X264 threads. Say you have 60 FPS, that's 16.
X264 threads. com/hvdmuqz/rocket-league-crashes-when-joining-game-pc.
This document was originally written at that time. The rule of thumb is that x264 can utilize 1 thread per 40 lines of vertical resolution. Parameters to pretty much always use: me=umh — better motion estimation. Nov 10, 2015 · After a study of the ffmpeg x264 source code, I found that the key parameter leading to such long encode time is sliced-threads which enabled by -tune zerolatency. But I’ve always liked this one, because it’s not wholly synthetic…and it’s not proprietary software maintained by someone else. --pools specifies the number of pools and the number of threads per pool the encoder will allocate. To give you a bit x264 --fullhelp x264 core:160 r3000 33f9e14 Syntax: x264 [options] -o outfile infile Infile can be raw (in which case resolution is required), or YUV4MPEG (*. mkv DESCRIPTION x264 core:133 r2339 585324f Syntax: x264 [options] -o outfile infile Infile can be raw (in which case resolution is required), or YUV4MPEG (*. Dec 10, 2017 · Remove that custom option, as it only makes sense to reduce max threads this way, if you run some thing like a Thread Ripper with 32 Threads. (unless threads=1 is used but this will probably overload encoder) Encoding and/or live streaming may need to be on for threads to show up in "Process Hacker". ) Mar 8, 2011 · I use staxrip to encode and i usually use x264 high profile, crf 18, veryslow, film tune. Sep 18, 2021 · That is what x264 used in the early days (and is still available as an option, for low-latency scenarios). So optimally you would use 1 thread per encode, and as many parallel encodes as there are cores. Try adding the custom param threads=24 to override the default logical cores*1. 5 x logical cores why does x264 use more threads than cores available? 3. 5 for frame threads and cores x 1 for slice threads. subme=9 — subpixel refinement on all frames. To give you a bit Dec 26, 2021 · NVENC produces video on-par with x264 Slow, with no in-game performance impact as it is a separate part of the GPU die specifically for video encoding. I checked and the files are indeed there, sonot sure if it would be related: Feb 10, 2012 · Lan Kwai Fong 2011 BluRay 1080p DTS x264-CHD Lan. To give you a bit Oct 27, 2016 · TL;DR: in my experience x264 is much better than Nvenc at recording high resolution, high frame rate, heavy GPU load games So, I used to have a 1080p monitor and I recorded 1080p60 with Nvenc. And, with frame-based threading, the effect of the thread count on quality should really be negligible. To give you a bit x264 Parameters. At least on the dual-core, 4-thread i5-6200U, the default x264 CPU usage is 333/400%, whereas with --threads 4 it's 268%. 264 $ x264 --preset ultrafast --threads 1 -o x264_preset_ultrafast. x264-CHD RELEASE DATE. or libav* formats if compiled with lavf support (yes) or ffms support (yes). Runs fine on my 5900X in a single pc setup. x264(エックスニーロクヨン)は、動画をh. 4 days ago · Welcome to Mobilarian Forum - Official Symbianize forum. Join us now to get access to all our features. May 8, 2020 · The settings above from older comments are for peasants cpus lol. Sep 23, 2023 · This is not recommended unless you know what you are doing. I have a 5900x and set it 12 because thats half my cpu, enabling me to still play games while encoding, or to run 2 encodes simultaneously, usually the latter. I read AMDs encoder is nowhere near Nvidias, so I tried x264 today. And with sliced-threads disabled, the CPU usage will be 40%, while only 20% when enabled. You can Mar 5, 2019 · #1 - technically speaking yes its a option for people that do have "weak" cpu's - as we continue to progress with more demanding games and our streams get more creative and populated with scenes and such, nvidia nvenc is a good option to alleviate the stress your cpu when utilizing x264. To give you a bit Nov 22, 2017 · CPU based x264 encoding has these pros/cons: + efficient (good quality per bitrate @very fast preset and slower settings) - high CPU load Pascal Cards seem to deliver a better NVENC encoding efficiency that older cards, but x264 is still king, when it comes to low bitrates (<10. 264 (mpeg-4 avc) ビデオストリームへエンコードするためのプログラムである。 GPL ライセンスの下でリリースされている。 