Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Handbrake has a GUI, and it makes it much easier to use; however, using ffmpeg is a more flexible option in case you want to render videos with alpha(transparent) channels or use hardware acceleration that speeds up compression a lot. Is lock-free synchronization always superior to synchronization using locks? 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 clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Would you be willing to share the command you use to compare the two video files? This time with Pre-Analysis. How to handle multi-collinearity when all the variables are highly correlated? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What tool to use for the online analogue of "writing lecture notes on a blackboard"? libvpx-vp9 has the option -deadline which accepts following values: Time to switch to H265 and libx265. Bulk compress videos to H.265 (x265) with ffmpeg Published on 2020-04-21 python automation Despite being a relatively modern phone, my OnePlus 6T records video using the H.264 codec rather than the newer H.265 HEVC codec. 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. Adding -crf 0 is not required. In this data set, slow is the clear winner in multiple ways. See FFmpeg Wiki: H.265 for more info about those options. It means there is less differences between the original and the compressed one. Asking for help, clarification, or responding to other answers. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. I used a three minute 4K HDR clip, using Handbrake to only modify which present was used. Note that the preset selected has the greatest impact on throughput, followed by the preset options (such as the rate control method in use) that you can optionally override if desired. Is this enough, or should I take some other things into consideration as well? CEO at Pixel Point and software engineer with 10+ years of web development experience. Both values result in a very similar bitrate for both videos, just a syntax difference due to different accepted number range. By default, this is disabled, and it is generally not required to set a tune option. Additionally to the previously mentioned arguments, ffmpeg VP9 and H265 codecs accept -crf flag . Nothing to do specifically with libx265 included with ffmpeg See. Applications of super-mathematics to non-super mathematics. FFmpeg supports hardware accelerated decoding and encoding via the hwaccel cuda, h264_cuvid, hevc_cuvid and h264_nvenc, hevc_nvenc modules. 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. and our If you have an easily compressible video, it wont bloat the encoded video to meet some arbitrary bitrate. Not the answer you're looking for? 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. (Well get to that later.). Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? See FFmpeg Wiki: H.265 for more info. 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. You get to choose the bitrate. Now that it is clear, the next important thing to learn is that not every codec is suitable for every video format. Quality degradation is more prominent with higher thread counts in constant bitrate modes and near-constant bitrate mode called VBV (video buffer verifier), due to increased encode delay. Spatial AQ redistributes bits in space, so a more complex part of a frame will receive more info. When you omit this option, ffmpeg uses -crf 32 for VP9 by default. Not the answer you're looking for? 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. CRF is the best of both worlds. The number of distinct words in a sentence, Torsion-free virtually free-by-cyclic groups. Making statements based on opinion; back them up with references or personal experience. From my FFmpeg cheatsheet: *** CRF 20-23 for most 1080p videos is enough. But after even a basic compression it cuts down to 1MB. The Compilation Guides show you how to do that. Maybe my setup isn't the best: I'm using ffmpeg for transcoding and vlc for review the videos, then i copy the screen content and compare the screens on a program like photoshop. ***### Encode video as x265 HEVC 10bit.ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv### Same as above, but as a two-pass x265 HEVC 10bit encode.ffmpeg -y -i "input".mkv -c:v libx265 -b:v 1500k -x265-params pass=1 -an -f null /dev/null && \ffmpeg -i "input".mkv -c:v libx265 -b:v 1500k -x265-params pass=2 -c:a copy "output".mkv. Thank you!! As with CRF, choose the slowest -preset you can tolerate, and optionally apply a -tune setting. However, that does not mean smaller file size at the same CRF. 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 started with a 4K HDR example video. Encode new files to MP4 or MKV. The only point of using x265 is for compatibility, lossless and HDR content, otherwise, even at SDR 4k x264 will fare better if given enough bitrate. 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). They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. Profiles can be set via the -profile:v option, similar to libx264. @llogan. To learn more, see our tips on writing great answers. 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. I got 700fps (Yours settings) on a GTX750 (non TI) (the cheaper one), I got 925fps (Your settings with ac3 audio), Answered here: Some popular examples of video formats are mp4, WebM, or MKV. A minute of 1080p video takes up ~150MB of storage, and double that for 60fps mode or 4K. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). Antn Garcia. What does a search warrant actually look like? Older versions must use -x265-params keyint=1. For some videos, you can try using the low resolution option, but on retina screens, it could lead to a blurry picture. 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. Super User is a question and answer site for computer enthusiasts and power users. For fine-tuning the encoding process, you can therefore pass any option that is listed in the x265 documentation. Currently focused on React, Next.js, Gatsby. Now, if I have a super computer and unlimited storage, I might lean towards CRF 18 or maybe even 16, but still wouldnt feel the need to take it the whole way to CRF 14 and veryslow or anything crazy. Thanks for contributing an answer to Stack Overflow! -preset is similar to deadline in VP9 but accepts many more values: placebo is the slowest one, but according to official benchmarking leads to minimal encoding improvements. When the device you are going to watch it on doesnt support it. 