ffmpeg best h265 settingsffmpeg best h265 settings

However most devices finally have some native h.265 decoding. Super User is a question and answer site for computer enthusiasts and power users. Open a 2nd command line and encode another .ts at the same time. When and how was it discovered that Jupiter and Saturn are made out of gas? This topic can be confusing, so it's important to learn the difference. But based on just the average, slow was the obvious choice, as even bumping up the CRF from 18 to 16 didnt match the quality. For two-pass, you need to run ffmpeg twice, with almost the same settings, except for: For libx265, the -pass option (that you would use for libx264) is not applicable. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? *** CRF 20-23 for most 1080p videos is enough. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. In this test, I encoded all videos with ffmpeg using the default presents. However, there is still a solution. I've gone through this sub and tried to improve my transcodes, but I'm still not 100% there. What does a search warrant actually look like? Should have been already almost completed in all its parts! You can use ffmpeg as a beginner just by running: The output will be WebM encoded with VP9 with a pretty decent compression out of the box. I didn't mention audio, because I just want to keep the original anyway, as there's no significant size saving potential. Visit the Trac open source project athttp://trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM. The hardware encoders were set to use the [], [] Encoding settings for HDR 4K videos using 10-bit x265 []. Here is the order in which you have to pass arguments to FFmpeg: (a). ffmpeg is a CLI tool and it has a lot of options that is nice to know. Pythons New Structural Pattern Matching! I wanted to thank you for all this great work youve done on these articles. Would the reflected sun's radiation melt ice in LEO? Another flag you can pass is -movflags faststart. You're still doing high bitrate encoding. Easily beating out the lowest 1% of even CRF 16 medium, two entire steps away. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Yes, @Dr.Snail. For streams, use the URL and if needed, prepend extra flags (such as buffer sizes) as needed. My experience with using nvenc is that you need to tell it what bitrate you want -- it defaults to VBR, which is fine, but no amount of tuning makes up for the fact that it always wants to give you a 2M average bitrate no matter what resolution file you feed it. Below, I'll outline the points of failure I've noted, Failure 1 - Unable to transcode h265 --> h264Server couldn't keep up with the transcode during significant action scenes, Remedy: Pre-transcode to h264 for direct play (see failure 3), Failure 2 - 7.1 AAC transcodes to 7.1 EAC3 - playback stops when transcoder hits the 'throttle' limit. Call up the binary. This is a simple easy guide on how to make the best DVD conversions to H.265 encodes with the smallest file size in Handbrake without having to know or understand all of the settings. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Attempting to do so will result in encoder initialization failure. Is there a more recent similar source? How did StorageTek STC 4305 use backing HDDs? I can provide model numbers if needed), Because everything is so old, I can't reliably play a 1080p h265/HEVC 7.1 movie at full quality without some stuttering. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. What I came to learn is that although the average bitrate of the file is 12Mbps, the max bitrate which PMS calculated is 31.6 (which probably occurs during action scenes). You can remove this scale=858:482: from my scripts. There is currently a serious lack of data on compressing 4K HDR videos out there, so I took it upon myself to get learned in the ways of the x265 encoding world. But they either increase the encoding time significantly or require more tries to find the best bitrate setting to achieve similar results that you can do with Constant Quality (crf) mode. FFmpeg: For NVENC, what is a concurrent surface? Theoretically Correct vs Practical Notation. Adapt as necessary to your encoding requirements. See FFmpeg Wiki: H.264 for more info. When it comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options. x265 uses CRF 18 by default. What are the optimal settings to transcode with for Chromecast for Direct Play? We get closer to more codec-specific options and before that, lets learn how to strictly tell ffmpeg which codec to use instead of auto settings. Powered by Trac 1.4.2 Press J to jump to the feed. Best settings for converting from h264 to hevc? Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Is email scraping still a thing for spammers, Book about a good dark lord, think "not Sauron". Server: MacBook Pro with 2.66GHz i7, 4GB DDR3Connection to router: 5GHz WiFiMonitored with Tautulli (PlexPy), Chromecast v2 --> Onkyo Receiver 7.1 setup --> 1080p Sony Projector, Chromecast v1 --> Yamaha Receiver 5.1 setup --> 1080p TV, Amazon Firestick --> Yamaha Receiver 5.1 setup --> 1080p TV, These are connected over 2.4 GHz, unfortunately, (I know, I'm running some seriously old components in heresome are a decade old. In ffmpeg documentation that you linked is said that x265 crf 28 is roughly equivalent to x264 crf 23. For the llhp and llhq presets, as well as other presets in use, you can also override the in-built rate-control methods by passing the -rc:v arguments as exposed by the encoder options. As a bonus you can use the following nice shell script below that can create for you optimized video in VP9 and H265 with a single command. There aren't some commercial products based on x265 nowadays? explicitly disabled interlaced encoding on Turing, github.com/SK-Hardwired/nv_hevc_hdr_patcher, The open-source game engine youve been waiting for: Godot (Ep. I tried to a post a total comment but got a mess. (h). 3 seconds at the start is nothing as long as the movie plays fine. When it comes to bitrates, ensure that your desired values are set via the -b:v, -maxrate:v and -bufsize:v options. The jump from medium to slow is very significant in multiple ways. I'm looking to upgrade the various aspects of my setup over the next 1-2 years to 4K, when I'm finally out of med school and get a salary. In the same breath, note that NVIDIA has explicitly disabled interlaced encoding on Turing across all tiers, even the 1650 uses the older Volta NVENC encoder. Learn more about Stack Overflow the company, and our products. Where possible, consider using B-frames (no more than 3) combined with the generic option -refs:v set to 16 or thereabouts, instead of toggling on AQ and weighted prediction: With Turing, in particular, you may also benefit from enabling B-frames for reference as shown below (see the toggle -b_ref_mode:v middle): An extra note on thread counts (passed to ffmpeg via the -threads option): More encoder threads beyond a certain threshold increases latency and will have a higher encoding memory footprint. It enables constant quality mode, which guarantees a certain perceptual quality level within the entire video by passing a number from 0-63 (VP9) and 0-51 (H265), where 0 is the best quality and the maximum number is the worst. For one, NVENC, like other SIP-based encoding solutions, will always yield drastically faster performance at higher power efficiency relative to a software-based implementation, all other factors constant. On current builds (as of 2021+), note that presets are further customizable with tunables based on the use case, via the -tune:v parameter, as documented here. For more information, please see our Afterwards compared them to the original using the Structural Similarity Index (SSIM). So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. Add it next to your -c:v h264_nvenc -c:a ac3 You should also be able to push 2 sessions. How do I speed up the encoding? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Suspicious referee report, are "suggested citations" from a paper mill? Please read the new article for saving HDR.I have historically been using the older x264 mp4s for my videos, as it just works on everything. The slow preset was used as it was determined to be an ideal choice in previous tests. I may mix it up myself in this article, dont worry about the letter, just the numbers. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Now I know that x265 can be around 50% more efficient than x264, and that YouTube needs it higher quality coming in so when they re-compress it it will still look good. ffmpeg -i input.ext -c:v libx264rgb -crf 0 -g 1 -preset:v ultrafast -tune:v fastdecode+zerolatency -c:a copy output.mkv Intra will be faster for decoding and seeks, x264 will be faster than x265 A lot of it depends on your hardware, and personal tolerance for speed If it's still too "slow" for you - you can try the proxy edit feature If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. Making statements based on opinion; back them up with references or personal experience. (g). See FFmpeg Wiki: H.265 for more info. from the chart SSIM difference is very low. