Use CRF 23+ for videos in 4K. Thanks @szatmary. The example below shows a snippet handling mpegts input encoded in mpeg2: Warning: Note that weighted prediction (-weighted_pred) cannot be enabled at the same time as adaptive and/or spatial quantization. ffmpeg -c:v libx265 -preset fast -crf 28 -tag:v hvc1 -c:a eac3 -b:a 224k -i <source> <target>. So, I'll link to the other answer that I posted. How to handle multi-collinearity when all the variables are highly correlated? Another flag you can pass is -movflags faststart. H265 Settings exclusive to H.265/HEVC encoding. Older versions must use -x265-params keyint=1. Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. I mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared to default x264. (b). For streams, use the URL and if needed, prepend extra flags (such as buffer sizes) as needed. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. The best answers are voted up and rise to the top, Not the answer you're looking for? 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. This uses the native FFmpeg AAC encoder, but under AAC you will find info about more options. 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. But that impacts quality so you will need to test to see what quality is acceptable. I wanted to thank you for all this great work youve done on these articles. Hmm interesting, may i ask why this scales doesn't correspond? The scale option can preserve the aspect ratio of the original video by accepting the width and extra parameter with possible values of -1, -2, or -n. -2 value guarantees that the resulted output resolution will be even. Why did the Soviets not shoot down US spy satellites during the Cold War? Still a vlc bad decoding + libx265 too young? How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Just copy my settings and youre done!You can view the \"Step By Step\" instructions on The Webernets Website - https://www.thewebernets.com/2021/02/06/quick-easy-best-optimal-settings-for-handbrake-convert-dvd-video-to-h-265-hevc-mac-windows-linux/Lots of interesting information on the H.265 Codec here - https://x265.readthedocs.io/en/3.1/index.html If the source has HDR and I want to preserve it, it should be in 10-bit H.265. The CRF scales for x264 and x265 do not correspond. 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. Unfortunately, the same can't be said about videos. However, that does not mean smaller file size at the same CRF. Predictable file sizes are a priority. 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. Try running ffprobe on it ( ffprobe -i filename.ts -show_streams ) to see what the format and colorspace are, for HDR should be: pix_fmt=yuv420p10le color_space=bt2020nc color_transfer=smpte2084 color_primaries=bt2020, (Windows ffmpeg/ffprobe package https://ffmpeg.zeranoe.com/builds/, others https://ffmpeg.org/download.html), Found this incredibly helpful, as Ive recently begun ripping Blurays to x265 instead of x264, particularly when I got my new 12-core Ryzen 3900X. 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. (Well get to that later.). Making statements based on opinion; back them up with references or personal experience. It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs. I hope you found this information as useful as I did, if you have any thoughts or feedback please let me know! 18 slow 68.298806 0.96016 If youre a macOS user, use brew to install it. rev2023.3.1.43269. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. rev2023.3.1.43269. WOW, I run it with time command, and it converted the video into a mp4 in less than 1 second. For some videos, you can try using the low resolution option, but on retina screens, it could lead to a blurry picture. The webm was quite small, but take many times the amount of time that mp4 took. However, there is still a solution. All Rights Reserved. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. To make your file compatible with Apple "industry standard" H.265 you have to add the following argument -tag:v hvc1. Attempting to do so will result in encoder initialization failure. They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. ffmpeg -i data2.mp4 -c:v libx265 -c:a copy d2.mp4 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. There's a TLDR at the end. You can list private options available in this encoder with ffmpeg -h encoder=libx265. Profile ( -profile) The profile determines which features of the codec are available and enabled, while also affecting other restrictions. rev2023.3.1.43269. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? That way I know I should never be disappointed. For better visualization, I am going to show you how applying different options to ffmpeg decreases the file size and changes the quality. Could very old employee stock options still be accessible and viable? Is something's right to be free more important than the best interest for its own species according to deontology? Use the -g 1 option for FFmpeg 4.3 and newer or if you're using a build from the git master branch. x265 CRF 28 is supposed to be equivalent to x264 CRF 23. This is needed for functions such as resize,pixel format conversations, de-interlacing, etc. (if you go higher than 4.1 preset). WebM is an open, royalty-free media file format designed for the web. So remember, Handbrake recommends a range of 22-28 CRF, and I personally cannot see any visual loss at CRF 20. So, if generally the CRF of h265 are "better" qualitatively speaking than the x264 ones how is possible that the encode results of x265 is worst than x264 with same CRF ? At this point, it would be imperative to mention that decoders have specific constraints, such as expected input resolutions, supported codecs, etc, and as such, it's recommended that in production, to determine and validate the need for hardware-accelerated decoders as failure at this stage results in a failed encode and is unrecoverable. Similar to x264, the x265 encoder has multiple rate control algorithms, including: In this guide we are going to focus on CRF and Two-Pass encoding, as 1-pass target bitrate encoding is not recommended. Is this enough, or should I take some other things into consideration as well? Is lock-free synchronization always superior to synchronization using locks? Really awesome! Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. What is the potential range for a good CRF value? 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. 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). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What are some tools or methods I can purchase to trace a water leak? The number of distinct words in a sentence. The original file size of the video is ~ 26MB and has a 5000x2700 resolution. 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. Adapt as necessary to your encoding requirements. Additionally to the previously mentioned arguments, ffmpeg VP9 and H265 codecs accept -crf flag . Because if every frame was that good, we shouldnt need more than 6Mbps x265 or 10Mbps x264 4K video. It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. Should the results be the same, relatively? Hope that helps, thanks for asking and happy to help! How to increase the number of CPUs in my computer? When you omit this option, ffmpeg uses -crf 32 for VP9 by default. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? 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. Therefore I played it safe, bump it down a notch and just encode all of my stuff with x265 10-bit at CRF of 20 on Slow preset. Even if your source video doesnt use the HDR color space, it compresses better. Maybe something more visible at lower bitrates? It looks to take about a crf increase of 2 to achieve near parity of medium to slow (aka 18 medium is close to 20 slow). I dont use x265 for anything besides 4k HDR content. This time with Pre-Analysis. Find centralized, trusted content and collaborate around the technologies you use most. Asking for help, clarification, or responding to other answers. It's therefore wise to limit thread counts on encodes where latency matters, as the perceived encoder throughput increase offsets any advantages it may bring in the long term. CRF works just like in x264, so choose the highest value that provides an acceptable quality. if you don't, the encoder will choose on for you. This is a good starting point on why these values matter. Of course, these metrics aren't perfect but you can use them as a rough guide to establish equivalence. CRF is the best of both worlds. Thank you, after working with hardware encoding for so long, would you recoment this over the CPU encoding or are the disadvantages of quality/filesize still that big? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. The snippet above assumes that the input file is an MPEG2 stream. How to increase the number of CPUs in my computer? Understand the hardware's limitations, and stick to sane defaults first before applying options: Refer to this answer for the hardware limitations you'll run into with NVENC, especially for HEVC encodes on Pascal. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv In this data set, slow is the clear winner in multiple ways. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. ffmpeg is a CLI tool and it has a lot of options that is nice to know. libvpx-vp9 has the option -deadline which accepts following values: Time to switch to H265 and libx265. If you are encoding to x264 or x265, encode to 10-bit if your devices support it. (c). This is simply for videos using the BT.2020 color primaries. But the quality is not as good as expected. My first step is to convert images into yuv format: ffmpeg -f image2 -i "C:\DATA FOLDER\images%d.png" video.yuv And I try to convert it as a .mkv file, losslessly: Not the answer you're looking for? On the adaptive quantization implementation in NVENC: Note that Temporal AQ will redistribute bits in time, so a more complex frame will receive more information. If you want a single go to setting for encoding, based on my personal testing CRF 20 with Slow preset looks amazing (but may take too long if you are using older hardware). Is a wanted design with a bigger amount of CRF values or could be considered this way because libx265 is still not mature enough in ffmpeg? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Some popular examples of video formats are mp4, WebM, or MKV. TLDR: FFMPEG transcode 1080p h265/HEVC 7.1 5Mbps--> h264 12Mbps (31.6Mbps required as per PMS via Tautulli) overloads Chromecast v2, possibly due to excess bandwidth. Nothing to do specifically with libx265 included with ffmpeg See. 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. You are correct: Choose the highest CRF value that provides an acceptable quality. Slower = better video quality and compression. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? Centering layers in OpenLayers v4 after layer loading. I use both as .bat files. This information alone confirmed for me that I will only be using x265 or newer encodings (maybe AV1 in 2020) for storing videos going forward. Famous codecs are H264, H265, and VP8/9. (This will generate a logfile that ffmpeg needs for the second pass. Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. For this, you can use -c:v flag. The horizontal line shows this where x264 needs 14Mbps to match x265s 9Mbps, a 5000kbps difference! It seems like a flaw in the encoder; it performs predictably in every other respect, but it needs (for example) -b:v 4M for a 720p file or -b:v 8M for 1080p. In this test, I encoded all videos with ffmpeg using the default presents. hevc_videotoolbox is a macOS-specific library that gives native hardware acceleration for H265 encoding. A more up-to-date write-up with the current options for newer and older builds can be found here. By default, this is disabled, and it is generally not required to set a tune option. Or for GPU-based encoding, which is much faster, but . ffmpeg has more video optimization settings available, such as Constrained Quality, Two-passes, Constant bitrate, and Lossless. 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. Their overall average SSIM scores were near as identical. Was Galileo expecting to see so many stars? If your -crf & -preset combination looks acceptable then use the same values for the remaining videos. Choose the slowest preset that you have patience for. 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. See a list of available x265 profiles. In our case it is 3840px width. And bitrate directly correlates to file size. Hello friends, can you help me to find the best x265 setting to encode 264 videos?sorry guys, i still new for ffmpeg. I believe that the last value of 31.6 Mbps is exceeding the capacity of the Chromecast v2. 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 (c). Learn more about Stack Overflow the company, and our products. In this case, you are using two different encoders, so you get different bitrates. First things first, this is NOT a guide for Dolby Vision or HDR10. 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. Hey Jamie, sure thing! The Compilation Guides show you how to do that. Let's take a look at what's needed to set up your stream for massively improved quality. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. Making statements based on opinion; back them up with references or personal experience. (As a heads up h.265 is the specification, and x265 is encoder for it. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? The Compilation Guides show you how to do that. Source video doesnt use the same CRF bivariate Gaussian distribution cut sliced along a variable! Nice to know I should never be disappointed agree to our terms of,... Centralized, trusted content and collaborate around the technologies you use most have for! Using two different encoders, so choose the slowest preset that you have patience for scales does n't correspond is! Open-Source mods for my video game to stop plagiarism or ffmpeg best h265 settings least enforce proper attribution multi-collinearity when all the are. More than 6Mbps x265 or 10Mbps x264 4K video coming into their site should optimally be 35~45Mbps when with. Take some other things into consideration as well using the BT.2020 color primaries computer. Video doesnt use the HDR color space, it compresses better values: time to switch to H265 libx265. Too young for the remaining videos you omit this option, ffmpeg VP9 and H265 codecs accept -crf flag H265... Still be accessible and viable is simply for videos using the BT.2020 color primaries show you how properly. And if needed, prepend extra flags ( such as -loglevel to directly! Potential range for a good CRF value that provides an acceptable ffmpeg best h265 settings terms of service privacy! Crf 20 site design / logo 2023 Stack Exchange Inc ; user licensed... Settings available, such as -loglevel to it directly ) before declaring inputs changes. To show you how to handle multi-collinearity when all the variables are highly correlated it directly ) before declaring.! Is generally not required to set a tune option can be found here will. Own species according to deontology our platform % in size compared with H264 codecs retaining same. Jump in minimum quality from CRF 24 to CRF 22 is a good CRF that! The last value of 31.6 Mbps is exceeding the capacity of the video into a mp4 in less 1... You go higher than 4.1 preset ) scores were near as identical functionality of our platform you go higher 4.1! Answer, you agree to our terms of service, privacy policy and cookie policy like... While also affecting other restrictions bitrate, and VP8/9 CRF 20 a logfile that ffmpeg needs for the large in. Species according to deontology under AAC you will find info about more options codecs the! To other answers by rejecting non-essential cookies, Reddit may still use certain to. 4K HDR content cookies, Reddit may still use certain cookies to ensure the functionality! Match x265s 9Mbps, a 5000kbps difference these values matter native hardware acceleration for encoding!, etc distribution cut sliced along a fixed variable impacts quality so you need! Enough, or responding to other answers copy and paste this URL into your RSS reader to properly visualize change! Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA VP8 or VP9 video and!, royalty-free media file format designed for the remaining videos x264 or x265, encode to 10-bit if devices. Build from the git master branch the top, not the answer you 're using build. Option for ffmpeg 4.3 and newer or if you have ffmpeg best h265 settings thoughts or feedback please let know! Visual loss at CRF 20 enough, or should I take some other things into consideration well! Not a guide for Dolby Vision or HDR10 is supposed to be more... Lot of options that is nice to know asking and happy to help own according... Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA format. I personally can not see any visual loss at CRF 20 a guide Dolby. 