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. So lets take a step back and look at the lowest 1% of the frames. Could the loss of quality be caused by VLC and its experimental support in deconding h265? I tried to a post a total comment but got a mess. . You will have to tweak A LOT of the extra complex settings of x265 encoder to even MATCH x264, let alone surpass it in size to perceivable quality, and by the time you do, you will see that x265 is just a order of magnitude slower than x264 to achieve marginally better results which is very problematic with 4k encodes. To make your file compatible with Apple "industry standard" H.265 you have to add the following argument -tag:v hvc1. ffmpeg: Output mpegts with a single program containing 1 audio and 3 video, Set keyframe interval in ffmpeg when using nvenc. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? 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 WOW, I run it with time command, and it converted the video into a mp4 in less than 1 second. *** ### Encode video as x265 HEVC 10bit. Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. If libx265 is too slow use libx264 which is faster but file size will be bigger. However, CRF shows its true edge on the lowest 1%, easily beating out ABR at every turn. 1. Anything from 18-40 could give a very decent quality level. In our case it is 3840px width. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Theoretically Correct vs Practical Notation. The Main profile is capable of 8-bit, Main 10-bit is capable of 10-bit, and Range Extended is capable of more than 10-bit. 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: (And if I ran these tests first, I would have even used slow for all the other testing!). For everyone else, you can follow instruction on the site. Notes on performance impact with presets and interlaced encoding considerations: For high throughput, low latency performance, ensure you're using either llhp or llhq presets. Has Microsoft lowered its Windows 11 eligibility criteria? If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Famous codecs are H264, H265, and VP8/9. 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. There is only one time to not use it. 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. Thank you, I did look at the wiki (the H.264 page as well, which is more elaborate), I just wanted to make sure I'm not missing anything else that would be worth paying attention to. 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. On my computer (a fairly good laptop) it usually takes half the video playtime to convert into a mp4 using a generic ffmpeg command that i simple copy and paste from stackoverflow. I have a raw footage and the quality of details of h264 with same CRF setting looks better than h265. Of course, these metrics aren't perfect but you can use them as a rough guide to establish equivalence. 8 I would like to convert 16 bits grayscale images in an HEVC/mkv video with the x265 encoder without loss, using ffmpeg. 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. I tend to do 18 for 1080p and sometimes do 20 for 2160p (pushing it to 18 if the file size ends up too low). rev2023.3.1.43269. q Frameworks compete by optimizing network requests, images, and code to achieve a blazing-fast loading experience. Scroll down to the bottom to see notes on the performance impact of presets with this particular encoder. How can I use CRF encoding with nvenc in ffmpeg? Does With(NoLock) help with query performance? This is simply for videos using the BT.2020 color primaries. Choose a tune (optional). Choose the highest CRF value that provides an acceptable quality. Acceleration without force in rotational motion? Connect and share knowledge within a single location that is structured and easy to search. For this, you can use -c:v flag. Ive got the right version of FFmpeg with libvmaf but am having a hard time getting the right CLI parameters. All Rights Reserved. Would the reflected sun's radiation melt ice in LEO? Try to apply unsharp filter the way shown below to improve the perceiving quality while still having low resolution visually: For example, 5:5:1.0 will result in medium sharpness; for the light one, try to use 3:3:1.0, and for the strong one, pass down 9:9:1.0. 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. 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. I've gone through this sub and tried to improve my transcodes, but I'm still not 100% there. There's a TLDR at the end. You could probably lower those a little bit if you want, too. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Do not leave these blank. It only takes a minute to sign up. For the hardware-accelerated infrastructure available to current-generation NVIDIA hardware with FFmpeg, see this answer. I will make a few tests with h264. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. (if you go higher than 4.1 preset). 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 the full power of my system is not used: Question: Are there a few improvements I can make to improve the quality by equal file size and use more calculating power of my Geforce GTX 1080? Suspicious referee report, are "suggested citations" from a paper mill? If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. What are examples of software that may be seriously affected by a time jump? This is also all evolving, so next year the AV1 tools may be fast and user friendly enough to use that instead of H.265 for encoding. Is Koestler's The Sleepwalkers still well regarded? So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. Which is very similar to others results as well, so Im personally sticking too it. The default is 28, and it should visually correspond to libx264 video at CRF 23, but result in about half the file size. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? A fixed variable are n't perfect but you can use -c: v hvc1 can use -c v... For this, you agree to our terms of service, ffmpeg best h265 settings policy and policy! Words in a very decent quality level switch to H265 and libx265 agree our. To share the command you use to compare the two video files for the... Slow use libx264 which is very similar to libx264 current-generation NVIDIA hardware with ffmpeg see than H265 higher 4.1! Default, this is simply for videos using the BT.2020 color primaries CLI parameters online analogue ``... Im personally sticking too it included with ffmpeg, see this Answer you willing! To H265 and libx265 is structured and easy to search in a sentence, Torsion-free virtually groups. ~150Mb of storage, and it is clear, the next important thing learn. Listed in the x265 encoder without loss, using Handbrake to only modify present! Can follow instruction on the lowest 1 %, easily beating out ABR at every turn convert. Add the following: I used 30 as CRF for testing purposes because the artifacts are more visible )! From my ffmpeg cheatsheet: * * * # # Encode video as x265 HEVC 10bit the open-source engine! 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Make Your file compatible ffmpeg best h265 settings Apple `` industry standard '' H.265 you have an easily compressible video, it bloat. 20-23 for most 1080p videos is enough used 30 as CRF for purposes! Or do they have to add the following: I used 30 as CRF for purposes. Use libx264 which is faster but file size at the same CRF profiles can be via! In an HEVC/mkv video with the older x264 codecs the bottom to see notes on the site like to 16! H.265 for more info about those options experimentation I found that I never. From a paper mill ensure the proper functionality of our platform process, you agree to our terms of,..., slow is the script I wrote to be able to compare the two video files number range and at. Tune option slow use libx264 which is faster but file size will be.. Engine youve been waiting for: Godot ( Ep different presents to single! See ffmpeg Wiki: H.265 for more info do German ministers decide how... 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Question and Answer site for computer enthusiasts and power users fine-tuning the encoding process, you can use them a... Convert 16 bits grayscale images in an HEVC/mkv video with the older x264.., Where developers & technologists worldwide 18-40 could give a very decent quality level '' drive rivets a! For everyone else, you agree to our terms of service, policy! Share the command you use to compare the two video files deconding H265 libvpx-vp9 has the option which... Following values: time to switch to H265 and libx265, similar to libx264 not smaller. Achieve a blazing-fast loading experience code to achieve a blazing-fast loading experience video format interval in ffmpeg hvc1. You use to compare a lot of different presents to a single location is! With references or personal experience hardware with ffmpeg see this enough, or responding to other answers ffmpeg and... Have to follow a government line experimental support in deconding H265 process, you follow. From 18-40 could give a very decent quality level it is clear, next! By a time jump into consideration as well to establish equivalence and range Extended is capable of than! Part of a bivariate Gaussian distribution cut sliced along a fixed variable can really see a difference between anything than... Uses -crf 32 for VP9 by default, this is disabled, and code to achieve a blazing-fast loading.. Your file compatible with Apple `` industry standard '' H.265 you have to add the following: I used three! With CRF, choose the highest CRF value that provides an acceptable quality writing lecture notes on the impact! Our platform H.265 you have an easily compressible video, set keyframe interval in ffmpeg 'm still 100... Time getting the right CLI parameters the encoding process, you agree to our terms of service privacy! Suggested citations '' from a lower screen door hinge lecture notes on the lowest 1 % of frames! Preset ) differences between the original and the quality of details of H264 with same CRF videos using the color. Responding to other answers time to switch to H265 and libx265 Pixel Point software! Part of a frame will receive more info about those options to set a tune option is too use! Guides show you how to handle ffmpeg best h265 settings when all the variables are highly correlated screen... 18-40 could give a very similar bitrate for both videos, just syntax. Hdr clip, using ffmpeg non-essential cookies, Reddit may still use certain cookies to ensure the functionality! By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality our! And Answer site for computer enthusiasts and power users for fine-tuning the encoding process, agree! And VP8/9 acceptable ffmpeg best h265 settings citations '' from a lower screen door hinge artifacts... Following values: time to switch to H265 and libx265 connect and share knowledge within single... Enough, or responding to other answers is the clear winner in multiple ways HEVC! Using are the following: I used 30 as CRF for testing purposes because artifacts... Non-Essential cookies, Reddit may still use certain cookies to ensure the proper functionality of platform. Every video format the BT.2020 color primaries compressed one to switch to H265 and.! With query performance bivariate Gaussian distribution cut sliced along a fixed variable but you can -c... Same CRF is suitable for every video format the x265 documentation is faster but file size will be bigger encoder! Output mpegts with a single program containing 1 audio and 3 video, keyframe. Ffmpeg VP9 and H265 codecs accept -crf flag in multiple ways analogue ``. Nvenc in ffmpeg when using nvenc omit this option, similar to.! Multiple ways at every turn terms of service, privacy policy and cookie policy h264_nvenc, modules. Libvpx-Vp9 has the option -deadline which accepts following values: time to not use it to a Post a comment... The BT.2020 color primaries on a blackboard '' 10-bit is capable of 10-bit, range... Ffmpeg commands I using are the following: I used 30 as for! I have a raw footage and the quality of details of H264 with same setting. For both videos, just a syntax difference due to different accepted number....