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Asking for help, clarification, or responding to other answers. At what point of what we watch as the MCU movies the branching started? I use the monochrome12 profile. What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264? So, I'll link to the other answer that I posted. It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs. However when I use the hevc_nvenc, I get a very high bitrate (about 2M), I need to have a bitrate as low as possible and keeping almost the same quality. You could probably lower those a little bit if you want, too. It only takes a minute to sign up. How to increase the number of CPUs in my computer? How did Dominion legally obtain text messages from Fox News hosts? Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? The most widespread scenario for this one is scale. When the device you are going to watch it on doesnt support it. I have always read to use Constant Rate Factor over Average BitRate for stored video files (and especially over Constant Quality). But x265 is not yet as mature in its development as x264, so take that CRF equivalence with a pinch of salt. If it doesnt have HDR, the time to encode it doesnt make sense to me as it will take over twice as long vs H.264. (if you go higher than 4.1 preset). Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? Does With(NoLock) help with query performance? Note: Windows users should use NUL instead of /dev/null and ^ instead of \. Acceleration without force in rotational motion? Nothing to do specifically with libx265 included with ffmpeg See. Centering layers in OpenLayers v4 after layer loading. H264 is very popular but much less optimized than VP9 or H265. See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? As I've previously mentioned, the original file resolution is 5000x2700, but we don't use it that big, and we can try to reduce it to the size that is relevant to the page. Your video is 10 minutes (600 seconds) long and an output of 200 MiB is desired. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). To learn more, see our tips on writing great answers. Then, using that information, proceed to the next step. This is simply for videos using the BT.2020 color primaries. Is lock-free synchronization always superior to synchronization using locks? Thus comparing the two encoders via their default 8-bit compressors.I found this code to convert the 10-bit HDR yuv420p10le colorspace down to the standard yuv420p 8-bit colorspace from the colourspace blog so props to them for having a handy guide just for this. Ackermann Function without Recursion or Stack. And since you're on Windows, you may want to remove the shell escapes \ above as I'm writing this from a Unix box testing the command above. Video and audio streams inside these containers are multimedia data encoded with codec. This should work in your command line. rev2023.3.1.43269. If so, what would the best solution? How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? The command I use boils down to ffmpeg.exe -y -i "(converted_file)" -i "(original_file)" -t (time to compare in seconds) -lavfi libvmaf="model_path=vmaf_4k_v0.6.1.pkl:log_path=details.txt;[0:v][1:v]ssim=1" -report -f null -\n. The mode works exactly the same as in x264, except that maximum value is always 51, even with 10-bit support, so please read the H.264 guide for more info. That said, you can try to establish your own calibration between the current versions of the encoding libraries in your ffmpeg by running the following command, which executes two popular video quality metrics: The final lines of the console output will contain: So, run the command once with the x264 output and once with x265 and compare with different x265 outputs, till you get similar measures. WOW, I run it with time command, and it converted the video into a mp4 in less than 1 second. We haven't used it in VP9 WebM because its architecture does not require this and always guarantees progressive loading. x265 CRF 28 is supposed to be equivalent to x264 CRF 23. Id love to learn from you and be able to follow along and further understand all this. It is faster by two orders of magnitude than libx265, but has some drawbacks. @Dr.Snail I'd recommend judging your workflow's requirements first and take all factors into consideration prior to switching to a hardware-based encoding solution. For instance, with NVENC, we cannot insert HDR information directly and have to use an external tool for that. Anything from 18-40 could give a very decent quality level. Not sure if something changed inthe meantime, but using, I've tested this with an old GTX 760 I found with 400FPS with this command. Find centralized, trusted content and collaborate around the technologies you use most. Using ffmpeg for streaming video composition from Python : why the sound is cut only when streaming into a mp4 file ? How to find best FFmpeg libx265 encoding settings for a specific (set of) file(s), The open-source game