Search found 7 matches

by XiQui
Sun Jul 05, 2020 12:01 am
Forum: Benchmarks
Topic: [x265, 4K] Post your results here!
Replies: 7
Views: 899

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

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 ...
by XiQui
Sat Jul 04, 2020 11:45 pm
Forum: Benchmarks
Topic: [x265, 4K] Post your results here!
Replies: 7
Views: 899

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

... 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 ...
by XiQui
Sat Jul 04, 2020 11:44 pm
Forum: Benchmarks
Topic: [x265, 4K] Post your results here!
Replies: 7
Views: 899

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

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.
by XiQui
Sat Jul 04, 2020 11:25 pm
Forum: Benchmarks
Topic: [x265, 4K] Post your results here!
Replies: 7
Views: 899

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

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,...
by XiQui
Sat Jul 04, 2020 8:06 pm
Forum: Benchmarks
Topic: [x265, 4K] Post your results here!
Replies: 7
Views: 899

[x265, 4K] Post your results here!

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 M...
by XiQui
Wed Apr 15, 2020 8:05 pm
Forum: General Questions
Topic: Calculate New Video Bitrate
Replies: 2
Views: 290

Re: Calculate New Video Bitrate

Interesting. It worked!
by XiQui
Wed Apr 15, 2020 5:34 pm
Forum: General Questions
Topic: Calculate New Video Bitrate
Replies: 2
Views: 290

Calculate New Video Bitrate

OK, let's say I have a video. This video has a bitrate of 8192 kb/s, a resolution of 1920x1080, and X264 as codec. I want to re-encode it and change its resolution to 640x360, by using the same codec. The question is: What is the ideal bitrate I must use to re-encode this video? (using 2-pass encodi...