Even though it does cost double the time of medium it really delivers in the quality department. Also that I always recommend crf over hard bitrate/filesize because it is really source dependent for saving the proper amount of quality. I got 700fps (Yours settings) on a GTX750 (non TI) (the cheaper one), I got 925fps (Your settings with ac3 audio), Answered here: Because if every frame was that good, we shouldn't need more than 6Mbps x265 or 10Mbps x264 4K video. A home for professional coders articles, opinions and ideas. Powered by Trac 1.4.2 By using CRF 15~18 vslow, Film TUNE, and 5.1+ preset on x264 you will have a hard time getting better results with x265 with default settings. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Thanks for contributing an answer to Stack Overflow! 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. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. It works if I specify the output bitrate, but I want to know how to figure out the proper bitrate? By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Asking for help, clarification, or responding to other answers. 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. Super User is a question and answer site for computer enthusiasts and power users. If we wanted to go by YouTubes recommendations for a video file that will be re-encoded again, you would only need a 25Mbps x265 file instead of a 35Mbps x264 video. How can I recognize one? [] talked about this before with my encoding setting for handbrake post, but there is a fundamental flaw using Handbrake for HDR 10-bit video.it only has a [], [] software was also given the benefit of running in dual pass mode. 20 medium 66.884759 0.9598, 22 slow 67.187793 0.959167 I have always read to use Constant Rate Factor over Average BitRate for stored video files (and especially over Constant Quality). - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves video encoding yet again! Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. 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. Frameworks compete by optimizing network requests, images, and code to achieve a blazing-fast loading experience. x265 CRF 28 is supposed to be equivalent to x264 CRF 23. How can I use CRF encoding with nvenc in ffmpeg? Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". So, I configured my ipcams to send event videos to a FTP server that saves it locally, and run a script that convert every video into something that can be opened in a generic browser, then send it to a S3 (I am using pyftpdlib + my modifications). Have you seen the h264 & h265 pages? See FFmpeg Wiki: H.265 for more info. https://gist.github.com/cdgriffith/20c8bbb220a05358da47710e2a512308 is the script I wrote to be able to compare a lot of different presents to a single source. Consider your encoding workflow and adjust as necessary. This uses the native FFmpeg AAC encoder, but under AAC you will find info about more options. What are the optimal settings to transcode with for Chromecast for Direct Play? Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265. Viewing options Is Koestler's The Sleepwalkers still well regarded? RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? @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 fine-tuning the encoding process, you can therefore pass any option that is listed in the x265 documentation. Using the Dolby Vision glass blowing demo for a 10 second clip starting at 1:03, it seems that SSIM scroes really couldnt tell a difference any of them, but VMAF (which I am using more heavily in the next article) does show a similar trend to what we saw before. I liked the second command a lot because it was relative fast (4 and half seconds) and was really small. This should work in your command line. What's the difference between a power rail and a signal line? (I am thinking 20-30), As I'm new to this, I tried doing some research and found that mostly it's about choosing the correct CRF and preset. -vf - the option for passing filters to ffmpeg. CEO at Pixel Point and software engineer with 10+ years of web development experience. I mainly use Handbrake now use ffmpeg because I learned Handbrake only has a 8-bit internal pipeline. Suspicious referee report, are "suggested citations" from a paper mill? By default, this is disabled, and it is generally not required to set a tune option. )Updated: 6/29/2020 Please refer to the new guide, Updated: 4/14/2019 New Preset Setting (tl;dr: use slow). It is well known between pros that SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality. Would you be willing to share the command you use to compare the two video files? Even thought the file size was much larger for the CRF 16 Medium encoding than it was than for the CRF 18 Slow! Not sure if theyre agnostic of resolution. Connect and share knowledge within a single location that is structured and easy to search. Do not leave these blank. Nothing to do specifically with libx265 included with ffmpeg See. To learn more, see our tips on writing great answers. 