[x265, 4K] Post your results here!

Post your testing results with HandBrake.
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XiQui
Posts: 7
Joined: Wed Apr 15, 2020 5:17 pm

[x265, 4K] Post your results here!

Post by XiQui »

I have found that x265 4K encoding is a very time consuming task (especially for low end CPUs).

I am more interested in encoding fps for the ultrafast, medium and veryslow x265 presets for 4K videos.

I will start by posting my configuration and results:

CPU: Intel(R) Celeron(R) CPU G1610 @ 2.60GHz
Memory: 8GB DDR3 @ 1333MHz

Encoder: x265 (10-bit)
Settings: CRF 18

Video info: 4096x1708, progressive, 24 fps, YUV 4:2:2 (10-bit)

Results (average fps):
--- ultrafast: 3.09 fps
--- medium: 0.72 fps
--- veryslow: 0.07 fps

Thank you!
Woodstock
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Posts: 3854
Joined: Tue Aug 27, 2013 6:39 am

Re: [x265, 4K] Post your results here!

Post by Woodstock »

Benchmarks are worthless without some common factors.

What video source? Encode speed is intimately tied to source complexity.

What encode settings? Presets can change from version to version.
XiQui
Posts: 7
Joined: Wed Apr 15, 2020 5:17 pm

Re: [x265, 4K] Post your results here!

Post by XiQui »

Woodstock wrote: Sat Jul 04, 2020 10:39 pm Benchmarks are worthless without some common factors.

What video source? Encode speed is intimately tied to source complexity.

What encode settings? Presets can change from version to version.
OK, but I just want some results to compare encoding time (in fps), then anything else is not so relevant, I believe.

What I want here is to get some idea of 4K encoding time for different processors/systems for some specific x265 presets (ultrafast, medium and veryslow).

Thank you!
XiQui
Posts: 7
Joined: Wed Apr 15, 2020 5:17 pm

Re: [x265, 4K] Post your results here!

Post by XiQui »

Woodstock wrote: Sat Jul 04, 2020 10:39 pm ...
What encode settings? Presets can change from version to version.
OK, I did not know about this. Presets are as defined in x265 2.9.
XiQui
Posts: 7
Joined: Wed Apr 15, 2020 5:17 pm

Re: [x265, 4K] Post your results here!

Post by XiQui »

XiQui wrote: Sat Jul 04, 2020 8:06 pm ...
CPU: Intel(R) Celeron(R) CPU G1610 @ 2.60GHz
Memory: 8GB DDR3 @ 1333MHz

Encoder: x265 (10-bit)
Settings: CRF 18

Video info: 4096x1708, progressive, 24 fps, YUV 4:2:2 (10-bit)

Results (average fps):
--- ultrafast: 3.09 fps
--- medium: 0.72 fps
--- veryslow: 0.07 fps
...
The same system now using a different (and more complex) source:

CPU: Intel(R) Celeron(R) CPU G1610 @ 2.60GHz
Memory: 8GB DDR3 @ 1333MHz

Encoder: x265 (10-bit)
Settings: CRF 18

Video info: 4096x2160, progressive, 24 fps, YUV 4:2:2 (10-bit)

Results (average fps):
--- ultrafast: 1.67 fps
--- medium: 0.423 fps
--- veryslow: 0.045 fps
Woodstock
Veteran User
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Joined: Tue Aug 27, 2013 6:39 am

Re: [x265, 4K] Post your results here!

Post by Woodstock »

Then start by providing a source that is accessible to anyone who would be participating in the process. A popular one is Big Buck Bunny, from what I've read.
XiQui
Posts: 7
Joined: Wed Apr 15, 2020 5:17 pm

Re: [x265, 4K] Post your results here!

Post by XiQui »

Woodstock wrote: Sat Jul 04, 2020 11:47 pm Then start by providing a source that is accessible to anyone who would be participating in the process. A popular one is Big Buck Bunny, from what I've read.
Unfortunately, I cannot use a whole movie for testing because of time constraints (it would take days).

As I already said, I am interested in rough encoding times just to get an idea of how fast/slow 4K encoding is on a specific system.

The source used does not matter much, but if people use a challenging video for the encoder it would be better (detailed and/or high motion seem to be hardest).
batboy
Posts: 3
Joined: Tue Jun 30, 2020 9:03 am

Re: [x265, 4K] Post your results here!

Post by batboy »

Mac Pro Late 2013
12 Core Xeon E5-2697 v2
64gb ram
D500 graphics

Encoding UHD rip of Guardians of Galaxy Vol 2

H265 10bit, very slow, CRF18
Very Slow - 0.48 fps
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