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3rd May 2019, 10:48 | #21 | Link | |
Lost my old account :(
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Anyway, did you try lowering ctu and merange? edit: "ffmpeg.exe" -i "1080p25_input" -vf "scale=960:540" -f yuv4mpegpipe -strict -1 - | "x265.exe" --y4m --input-depth 8 --output-depth 10--preset slow --profile main10 --level-idc 31 --crf 23 --ctu 32 --merange 26 --keyint 100 --min-keyint 25 --rc-lookahead 100 --vbv-maxrate 3000 --vbv-bufsize 3000 --no-open-gop --colorprim bt709 --transfer bt709 --colormatrix bt709 --range limited - -o NUL I guess this is some what simlar to the video settings you are going for, I get 60% CPU usage on 24T with those. edit2. Wait what, 14x realtime!? Are you hitting 350fps? I'm hitting close 2x realtime with the settings above, ~45fps. Last edited by excellentswordfight; 3rd May 2019 at 14:04. |
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3rd May 2019, 11:28 | #22 | Link | |
The cult of personality
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Also, I liked the xeon build because it allows me to run engineering software (solidworks, rendering stuff,etc...) better than normal cpu. I also do some light gaming (league of legends) so although xeons are not suitable for gaming, they are enough for that if I pair them with a good gpu (say 1080ti gtx or something). that was the plan and it won't be applied before 6 months or so. So is this ryzen 2700 any good for gaming and big demanding software? how much fps do you get while encoding (just a general estimate) 1080p material? rough figures are welcome. edit: kindly give me the link to that benchmarking thread. |
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3rd May 2019, 12:14 | #23 | Link | ||
Lost my old account :(
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Last edited by excellentswordfight; 3rd May 2019 at 12:46. |
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3rd May 2019, 15:05 | #24 | Link | |
The cult of personality
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I am planning to get a nice desktop computer later on, which is to be used for everything including encoding, engineering software (solidworks, autocad plant 3d, etc...), little gaming (not too huge ones) and so on. Some people recommended Ryzen 2700x to me as the best for all-purpose PC, coupled with good nvidia GPU (1060 or more). In encoding, I use vapoursynth with stuff like bm3d, f3kdb, line stuff, etc.. and encode 1080p material mostly and in x264-10bit. I have online.net atom 2750 dedicated server which is no were near good for encoding but I get it done since I don't really care for speed on a dedicated server. However, I really want some nice fps if I wanna do it on my desktop right? I'd say 10 fps is nice and +20 fps is good for such a script. ofc, encoding to lossless then directly to 1080p and 720p seems faster. |
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3rd May 2019, 19:51 | #26 | Link | |
The cult of personality
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I use x264-10bit so I need good cpu to do it, but also should be good enough for gaming and stuff. is ryzen 2700x the one? |
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3rd May 2019, 22:58 | #29 | Link | |
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5.1 was just some leftover code from UHD.. I can lower it since its not needed.. Anyway, did you try lowering ctu and merange? Nope, i have zero clue what those 2 mean. edit: "ffmpeg.exe" -i "1080p25_input" -vf "scale=960:540" -f yuv4mpegpipe -strict -1 - | "x265.exe" --y4m --input-depth 8 --output-depth 10--preset slow --profile main10 --level-idc 31 --crf 23 --ctu 32 --merange 26 --keyint 100 --min-keyint 25 --rc-lookahead 100 --vbv-maxrate 3000 --vbv-bufsize 3000 --no-open-gop --colorprim bt709 --transfer bt709 --colormatrix bt709 --range limited - -o NUL I guess this is some what simlar to the video settings you are going for, I get 60% CPU usage on 24T with those. Strange that im not getting that.. edit2. Wait what, 14x realtime!? Are you hitting 350fps? I'm hitting close 2x realtime with the settings above, ~45fps.[/QUOTE] Well thats what the benchmark result said. Prores file is on a NFS share with 10gig interface Last edited by TEB; 3rd May 2019 at 23:00. |
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4th May 2019, 00:04 | #30 | Link | |||
Lost my old account :(
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"Maximum CU size (width and height). The larger the maximum CU size, the more efficiently x265 can encode flat areas of the picture, giving large reductions in bitrate. However this comes at a loss of parallelism with fewer rows of CUs that can be encoded in parallel," The benefit of the defaut value of 64 isnt that big with lower resolutions, so it can be a very nice trade off performance wise to lower it if you are seing low thread utilization. And with a lower CTU merange can also be lowered. Quote:
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18th June 2019, 21:03 | #31 | Link |
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I cannot saturate the cores of my threadripper 1950X even by running 4 pcs of 2160p encodes in parallel. At first, my machine is running out memory (16GB).
I am using preset slow and 1 frame thread in my encodes. My threadripper behaves completely differently as the one of blublub's. Any advice would be appreciated. |
21st June 2019, 11:18 | #32 | Link | |
RipBot264 author
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Windows 7 Image Updater - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper |
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21st June 2019, 12:13 | #33 | Link |
Herr
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@Atak_Snajpera. He's probably doing that for better image quality on the encodes.
Using many threads in x265/x264 equals worse image quality. If the encode had a lower resolution than 2160p, I'd suggest lowering --me-range and --ctu. Last edited by Forteen88; 21st June 2019 at 14:01. |
21st June 2019, 19:29 | #34 | Link |
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I always use --frame-threads 1 myself but I only need two encodes for my 20 threads and I have 32GB of memory.
Two frame threads has very little impact of quality, it may be worth it. Either that or more RAM.
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21st June 2019, 20:18 | #35 | Link |
Derek Prestegard IRL
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There are occasional issues with more than 1 frame thread, I highly suggest anyone using vbv to only use 1 frame thread
There are also still edge cases where using vbv will cause a few frames of explosive blocking, mostly with HDR. I'm actually working right now on isolating the issue. |
23rd June 2019, 21:35 | #36 | Link |
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Thanks for the answers.
I solved this "memory" issue by: - switched memory mode to local from distributed; - switched off SMT in AMD Ryzen Master; - installing 4x8Gbyte RAM instead of 1x16GB; - using 8 threads per encode (4 encodes are being run in parallel to reach 100% processor utilization and ~60% level of memory); - using 1 frame thread per encode with preset slower; - this way my 1950X System is working stable while encoding time is quite acceptable until I my new PC arrives. |
24th June 2019, 09:43 | #37 | Link | |
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Windows 7 Image Updater - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper |
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24th June 2019, 17:13 | #38 | Link | |
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But I am going to stop my encodes to see if you are right indeed. …..I couldn't prove that smt has more than no effect on fps on my System maybe SMT is only useful in enoding with specific settings Last edited by mparade; 24th June 2019 at 19:25. |
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24th June 2019, 20:20 | #39 | Link | |
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Quote:
http://forum.pclab.pl/topic/1184884-x265-FHD-Benchmark/ If you disable SMT then you lose ~15%
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Windows 7 Image Updater - SkyLake\KabyLake\CoffeLake\Ryzen Threadripper Last edited by Atak_Snajpera; 24th June 2019 at 20:31. |
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24th June 2019, 22:07 | #40 | Link |
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I see but this 15% is not realized in fps during encode on my 1950X. No improvement is actually realized, just try it. If it is not the case by you, then your settings must be different than those of mine.
Last edited by mparade; 25th June 2019 at 07:26. |
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