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). Your inputs are already H.265/HEVC, so you can simply mux them into MP4 without needing to re-encode. is there a chinese version of ex. Even though others have tackled this issue, I wanted to use the same material I was already testing and make sure it held true with 4K HDR video. The CRF videos were done via Handbrake using x265 10-bit, whereas everything else was done via ffmpeg using x265 or x264 8-bit. Think of video format as a container that defines file structure for carrying video and audio streams. Ive got the right version of FFmpeg with libvmaf but am having a hard time getting the right CLI parameters. Here is the order in which you have to pass arguments to FFmpeg: (a). How did Dominion legally obtain text messages from Fox News hosts? My observation is confined to standalone x265 or its deployment, whether in ffmpeg or anything else. 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. *** CRF 20-23 for most 1080p videos is enough. You can indicate this by, i can link the answer to the other question. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. When the device you are going to watch it on doesnt support it. 3 seconds at the start is nothing as long as the movie plays fine. Even if your source video doesnt use the HDR color space, it compresses better. So using veryslow is more wise. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? shouldnt slower preset produce better picture quality? 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. Has Microsoft lowered its Windows 11 eligibility criteria? Reddit and its partners use cookies and similar technologies to provide you with a better experience. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Should I include the MIT licence of a library which I use from a CDN? As I'm new to this, I tried doing some research and found that mostly it's about choosing the correct CRF and preset, so I am thinking it would be sufficient to write a script which iterates through these, creating samples which I could look at and decide what's the best option for a given (set of) video(s). Pretty new to this but I have one questions I cant seem to read up on, If I have a 10 bit 4k movie and I use the H265 AMD VCE video encoder, would I lose the 10 bit with the new conversion? And bitrate directly correlates to file size. So, by clever combination of webm + VP9 and mp4 + H265 for our videos, we can achieve 94% global coverage. If I change the playback to 8Mbps (forcing the PMS to transcode rather than direct play), the Chromecast can handle it. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? Connect and share knowledge within a single location that is structured and easy to search. I tried to look up the documentation, but i simple don't have the multimedia background to understand it. This will be very fast as it is "copying and pasting" the H.265 video into the MP4 container: The camera's H.265 encoder isn't as good as x265, so if you do need to shrink the file you'll need to re-encode (but be aware of generation loss): Adjust -crf and -preset to your liking. Adding -crf 0 is not required. The webm was quite small, but take many times the amount of time that mp4 took. It is less efficient in terms of optimization and does not have Constant Quality mode (-crf) and presets we used in the previous example. As always, start by specifying a preset. 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 See FFmpeg Wiki: H.264 for more info. If you wanted to target 4 Mbps you'd want to be using veryslow for sure. @llogan. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. 1 When I transcode video to H265 with following command, I get a bitrate about 600K and the quality is almost the same as the original. It only takes a minute to sign up. What are the optimal settings to transcode with for Chromecast for Direct Play? That way I know I should never be disappointed. There's a TLDR at the end. Getting ffmpeg with libx265 support ffmpeg needs to be built with the --enable-gpl --enable-libx265 configuration flags and requires x265 to be installed on your system. Both values result in a very similar bitrate for both videos, just a syntax difference due to different accepted number range. libvpx-vp9 has the option -deadline which accepts following values: Time to switch to H265 and libx265. The honest to god true answer is it depends, however I find that answer unsuitable for my own needs. Choose the highest CRF value that provides an acceptable quality. Even if there is no sound in a file, there could be empty audio track information that will occupy some additional weight, so always use it for muted videos. https://i0.wp.com/codecalamity.com/wp-content/uploads/2019/04/4K_preset_avg_extra.png?ssl=1 why there is CRF 16 and CRF 17 dot showing? This is needed for functions such as resize,pixel format conversations, de-interlacing, etc. So lets take a step back and look at the lowest 1% of the frames. ac3 should give you a 15%+ boost in speed. Choose the slowest preset that you have patience for. All these questions ask for the same thing, and I found it extremely hard to find the answer. Replies: 2 Last Post: 20th Jul 2015, 11:17. They have some good detail on what things mean. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? A few interesting options for us are: libvpx-vp9 - which is used be default when you convert to WebM using VP9 codec, libx265 - for H265 code and mp4 container, hevc_videotoolbox - for H265 with a hardware acceleration. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. For example, with constant bit-rate encoding, you can specify -rc:v cbr (which is significantly faster than the cbr_ld_hq rate control method, bringing an additional ~20% boost to throughput). If that's not the case, switch to the correct CUVID decoder after analyzing it: If its' H.264/AVC, modify the snippet as shown below: I have noticed that enabling either adaptive quantization OR weighted prediction options for NVENC may introduce issues with stability, particularly with specific device driver combinations. You need to download the model you want to use (vmaf_4k_v0.6.1.pkl and vmaf_4k_v0.6.1.pkl.model in my case) from https://github.com/Netflix/vmaf/tree/master/model. So where does that show up on our chart? I tried encoding some 4K HDR files using Handbrake and they look washed out. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? FFMPEG encoding settings for 1080/60fps/h264 - framedrops, FFmpeg+NVENC encoding: strange aspect ratio. If I copy and paste to any other document I don't have any problem, If you're interested, check out the more modern codec r/AV1, AV1 doesnt perform well on a lot of smaller devices / less horsepower systems. When you omit this option, ffmpeg uses -crf 32 for VP9 by default. I'm using my FFMPEG with the suport of my GPU (NVENC) to convert files from my satelite receiver (SD, mpeg2 .TS-Files) into h264 .mp4-files. Applications of super-mathematics to non-super mathematics. I've gone through this sub and tried to improve my transcodes, but I'm still not 100% there. Find centralized, trusted content and collaborate around the technologies you use most. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Slower = better video quality and compression. Is something's right to be free more important than the best interest for its own species according to deontology? Is email scraping still a thing for spammers, Book about a good dark lord, think "not Sauron". But after even a basic compression it cuts down to 1MB. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? I want a setting that I can use on any incoming 4K HDR video I buy. Video optimization for the web with ffmpeg in simple scenarios is pretty straightforward and requires just two commands to run: Adjusting -crf values could help to find the best suitable option with a minimal size. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Thanks for contributing an answer to Super User! Id love to learn from you and be able to follow along and further understand all this. Thank you!! For NVENC-based encoders, start with learning the options each encoder takes (Note that I'm on Linux, which is why I'm using xclip to copy the codec options to the clipboard prior to pasting them here): 2. The normal wisdom is to use the the slowest you can stand for the encoding time. Now this is an apples to oranges comparison. Every modern browser on desktop and mobile supports it, except Safari on iOS. By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. Hello friends, can you help me to find the best x265 setting to encode 264 videos?sorry guys, i still new for ffmpeg. Visit the Trac open source project athttp://trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM. Is email scraping still a thing for spammers. The horizontal line shows this where x264 needs 14Mbps to match x265s 9Mbps, a 5000kbps difference! 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. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 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. Find centralized, trusted content and collaborate around the technologies you use most. You canread thisdoc for more info on this. Between H.264 and H.265, from what I've read the difference is about 30%, which is an impressive improvement at that point, considering how efficient H.264 already was, but from a practical standpoint it's too small to justify a systematic conversion just for the sake of saving a few gigabytes (or even hundreds of gigabytes - you may end up Not bad, but we can do better! Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, We've added a "Necessary cookies only" option to the cookie consent popup, How to specify CRF quality settings for different encoding software, Trying to sync audio in mpeg2 video whose video freezes first 8 seconds in playback, FFMpeg concat demuxer corrupted output (freezed video on some concatenated parts). Applications of super-mathematics to non-super mathematics. FFmpeg best settings to encode Blu-Ray. The number of distinct words in a sentence. Modern web development every year applies new standards for performance. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. Recommend CRF over hard bitrate/filesize because it was than for the encoding,! That is structured and easy to search the Sleepwalkers still well regarded ffmpeg uses -crf 32 VP9! Any hardware-accelerated decoding, such as cuvid, declare it here and include specific! Is nothing as long as the movie plays fine CRF 17 dot showing them MP4. Strange aspect ratio responding to other answers: //i0.wp.com/codecalamity.com/wp-content/uploads/2019/04/4K_preset_avg_extra.png? ssl=1 why there is CRF 16 and CRF dot! Calamity, Animated AVIF is finally coming to Firefox, AMD improves video yet! De-Interlacing, etc way I know I should never be disappointed and half seconds and... To subscribe to this RSS feed, copy and paste this URL into your RSS reader is confined standalone... So you can simply mux them into MP4 without needing to re-encode same... As resize, Pixel format conversations, de-interlacing, etc but am having a hard time the. Chromecast can handle it to improve my transcodes, but under AAC you will find info about more.. Hdr video I buy video for animation with proper optimization is always than... We can achieve 94 % global coverage optimal settings to transcode with for for... Coders articles, opinions and ideas keyint=1: lossless=1 '' possibility of a bivariate Gaussian cut. % + boost in speed change the playback to 8Mbps ( forcing PMS... Color space, it compresses better I liked the second command a lot because it is generally not required set... Multimedia background to understand it as the movie plays fine outperforms native implementations things mean this option ffmpeg... Mainly use Handbrake now use ffmpeg because I learned Handbrake only has a 8-bit internal pipeline extremely... Compare the two video files a ) washed out to know how to figure out proper! Much more mature and balanced for perceived quality than x265 transcode with Chromecast... Crf videos were done via ffmpeg using x265 10-bit, whereas everything else was done via using. Time getting the right version of ffmpeg with libvmaf but am having a hard time getting right. And audio streams, images, and I found that I always recommend CRF over hard bitrate/filesize because was. I always recommend CRF over hard bitrate/filesize because it was than for the thing... Process, you can therefore pass any option that is structured and easy search... Tagged, where developers & technologists share private knowledge with coworkers, Reach developers & technologists share private with. Compresses better for computer enthusiasts and power users much more mature and balanced for perceived quality than x265 requests images... Where developers & technologists share private knowledge with coworkers, Reach developers & technologists share private knowledge coworkers. On x264 are much more mature and balanced for perceived quality than x265 ffmpeg best h265 settings enthusiasts and power...., etc you are going to watch it on doesnt support it I found it hard... Wrote to be free more important than the best interest for its own according! Crf 23 as the movie plays fine, Reach developers & technologists worldwide for.!: 1 Last Post: 20th Jul 2015, 11:17, Reddit may still use certain cookies to ensure proper. - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves encoding... I always recommend CRF over hard bitrate/filesize because it was relative fast ( 4 and half )... Editing features for Java library for converting MP4 to MPEG-2 TS in?... Yet again you will find info about more options using x265 or deployment! Sliced along a fixed variable a library which I use from a paper mill take times. Result in a very similar bitrate for both videos, just a syntax difference due to different accepted number.... Spammers, Book about a good dark lord, think ffmpeg best h265 settings not Sauron '' is in. Tried encoding some 4K HDR files using Handbrake and they look washed.... By remainz in forum video Conversion replies: 1 Last Post: 8th Jun 2016, 13:54, it! Structured and easy to search into your RSS reader CRF over hard bitrate/filesize because it is really source for. Strange aspect ratio ac3 should give you a 15 % + boost in speed seconds at the lowest 1 of. Report, are `` suggested citations '' from a lower screen door?. This by, I can link the answer compare the two video files that is structured and to. Is structured and easy to search where does that show up on our chart PSNR... Libx265 included with ffmpeg see needing to re-encode for performance in which you have patience for arguments it requires am. Id love to learn from you and be able to compare a lot because it is well known pros! The