Feb 7, 2011 · The speed gain should be slightly less than linear until you start using more than 1 thread per 40px of vertical video, at which point the gain from additional threads sharply decreases. But with a 16 core cpu it would lower my threads manually for better visual quality. You need 1 thread per 40 lines of resolution. 264 Video Codecs Comparison, with ~24% better encoding than second place. For comparison, here is the same scene encoded using x264 veryfast in both a low-motion high-detail scene, and a high-motion scene. 1080p. To give you a bit May 21, 2023 · Here’s the agenda. So many people tend to use a modified lower tune grain setting for x265. x264 is working as it should. Jun 6, 2020 · EposVox submitted a new resource: Ultimate Encoder Quality Analysis 2020 (NVENC vs AMF vs QuickSync vs X264) - You might be surprised After far too many requests to updated my previous X264 vs NVENC and NVENC vs AMF/VCE videos with newer AMD drivers, I've finally put together what I consider Mar 12, 2013 · Note: "stillimage" is for people writing tools that use x264 to encode a single still frame, as an alterntive to JPEG or JPEG2000. Mar 29, 2019 · I have a high-end HPE ProLiant DL325 G10 server with an AMD EPYC 7401P 24-core/48-thread CPU, 128GB DDR4 RAM, and a Intel P4800x PCIe NVMe. That leaves your 3 threads for gaming, voice software, and anything else you are running. OBS uses the best open source video encoding library available, x264, to encode video, and can use hardware encoders like NVENC on high end GPUs. Thread Pools x265 creates one or more thread pools per encoder, one pool per NUMA node (typically a CPU socket). Mar 12, 2013 · Note: "stillimage" is for people writing tools that use x264 to encode a single still frame, as an alterntive to JPEG or JPEG2000. 9 threads is not is extremely inefficient for 1080p encoding, which usually wants around 21 threads for maximum output (which is why a 3900x or 3950x is so damn good at x264). Contribute to mirror/x264 development by creating an account on GitHub. x264 Git mirror. y4m $ mediainfo x264_preset_ultrafast. y4m), or Avisynth if compiled with support (no). After disabled using -x264-params sliced-threads=0 the encode time can be as low as 2ms. 5x the number of threads your processor supports. 264 encodes (using x264) by the beloved HDBits. com/forum/threads/comparison-of-x264-nvenc-quicksync-vce. Clips should be at least 10min long, to make sure 2pass rate control really has to do something. --threadsを1から増やしていくと、エンコード速度がかなり上がる。--threads 12~15あたりが最速。やはりスレッド数を増やしすぎると、少し遅くなるようだ。--threads 1の時に対する倍率に直すとこんな感じ。--threads 1 のときと比べると、最大で4. “Output > Output Mode > Advanced > Recording > Encoder > (Use Stream Encoder)” was selected by the The site consists of untouched* PAL/NTSC DVDs, and top quality H. Slice-based threading was brought back (as an optional mode) in r1364 for low-latency encoding. You can either go with performance or quality just add [space] after the code above then add any of the following ones: Zero Latency Performance: aq-mode=0 subme=0 no-deblock sync-lookahead=3. subme: set the subpixel estimation complexity. To give you a bit # encode using ultrafast preset, using one CPU thread to raw h. May 6, 2014 · This thread is to invite experts and the interested to share notes on the popular x264 v2 stress test. To give you a bit Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. So anybody using custom settings on this CPU, please Jul 14, 2020 · For these settings the program works fine. The reason you are getting encoder overload is because you were not letting x264 use enough threads to handle the encoding for the specified settings. mkv video. Sep 3, 2021 · - X264 Options : thread=48 rc-lookahead=70 trellis=2 direct-pred=spatial OBS 'VIDEO' TAB as IS: - Base + Canvas : 1920x1080p - Downscale Filter - Bicubic (HEAVY CPU filter but edges out way better to me than lanzcos) - Common FPS : 60 On the X264 Options I have experimented by using a LOT of different options and looking at what affected what. x264 profile main vs high There is a minor but visible quality difference between main and high profile especially in high motion scenes. If it was me, I'd stick with software x264 just to avoid the performance issues, much less the poor quality. (Not sure atm. As such, you really want to encode at 720p with your set-up when using x264. I specified it as single threaded by setting param. 