Transcoding 4K

[mikeraburn 71]

4K is a fad.

Get off my lawn!!!!

 

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[Luke 42078]

The ffmpeg thread count is set to 'Auto', and it is using all available logical processors. Here are some performance stats, 4K HEVC 55 Mbps transcoded to 1080p H264 15 Mbps

 

System (also my storage server)

E3-1275 v3 (like a slightly lower clocked i7-4770)

4GB DDR3 with ECC

128GB Lite-On SSD (circa 2014 era)

Windows Server 2012 R2

 

CPU, ffmpeg 41 threads, ~33% across 8 logical cores

Memory, 2.7GB use, 1.3 GB free, ffmpeg using ~1GB

Disk IO, approximately 6 MB/s total (3 MB/s Read + 3 MB/s Write)

 

 

Also for those interested in getting a GPU, apparently the GT 1030 does not support HW HEVC encode. So the minimum you'd have to buy is a GTX 1050. The GTX 9xx series is Maxwell based, and IIRC does not have HW HEVC.

 

https://www.reddit.com/r/nvidia/comments/6w1rhn/gt_1030_hevc_encoding_capabilities/?st=jdhy525v&sh=2424492b

 

AMD Polaris (RX 4xx/5xx) HEVC support is apparently all over the place, but nevertheless, it should be advertised. I actually have a RX 460 in my HTPC and I can move it on my storage server and check it out.

 

Thanks for the info !