I'm relatively pleased with 5.1 so far. I've done several encodes with it - Fellowship Of The Ring, Murder By Numbers and Hannibal. I'm seeing an increase in quality, [not big but noticable]. It takes 5.1, in slow mode, about 4X longer than 5.05, in slowest mode, with all other settings similar. I also see @15% speed boost by turning off the feedback window.
Anyway, one of the things I checked first with 5.1 was the smoothness of blended backgrounds like fog or smoke or underwater. I'm not liking what I'm seeing. Instead of smoothness, I see a noticable banded/stepped halo effect... as if the color palette is limited and can't display a smooth transition from color shade to shade. My bitrates are fine and bits/frame is better than 0.25.
I had this in 5.05, and had hoped it would disappear in 5.1. Prime examples are underwater scenes in U-571, the hilltop/foggy fight/chase scene in Rob Roy, and in Fellowship Of The Rings where they're running from the pub being chased by the horsemen... horse slides to a halt on the dock... then you see the other horsemen arrive in the background [there where you have a backlit fog].
I usually encode in home theater mode, at 704 by X to 640 by X, with relatively high bitrates of 1200 to 1800, keeping an eye on bits/frame, using Lanzos resize filter and minimum/fast PV. That's it, no QPEL, no GMC, etc.
Anybody else seen this? Post-processing settings can fix it? Recommendations?
Thanks for any input/suggestions.
Anyway, one of the things I checked first with 5.1 was the smoothness of blended backgrounds like fog or smoke or underwater. I'm not liking what I'm seeing. Instead of smoothness, I see a noticable banded/stepped halo effect... as if the color palette is limited and can't display a smooth transition from color shade to shade. My bitrates are fine and bits/frame is better than 0.25.
I had this in 5.05, and had hoped it would disappear in 5.1. Prime examples are underwater scenes in U-571, the hilltop/foggy fight/chase scene in Rob Roy, and in Fellowship Of The Rings where they're running from the pub being chased by the horsemen... horse slides to a halt on the dock... then you see the other horsemen arrive in the background [there where you have a backlit fog].
I usually encode in home theater mode, at 704 by X to 640 by X, with relatively high bitrates of 1200 to 1800, keeping an eye on bits/frame, using Lanzos resize filter and minimum/fast PV. That's it, no QPEL, no GMC, etc.
Anybody else seen this? Post-processing settings can fix it? Recommendations?
Thanks for any input/suggestions.
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