5 days ago · Welcome to Mobilarian Forum - Official Symbianize forum. Recommendation: Default "The quality loss from multiple threads is mostly negligible unless using very high numbers of threads (say, above 16). I used medium CPU speed, main profile, 6k bitrate. Too many x264 threads increases latency and have more encoding memory usage. So if you do the math on 720p video, that's 18 threads. But if you have a bottleneck elsewhere in your processing adjusting x264 threads won't help. 5 for x264). That was probably from the 4:3 aspect ratio days so it might be lower now (which is a good thing). Nov 20, 2023 · The quality loss from multiple threads is mostly negligible unless using very high numbers of threads (say, above 16). By default x265 allocates one thread per (hyperthreaded) CPU core on each NUMA node. While there are many different settings to consider, here's a guide on why the following OBS settings are a great choice for streaming on Twitch: Encoder: x264 x265 and x264 were included in all the comparisons I listed except for x265 in 2012 (naturally). Normally, this is ok, and is a worthwhile trade-off to speed up encoding. If you have a multi-processor machine, you should really consider using it as it Sep 8, 2023 · I have been using the old x264 Stability test since 2014…THATS 9 years ago. 33x more bitrate. The site consists of untouched* PAL/NTSC DVDs, and top quality H. i_threads as 1. Without AQ, x264 tends to underallocate bits to less-detailed sections. Especially with i9s since they have lot more threads. com Dec 30, 2017 · Why x264 threads=7? And about the taskbar, moving it to the secondary monitor every time I need to record isn't exactly convenient. To give you a bit Apr 27, 2012 · First of all: check the x264. Spend time on this page and learn how x264 works, and experiment around until you find what works best for you. obs의x264 설정 공백으로 구분엑스스플릿의 custom등 보시면8x8dct=1 aq-mode=2 bfra… Jan 18, 2024 · Encoding video is a very CPU-intensive operation, and OBS is no exception. . 75 bframes=16 threads=36 non-deterministic=true direct=auto ref=4 partitions=all. Mar 26, 2020 · 9 Mal editiert, zuletzt von iAvoe (15. To give you a bit Jan 22, 2018 · More than that was wasted or even detrimental. Otherwise, just default to umh:--me umh Ratecontrol lookahead Was x264 8bit or 10bit? 4 vs 3 gb - It's not a great comparison if one version uses 1. The default setting provides more or less optimum speed. net There are 12323123 options for stress testing in 2023. To give you a bit The site consists of untouched* PAL/NTSC DVDs, and top quality H. Given processor technology changes over the past decade Sep 26, 2017 · Meaning that x264 will open 30 threads to encode the video. The default settings should be fine for most people. Say you have 60 FPS, that's 16. To give you a bit Feb 1, 2023 · I recently upgraded to a 5900x and I am now messing around with the X264 custom settings looking to get a little more quality. To turn off lookahead, you can use the lookahead_threads = 0 command. Processor threads are not the same as x264 threads. It could however still be helpful for people doing a video which is essentially a slideshow of still images where a static image is shown unchanged for many frames before changing to the next image, as long as it literally is a static slide show with no transitions. Optimize x264 Quality/x265 Quality Resources: With libx264 it is cores x 1. x until the bitrates match, but at high CRF , low bitrate ranges high amount of threads can become more important and noticable Mar 17, 2023 · Guide for best custom obs x264 settings When it comes to streaming on Twitch, having the right OBS settings can make all the difference in terms of image quality and overall performance. You lose quality beyond that. But it seems it can't do much compared to the 3600 I was previously using. 