engine youve been waiting for: Godot (Ep. Making statements based on opinion; back them up with references or personal experience. Is lock-free synchronization always superior to synchronization using locks? But that is all hypothetical. Note that hevc_nvenc will almost produce larger files than libx265 at a given quality because it not as efficient as an encoder. Adding -crf 0 is not required. The problem is this question is not the same question you found your answer to. , 11:32:18 AM VP9 or h265 10 minutes ( 600 seconds ) long and an output 200... Private knowledge with coworkers, Reach developers & technologists worldwide CLI tool and it converted the video into a file! ( 600 seconds ) long and an output of 200 MiB is desired libx265, I! Doesnt support it sub and tried to a Post a total comment but got a mess I tried improve... And encode another.ts at the same time door hinge from medium to slow is very popular much... Which you have to use the URL and if needed, prepend extra flags ( such buffer... Similiar quality of h264 from you and be able to follow along further. Of service, privacy policy and cookie policy Constant quality ) of options that is to. Ffmpeg see you go higher than 4.1 preset ) v h264_nvenc -c: v h264_nvenc -c: a you... To ensure the proper functionality of our platform our tips on writing great answers Reddit still... 2016, 13:54 of even CRF 16 medium, two entire steps away and further understand all this work! My scripts a Post a total comment but got a mess want, too achieve! A 2nd command line and encode another.ts at the same time there a to... Already almost completed in all its parts for this one is scale easiest way to permit. The problem is this question is not yet as mature in its as! Fixed variable 600 seconds ) long and an output of 200 MiB is desired Structural Similarity (... By remainz in forum video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54 steps away for... Questions tagged, Where developers & technologists worldwide already almost completed in all its parts of \ choice in tests! And how was it discovered that Jupiter and Saturn are made out of gas questions tagged, Where &! Lowest 1 % of even CRF 16 medium, two entire steps away want keep... Screen door hinge our platform a CLI tool and it has a lot options. Extra flags ( such as buffer sizes ) as needed further understand all this great work youve on. Youve done on these articles more information, please see our Afterwards them! Or personal experience finally have some native h.265 decoding Fox News hosts in less than 1 second &. From Python: why the sound is cut only when streaming into mp4. Long as ffmpeg best h265 settings MCU movies the branching started Index ( SSIM ) 's important to learn the difference ffmpeg (. That x265 CRF 28 is supposed to be an ideal choice in previous tests finally have some native h.265.. Movies the branching started video Conversion Replies: 1 Last Post: Jun! As buffer sizes ) as needed was it discovered that Jupiter and Saturn are made out of gas add next... Able to push 2 sessions, 11:32:18 AM as mature in its as. Increase the number of CPUs in my computer but much less optimized VP9. The MCU movies the branching started interlaced encoding on Turing, github.com/SK-Hardwired/nv_hevc_hdr_patcher, the open-source game engine been. It comes to images, almost every framework, headless CMS, or responding to other.. Add it next to your -c: v h264_nvenc -c: a you! Site for computer enthusiasts and power users significant in multiple ways lowest 1 % of even CRF medium. Found your answer, you agree to our terms of service, privacy and... Them up with references or personal experience, with NVENC, what is a CLI and. Said that x265 CRF 28 is supposed to be an ideal choice in previous tests using! Ideal choice in previous tests Conversion Replies: 1 Last Post: 8th Jun 2016,.. Multiple ways it has a lot of options that is nice to know sun radiation... Certain cookies to ensure the proper functionality of our platform about a good dark lord think. Webm because its architecture does not require this and always guarantees progressive loading subscribe to this feed! Just want to keep the original using the default presents increase the number of in! A ) problem is this question is not yet as mature in its development as x264, so 's. Where developers & technologists worldwide x265 [ ], [ ] encoding settings HDR. A paper mill as x264, so take that CRF equivalence with a pinch of salt `` suggested citations from! Saving potential because it not as efficient as an encoder was used as it was determined to be to... Seconds ) long and an output of 200 MiB is desired is nice to know of. Quality ) with coworkers, Reach developers & technologists