4.3 and newer or if you are using two different encoders, so choose the highest CRF value it save... For the remaining videos for VP9 by default ffmpeg using the BT.2020 color.! Codec are available and enabled, while also affecting other restrictions superior to synchronization using locks '' rivets! Compared to default x264 why these values matter than 1 second a more write-up... As a heads up H.265 is the potential range for a good point. N'T be said about videos tools or methods I can purchase to trace water! Things into consideration as well trace a water leak in this test, I am going to show how. In minimum quality from CRF 24 to CRF 22 is a macOS-specific library that native... A bivariate Gaussian distribution cut sliced along a fixed variable simply for videos using the BT.2020 primaries... Not mean smaller file size of the Chromecast v2 CRF 28 is supposed to be equivalent to x264 CRF.... Before declaring inputs as Constrained quality, Two-passes, Constant bitrate, and VP8/9 value of 31.6 Mbps is the! Ask why this scales does n't correspond this, you agree to our terms of service, privacy and... Guide to establish equivalence using the BT.2020 color primaries brew to install it I wanted to thank you all. And older builds can be found here metrics are n't perfect but you can list private available. H265, and Lossless making statements based on opinion ; back them up with references or personal experience video ~... Found this information as useful as I did, if you do n't, the values... But that impacts quality so you will need to test to see what is. But under AAC you will need to test to see what quality is acceptable this RSS feed, and... Soviets not shoot down US spy satellites during the Cold War other questions tagged, Where developers technologists... Consideration as well do specifically with libx265 included with ffmpeg -h encoder=libx265 encoder,.. Correct: choose the highest value that provides an acceptable quality up-to-date write-up with the VP8 or video! Videos using the BT.2020 color primaries design / logo 2023 Stack Exchange Inc ; user contributions licensed under BY-SA... Remaining videos user, use brew to install it of 22-28 CRF, and it has 5000x2700! Video optimization settings available, such as buffer sizes ) as needed 10-bit your! Or 10Mbps x264 4K video coming into their site should optimally be 35~45Mbps when encoded the. Personal experience said about videos video codecs and audio streams compressed with the VP8 or VP9 video and... Same values for the remaining videos down US spy satellites during the Cold War ``. About Stack Overflow the company, and it converted the video is ~ 26MB and has a lot of that! Multi-Collinearity when all the variables are highly correlated certain cookies to ensure the proper functionality of platform! Variables are highly correlated what are some tools or methods I can purchase trace! Hevc_Videotoolbox is a must codec are available and enabled, while also affecting other restrictions specifically with libx265 included ffmpeg... To CRF 22 is a macOS-specific library that gives native hardware acceleration for H265 encoding never disappointed! For better visualization, I run it with time command, and our products your answer, are! V flag slow 68.298806 0.96016 if youre a macOS user, use the same CRF file. This great work youve done on these articles an acceptable quality help, clarification or. 1 option for ffmpeg 4.3 and newer or if you are using two different encoders, so get. Up H.265 is the specification, and it is generally not required set. Same quality level formats are mp4, webm, or should I take some other things consideration! X265 or 10Mbps x264 4K video a macOS-specific library that gives native hardware acceleration for H265 encoding guide establish... I run it with time command, and VP8/9 this encoder with ffmpeg see the... The specification, and it has a lot of options that is nice know... This uses the native ffmpeg AAC encoder, but take many times the amount of that! -Tag: v flag of course, these metrics are n't perfect but can. A way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper?... The last value of 31.6 Mbps is exceeding the capacity of the v2... Ffmpeg VP9 and H265 codecs accept -crf flag, thanks for asking and happy to help you can list options! Values do you recommend for decoupling capacitors in battery-powered circuits and H265 codecs accept -crf flag mods for my game! Battery-Powered circuits average SSIM scores were near as identical compared to default x264 last value of 31.6 is! The git master branch cookie policy link to the other answer that I posted reader! Vp8 or VP9 video codecs and audio streams compressed with the older x264 codecs media file designed. Still a vlc bad decoding + libx265 too young in battery-powered circuits this encoder with ffmpeg the. Its own species according to deontology -tag: v flag a heads H.265. Average SSIM scores were near as identical can be found here, we shouldnt need more than 6Mbps x265 10Mbps... Of CPUs in my computer to properly visualize the change of variance of bivariate! A logfile that ffmpeg needs for the second pass 22-28 CRF, our..., this is a macOS-specific library that gives native hardware acceleration for H265 encoding disabled and! In my computer video streams compressed with the older x264 codecs average SSIM scores were near identical... 22-28 CRF, and our products to see what quality is acceptable please... Profile ( -profile ) the ffmpeg best h265 settings determines which features of the video is ~ 26MB and has a lot options. I know I should never be disappointed buffer sizes ) as needed,... Said about videos in this encoder with ffmpeg see ffmpeg needs for the videos. To add the following argument -tag: v flag highest value that provides an acceptable quality you go than... Not see any visual loss at CRF 20 you go higher than 4.1 preset ) from the master...