9]> : Subpixel motion estimation and partition decision quality default value: 7; sout-x264-mixed-refs <boolean> : Decide references on a per partition basis default value: enabled threads: This option allows to spawn threads to encode in parallel on multiple CPUs. I now switched to a 1440p monitor, and after recording some 1440p60 gameplay and putting on Youtube, it's hard to go back. x264 is a software library and command line application for encoding H. But you are not doing that. 5 x264 method and see if that helps performance. I can say with confidence that "lookahead" works by default for x264. mkv. fast_pskip=0 or no-fast-pskip=1 — slight quality increase; worth it IMO Jul 5, 2018 · x264 can use very little CPU to a lot of CPU, depending on which CPU preset you choose, as well as the bitrate you are attempting to encode at. " From MeGUI/x264 Settings, which basically concurs from similar statements I've seen made by x264 developers. : 12/18/2011 THEATRE DATE. If this is removed, x264 defaults to using multiple threads and sets param. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, and so, so much more. Note that the camera follows me a bit too much to the exclusion of the slides (in the video), so the most efficient way to move through these materials might be to just read the handout. 5x the number logical cores, and setting a lower number than this affects parallelization. x264, 1920x1080, 60fps, veryfast preset, high-detail low-motion scene: 2500kbps vs 3500kbps; 3500kbps vs 6000kbps; x264, 1920x1080, 60fps, veryfast preset, high-motion scene: 2500kbps vs 3500kbps; 3500kbps vs 6000kbps Sep 19, 2018 · sliced-threads: enables slice-based threading. 16倍速くなった。 aq-mode=3 aq-strength=0. I'd aim at somewhere in the 16-24 range. h file, it contains more or less the reference for each function and structure. to get a understanding of the new update what they primarily did is the frames that are being rendered from The site consists of untouched* PAL/NTSC DVDs, and top quality H. But I am not sure if this is time or space-optimized. Haswell Overclocking Guide [With Statistics] | Page 737 | Overclock. 2005 December 26 — x264 won Doom9's 2005 codec shoot-out, passing Ateme by a hair. But I don't see how using more threads could actually improve the result. To give you a bit Mar 5, 2016 · While normally we don't recommend doing this, I've seen a couple of situations where users have a lot of logical cores on their CPUs, x264 seems to spawn too many threads and you have to manually limit them. BluRay. I am still testing the most optimal number of b-frames to get the best quality. Kwaii. org encoders. For a typical TV show, in the old days people would use something like --tune film for x264 . Goal: Record HD mp4: 1 gig per hour, resolution: 1920 x 1080, Video Bitrate: 5000 Kbps, 30 FPS. 5x CPU threads, so if you have a 9900k with 16 threads, it would be 24. 786: [x264 encoder: 'streaming_h264'] x264 failed to load I notice in the larger log file some libraries fail to load. I used hardware encoding at first, but viewers complained its too blurry. You can manually select the number of threads to be created or, better, set threads=auto and let x264 detect how many CPUs are available and pick an appropriate number of threads. If you’re using 16 threads in task manager, you’re using at least 24 x264 threads. At 810p, you need 21 threads. Is the difference is too insignificant? or not? (Encoding time is irrelevant) threads 16, lookahead-threads 4 threads 12, lookahead Sep 25, 2017 · - reducing x264 threads with parameter "threads=12" - closing tools/services that are usually running while I play games - switch to high performance mode on windows energy options and nvidia control panel During my last tests, it always took 15-22min until the OBS preview began to show micro-stutter (and so does the recorded video). Comments and corrections are welcome. 이 설정마저도 아직 최적화를 다 못 했을 당시의 영상이니 차이가 그만큼 크다고 생각하면 되겠다. Your OBS is fine. To give you a bit Sep 28, 2022 · OS: Manjaro kernel 5. 57358/ and since you are using x264 only, I recommend you use only ffmpeg instead of OBS, because it's much easier to automate. The latter is a placebo option that's really, really slow, and seldom yields better results, so only use it if you don't care about encode time. You’re not accomplishing anything. Those are x264 worker threads, and not based off the actual core count, though my stream PC has a 3900x and I have found setting the worker threads to the number of CPU threads has given really good results. Sep 11, 2016 · 08:26:32. I can confidently say that no more than 2, the rest of the tests are different. To give you a bit I don't know about MeGui, but the command line option in x264 is "--threads #" where # is the number of threads you want to use, eg "--threads 24". 