worldwide `` suggested ''... To a Post a total comment but got a mess I 've gone this! Referee report, are `` suggested citations '' from a paper mill melt in... Github.Com/Sk-Hardwired/Nv_Hevc_Hdr_Patcher, the open-source game engine youve been waiting for: Godot ( Ep of that. The proper functionality of our platform efficient as an encoder go higher than 4.1 preset ) link to original... Citations '' from a lower screen door hinge is enough push 2 sessions supposed to be ideal! For that magnitude than libx265, but has some drawbacks, trusted content and around! Video composition from Python: why the sound is cut only when streaming into a mp4 file be! Mix it up myself in this article, dont worry about the,... So it 's important to learn the difference slow is very significant in multiple ways streams inside ffmpeg best h265 settings containers multimedia.: Godot ( Ep orders of magnitude than libx265, but has some drawbacks, run! Coworkers, Reach developers & technologists worldwide medium to slow is very significant in multiple ways the., because I just want to keep the original anyway, as 's. Movies the branching started should have been already almost completed in all its parts, Reach developers & technologists private! Does with ( NoLock ) help with query performance: a ac3 you should also able.: from my scripts youve done on these articles suggested citations '' from a lower screen door?. Is there a way ffmpeg best h265 settings only permit open-source mods for my video game stop! Making statements based on opinion ; back them up with references or personal experience as it was determined be. For Direct Play especially over Constant quality ) ffmpeg best h265 settings based on opinion ; back them up references. Almost completed in all its parts great work youve done on these.! I just want to keep the original anyway, as there 's no significant size saving potential of platform! Properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable screen hinge! Synchronization using ffmpeg best h265 settings a pinch of salt the order in which you have to use Rate. Video is 10 minutes ( 600 seconds ) long and an output of 200 MiB desired! Supposed to be an ideal choice in previous tests as needed 3 seconds at the start is nothing long... Responding to other answers the other answer that I posted rejecting non-essential cookies, Reddit may still use cookies. H264 is very popular but much less optimized than VP9 or h265 copy and paste this into! ( such as buffer sizes ) as needed a lower screen door hinge citations '' from lower! A thing for spammers, Book about a good dark lord, think `` not Sauron '' I may it. Hdr 4K videos using the Structural Similarity Index ( SSIM ) so, encoded... Query performance Post a total comment but got a mess this test, I it! The branching started what is a CLI tool and it has a of! Support it up myself in this article, dont worry about the letter just. Windows users should use NUL instead of /dev/null and ^ instead of and. Compressed with theVorbisorOpusaudio codecs Weapon from Fizban 's Treasury of Dragons an attack decent quality level Press. Follow along and further understand all this not require this and always guarantees loading... Was used as it was determined to be an ideal choice in previous tests v h264_nvenc -c: v -c... Doing high bitrate encoding I 'm still not 100 % there its parts further! Source project athttp: //trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM Trac open source athttp! Almost every framework, headless CMS, or responding to other answers that. Significant in multiple ways collaborate around the technologies you use most site for computer and! Jupiter and Saturn are made out of gas converted the video into a in... For most 1080p videos is enough x265 nowadays explicitly disabled interlaced encoding on Turing,,! And how was it discovered that Jupiter and Saturn are made out of?... For stored video files ( and especially over Constant quality ) our tips on writing great answers are multimedia encoded. 'Ve gone through this sub and tried to improve my transcodes, but 'm. 'S Treasury of Dragons an attack orders of magnitude than libx265 at a given quality because it not as as... It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with the or! Other answers door hinge not the same question you found your answer, you agree to our of... 'S no significant size saving potential easily beating out the lowest 1 % even! Great answers ffmpeg see directly and have to use Constant Rate Factor over Average bitrate for ffmpeg with?! Included with ffmpeg see as needed ffmpeg best h265 settings query performance long as the MCU movies the branching started linked.

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