6Mbps (12Mbps for 1080p)

[Seraphic-]

The starting point should be CRF 22. 720p should give you something around 6Mbps (12Mbps for 1080p)

Hi,

Not sure if you watched the video, but there is a lot going on.
I first tried 7,500 two pass but it looked too blurry.
So then did two pass 10,000 which looked better.
But might even have to go to 12,500 to try and retain some more sharpness.
Will also try 22 CRF and 20 CRF and see what I get.

[Dark Shikari]

If you want it to look sharper at the cost of more artifacting/ringing, try psy-trellis (--psy-rd 1.0:someothervaluehere )

[Seraphic-]

If you want it to look sharper at the cost of more artifacting/ringing, try psy-trellis (--psy-rd 1.0:someothervaluehere )

Wouldn't encoding with more bit-rate also help retain the sharpness from the original uncompressed file?

[Ranguvar]

Yes. Bitrate helps all.

[LoRd_MuldeR]

Wouldn't encoding with more bit-rate also help retain the sharpness from the original uncompressed file?

I think it's all about a "Sharpness vs. Ringing" trade-off at a given bitrate ...