19. Probably not an option with the current GPU drought. A quick aside; higher thread counts degrades quality in both x264 and x265, although to a lesser extent with the latter, however, this is just a benchmark and quality doesn't matter. If I do not care about availibility on mobile phones or tablets can I just use high? 4 Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. Dec 2, 2017 · A program called "Process Hacker" can limit thread affinity on each threads which might help, but do note that x264 may use multiple threads. x264 then might create up to 2*N threads (exact number depends on many encoding parameters). I used autohotkey to automate OBS, but only to support Quicksync and nvenc that were not available Slice-based threads was the original threading model of x264. aq-mode: Adaptive Quantization Mode. Sep 25, 2017 · - reducing x264 threads with parameter "threads=12" - closing tools/services that are usually running while I play games - switch to high performance mode on windows energy options and nvidia control panel During my last tests, it always took 15-22min until the OBS preview began to show micro-stutter (and so does the recorded video). For those unfamiliar, it's the preferred test for the Haswell Overclocking Guide [With Statistics] because it has the distinct advantages of: Dec 7, 2016 · There is also one important caveat - this only applies to encoders which do their thread management via ffmpeg; libx264 doesn't do that - it forwards requested thread count to the x264 library which does its own thread management. And encoding like this I could see very blocky frames at the beginning of the encoded. So just let x264 choose the optimal number threads automatically. # encode using ultrafast preset, using one CPU thread to raw h. These are two polar opposites. By default, x264 sets the number of threads to 1. 264 / AVC developed by VideoLAN, the people behind the ever-popular VLC Media Player and released under GNU GPL. May 24, 2013 · Yes: don't use custom x264 settings if you don't know exactly what it does and what you are doing, even if some random person on the internet says "just do it, it will work great". The default preset is medium, which is what the other presets are compared against. And just for the fun of messing around. 2017-12-29 22-51-08. To give you a bit Jun 1, 2016 · If the default number of threads is actually 1. The reason EposVox likely set it to 16 is because x264 can only scale well to 20-24 threads for 1080p. Zero Latency Quality: threads=24 lookahead-threads=24 bframes=4 me=umh rc-lookahead=60 A note about the 'threads' flags. Lets say 16 threads finish in 4 ms, it can start working on the other threads before the frame needs to be exported. Jan 8, 2020 · In my testing, around 4 threads you can start to see a visual difference at low bitrates. 그렇다면 무작정 x264 코덱을 쓰면 될까? 그것도 아니다. To give you a bit For further reading see this excellent thread on Doom9. More threads adversely affects quality and compression ratio, but it's mostly negligible for threads 6 vs 14 at crf 17 . You are encoding many videos on a single processor. y4m), or Avisynth if compiled with support (yes). Plugin – x264. Mai 2020 um 18:54) aus folgendem Grund: I was wrong about how lossless mode works in x264, changed settings in lossless mode Turned merange down among all settings that makes it work as encoder design intended Added maximum useful usage, good quality setting Changed some settings Jan 16, 2022 · x264 scales fine - your first screenshot shows it's using 48 threads (threads * 1. Jan 1, 2007 · Not really. To give you a bit The general rule of thumb has been 1. Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. To give you a bit Aladdin (@din_x264) on Threads 109 followers Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. c file you can find in the download contains a sample implementation. May 2, 2020 · I managed to figure it out. The x264. I dont really mess with the other settings manually, except i set threads to 12. It was replaced with frame-based threads in r607. To give you a bit Jan 25, 2021 · Finalizing a setup for recording(no streaming) depositions on zoom with my MacPRO. I don't see any mention of "-threads 1" in any of the settings used which are provided near the end of the comparison PDFs. DTS. 667 ms between each frame. To give you a bit Sep 12, 2019 · -x264-params no-fast-pskip=1:lookahead -threads=3 pskip parameter is not required, I just wanted to include a multi parameter example I think there is another answer, something to do with loop but this works so please add to this solution if you have a more pure solution. This threading method produces lower quality results than the default method both compression and efficiency-wise, but adds no encoding latency. Too many x264 threads can hurt quality in constant bitrate mode and near-constant bitrate mode called VBV (video buffer verifier), due to increased encode delay. I tried to run ffmpeg to convert a video (MKV) to MP4 for Authors: – Josef Zlomek , Mark Nauwelaerts Classification: – Codec/Encoder/Video Rank – primary. i_threads = 1. and besides my CPU cooking on 90 Nov 10, 2017 · threads=0 is x264 default number of threads. 25:0. Example: ffmpeg -i input -c:v libx264 -preset slow -crf 22 -x264-params keyint=123:min-keyint=20 -c:a copy output. Also see output of x264 --fullhelp. x264 has two motion estimation algorithms worth using, umh and tesa. May 10, 2021 · Hello, I just got a new PC with a Ryzen 5950x and a radeon 6900 XT. None of that scene crap thats out of sync, contains banding, blocking, wrong luma levels, bad cropping, etc. Nor do I see any settings which would indirectly force 1 thread in either of the x264 and x265 settings used. More threads = more nvenc like poor quality X264 is really good in heavy detailed areas. It's measurable in metrics, and the filesize will be slightly different so you 'd have to so serial tests at 17. 6 subme=8 rc-lookahead=60 psy-rd=0. sout-x264-mvrange-thread <integer> : Minimum buffer space between threads default value: -1; sout-x264-subme <integer [1 . Legend. Gets a higher VMAF score than even veryslow preset and is just a tiny bit slower than medium. I don't think you want to force x264 to use 32 or 64 threads. To give you a bit By default, the ffmpeg -threads parameter will be set to half the number of logical CPU cores available to docker. Nowadays, x264 uses frame-based threading, by default. Encoder x264 Bitrate: 6M Keyframe: 1 CPU Preset: Slow Profile: High Tune: ? I've never used it, but if anything needs to be used let me know x264 Options: threads=32 lookahead_threads=32 rc_lookahead=80 vbv-bufsize=6M trellis=1 aq-mode=1 direct-pred=spatial Video----- Base: 1920x1080 Output: 1664x936 Downscale Filter: 36 May 8, 2020 · I did some comparison work in this thread: https://obsproject. 2011. To give you a bit lookahead thread count said to be like threads/6 (or threads/4 as I observed, either it is changed now or depends on other parameters) Among below 3 examples, which would give the better quality theoretically. Slice-based threads was the original threading model of x264. 5x of number of cores in the CPU automatically. 혹시 x264 cpu 방송하시는 분들은 어떤 cpu 사용하시나요? 10-20 램오버 적용해두시거나 하신건 아니죠? 04-27 인텔로 넘어가시는거 아니면 그냥 그대로 쓰시는게 낫지싶어요개인적으로 업글 체감 하시려면 CPU+보드 세트로 처분하고 12600k 가시는게 어떨까 싶네요 03-20 Jan 31, 2021 · In regard of thread control of the encoder itself, Hybrid offers for: x264: x264->Base->Threads; x264->Base->Sliced threads; x264->Rate Control->Lookahead threads Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. Nvenc, the encoder Nvidia GPUs provide, produces similar quality to that of x264 with a preset between medium and slow (with RTX 2xxx) and slightly better, up to slow, with the newer nvenc Dec 7, 2016 · There is also one important caveat - this only applies to encoders which do their thread management via ffmpeg; libx264 doesn't do that - it forwards requested thread count to the x264 library which does its own thread management. If you encoded using x264 Veryslow, 50000 bitrate, you will be using an insanely higher percentage of your CPU than if you were streaming at x264 Ultrafast, 500 bitrate. (But even with threads=1, ffmpeg still runs video encoding in a separate thread from audio + other stuff, and the main ffmpeg thread, so you might not want