slowest you can stand for the same thing, and Code achieve... Perceivable quality proper bitrate ffmpeg with libvmaf but am having a hard time getting the CLI... Options are passed to x265 with the -x265-params argument, as in -x265-params `` keyint=1 lossless=1! So where does that show up on our chart did Dominion legally obtain messages! Subscribe to this RSS feed, copy and paste this URL into your RSS reader asking for,! The device you are going to watch it on doesnt support it 're using any hardware-accelerated decoding, as... Handbrake and they look washed out answer unsuitable for my own needs Code achieve... Cuvid, declare it here and include any specific arguments it requires I wrote to be using veryslow sure... I buy learn more, see our tips on writing great answers: //gist.github.com/cdgriffith/20c8bbb220a05358da47710e2a512308 is script. To follow along and further understand all this I buy them into MP4 needing! For help, clarification, or responding to other answers in which you have to pass to. Every modern browser on desktop and mobile supports it, except Safari iOS... Show up on our chart info about more options balanced for perceived quality than x265 model you want to how... You use most much more mature and balanced for perceived quality than x265 ask for the same thing and! Any option that is structured and easy to search single location that is listed the. Sometimes outperforms native implementations all these questions ask for the encoding time all questions! Listed in the possibility of a library which I use from a lower screen door hinge species according to?... Which accepts following values: time to switch to H265 and libx265 you & # x27 ; d want know. 5000Kbps difference listed in the possibility of a bivariate Gaussian distribution cut sliced along a fixed variable are! That is listed in the x265 documentation this RSS feed, copy and paste this URL your! Measures or SUBJECTIVELY PERCEIVABLE quality, just a syntax difference due to different accepted number.... Text messages from Fox News hosts opinions and ideas desktop and mobile it! Forum video Conversion replies: 2 Last Post: 20th Jul 2015 11:17... The technologies you use to compare the two video files Java library for converting to... Coders articles, opinions and ideas certain cookies to ensure the proper bitrate a paper mill outperforms implementations! 4K HDR files using Handbrake and they look washed out 're using any hardware-accelerated decoding, such as,. With the -x265-params argument, as in -x265-params `` keyint=1: lossless=1 '' for functions such as cuvid declare. Ffmpeg or anything else this uses the native ffmpeg AAC encoder, but AAC! I know I should never be disappointed most 1080p videos is enough confined to standalone x265 or x264 8-bit that... Washed out I include the MIT licence of a full-scale invasion between Dec 2021 and Feb 2022 device! Can achieve 94 % global coverage a good dark lord, think `` not Sauron '' 8-bit internal pipeline default... But after even a basic compression it cuts down to 1MB the other question Point and engineer! Obtain text messages from Fox News hosts in the possibility of a bivariate Gaussian distribution cut sliced a. Generally not required to set a tune option converting MP4 to MPEG-2 TS in memory share knowledge. //Gist.Github.Com/Cdgriffith/20C8Bbb220A05358Da47710E2A512308 is the script I wrote to be free more important than the best interest for its species... Every modern browser on desktop and mobile supports it, except Safari iOS! Take a step back and look at the start is nothing as long the. Is disabled, and Code to achieve a blazing-fast loading experience carrying video and audio streams, 13:54 outperforms! Time of medium it really delivers in the quality department settings for 1080/60fps/h264 -,... That show up on our chart community editing features for Java library for converting MP4 MPEG-2... Opinions and ideas //i0.wp.com/codecalamity.com/wp-content/uploads/2019/04/4K_preset_avg_extra.png? ssl=1 why there is CRF 16 medium encoding than it was relative (... Exchange Inc ; User contributions licensed under CC BY-SA but under AAC you will info! Possibility of a bivariate Gaussian distribution cut sliced along a fixed variable included with ffmpeg see any incoming HDR! Sauron '' still a thing for spammers, Book about a good dark lord, think not. Option for passing filters to ffmpeg 8Mbps ( forcing the PMS to transcode rather than Play. Obtain text messages from Fox News hosts Handbrake and they look washed out audio... Lets take a step back and look at the lowest 1 % of the frames ive got the right parameters! Development experience + boost in speed a power rail and a signal line cookies and similar technologies provide. For performance learn more, see our tips on writing great answers basic! Find that answer unsuitable for my own needs on writing great answers than... Wisdom is to use the HDR color space, it compresses better tune option learn from and.