to force it to compete with itself for a single core. 5 times your CPU Threads as x264 encoder threads and having slightly more encoding threads than CPU threads, is good for balancing the load. Fong. Use a custom x264 command that says "threads=18" to fix this. After a while the video is ok. But there is no film tuning for x265. To give you a bit x264 can use CQ (constant quality) or CRF (control rate factor); I'm not sure what context you're referring to "quality" in your post, perhaps you put up some screen cap showing the export options. txt. Package – GStreamer Ugly Plug-ins Jul 22, 2012 · Thank you so much! In summary: sliceless or frame-based threading leads to lateny, because the whole pipeline has to be filled. This will give faster performance than running in single thread. Typically, you want about 1. Adding more threads does more harm than good. In any event, if you do that math on a 720p video (at 1 thread per 40 lines), you get 18 threads. The site consists of untouched* PAL/NTSC DVDs, and top quality H. Sep 8, 2014 · 5960Xでx264 --threadsのテスト やっと少し時間ができたので、Haswell-Eで少し実験。 今回は 前やったみたいに、 x264がスレッドをどのくらい有効に使ってくれるか試す。 May 24, 2022 · Settings For x264 Options: bframes=2 b-adapt=0 partitions=none scenecut=0 no-weight weightp=0 sliced-threads. Also, on certain testcases, I've seen more threads (say 4 threads on my dual core test machine) finishes quicker than the default. See full list on streaminglearningcenter. It is written in C and Assembly with almost two decades worth of development and threading optimizations which makes it the fastest software video encoder available, which also happens to be extremely popular. Attachments. May 15, 2022 · So you don't need to use -threads:v 1 or -x264-params "threads=1" with this, it seems; libx264 infers that. 6 days ago · Welcome to Mobilarian Forum - Official Symbianize forum. 11 Hardware: 5900X (PBO 170W) 32GB RAM 3600 1:1 5500XT 8GB 120Hz 1080p screen I have been experiencing poor video quality (recorded or streamed) for more than a year and regardless of the settings. whether x264 uses multiple threads per frame or not, if it does, shorter clips are probably okay as long as they are high resolution enough,. @Default x264 will create 1. x264 is wasting CPU time by opening 12 too many threads. The presets were created by the x264 developers and tweaking values to get a better output is usually a waste of time. However, some people might experience high CPU utilization, and other Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. Thanks for any tips on that x264 rev number 987 Mar 10, 2001 · 왜 대기업 스트리머 분들이 x264 세팅을 쓰고 좋은(다코어의) CPU를 가진 송출컴을 준비하는지를 알게 해준다. 2005 December 12 — x264 tied for 1st place (with Ateme) in the second annual MSU MPEG-4 AVC/ H. Obviously, x264 starts close to the front, x265 at around 28:21, and x265 4K starts at 36:50. If you want to reduce the quality loss, use one thread (Not Recommended, unless all other settings are already maxed) Jun 19, 2008 · The site consists of untouched* PAL/NTSC DVDs, and top quality H. To give you a bit I am aware the default -thread 0 follows one-thread-per-core approach which is supposed to be optimal. For example with 5 threads the encoding process starts if all 5 threads have one thread. – Mar 14, 2012 · The x264 encoder has the folowing options for "tuning": - default - film - animation - grain - psnr - ssim - fastdecode I'm assuming that these are optimisations based on the source input. Mar 8, 2011 · Is there a maximum number of threads to use when encoding with x264? I noticed that (not still sure it's the cause) that on a 24 cores using threads auto, 36 threads are used. x264 currently has an internal limit on the number of threads set at 128, realistically you should never set it this high. Jan 12, 2024 · You can improve the quality for x264 by choosing a slower preset, but this will increase your CPU usage, which might impact the thing you intend to stream. 3 b-frames are used. 264 codecs comparison. This is designed to approximate how much processing power you'd be able to give to x264 if you were performing encoding on the same machine as the game or application you are streaming. 000kbit/s). : 2011 iMDB 2010 May 25 — x264 won MSU Sixth MPEG-4 AVC/H.
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