When the device you are going to watch it on doesnt support it. Modern video codecs can deliver excellent quality while preserving a very reasonable size. I tried H.265 10 bit, H.265 12 bit, and H.264 10 bit, and they all ended up looking washed out compared to the original file. Making statements based on opinion; back them up with references or personal experience. Even if your source video doesnt use the HDR color space, it compresses better. 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. How to handle multi-collinearity when all the variables are highly correlated? Epic! 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). Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). Ive got the right version of FFmpeg with libvmaf but am having a hard time getting the right CLI parameters. That way I know I should never be disappointed. To this, apply a speed to quality trade-off as expected, then weigh in on unsupported features. To learn more, see our tips on writing great answers. 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. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv (e). They have some good detail on what things mean. It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. hevc_videotoolbox is a macOS-specific library that gives native hardware acceleration for H265 encoding. What would be the most time effective format and how to convert a raw h.265 video to it? Most time effective web format for converting h.265, The open-source game engine youve been waiting for: Godot (Ep. Thanks for contributing an answer to Super User! Modern web development every year applies new standards for performance. 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? You probably want to use a constant quality factor by setting -crf to a value between 0 (Great quality large file) to 51 (bad quality small file). Is email scraping still a thing for spammers. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. So lets take a step back and look at the lowest 1% of the frames. The honest to god true answer is it depends, however I find that answer unsuitable for my own needs. Theoretically Correct vs Practical Notation. Think of video format as a container that defines file structure for carrying video and audio streams. 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. 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. It only takes a minute to sign up. Find centralized, trusted content and collaborate around the technologies you use most. 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. The results were surprising to me to be honest, I was expecting medium to have a better margin between fast and slow. At both CRF 24 and CRF 22, even the lowest frames dont dip below SSIM 0.95. Would the reflected sun's radiation melt ice in LEO? This is most useful for workloads such as live streaming where broader compatibility with a wider variety of devices is expected, and as such, performance crippling features such as B-frames can be omitted altogether for a good trade-off between higher bit-rates in use and throughput. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Is email scraping still a thing for spammers. But that is all hypothetical. What are the optimal settings to transcode with for Chromecast for Direct Play? Choose the slowest preset that you have patience for. However, there is still a solution. PTIJ Should we be afraid of Artificial Intelligence? Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. In our case it is 3840px width. Zero-delay or sliced thread mode has no delay, but this option farther worsens multi-threads quality in supported encoders. Pythons New Structural Pattern Matching! Is something's right to be free more important than the best interest for its own species according to deontology? How did StorageTek STC 4305 use backing HDDs? 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 FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. See a list of available x265 profiles. I hope you found this information as useful as I did, if you have any thoughts or feedback please let me know! hevc_nvenc option information. ac3 should give you a 15%+ boost in speed. The SSIM result is done frame by frame, so we have to average them all together to see which is best overall. Its a very efficient library but, unfortunately, does not use hardware acceleration, so the encoding takes a lot of time. Could very old employee stock options still be accessible and viable? I'm doing some experiments with HEVC x265. At what point of what we watch as the MCU movies the branching started? 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). It also wont be constrained to that limit if the video requires a lot more information to capture the complex scene. I use both as .bat files. So, by clever combination of webm + VP9 and mp4 + H265 for our videos, we can achieve 94% global coverage. Put simply, the closer the result is to 1 the better. All tests run using one of the animations we've made for a recent project. The number of distinct words in a sentence. How to increase the number of CPUs in my computer? For H265, we need to learn some more extra options. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Remedy: Set the "transcode default throttle buffer" limit to 18000 seconds (fixed issue), Failure 3 - Transcoded h264 file's bandwidth exceeds chromecast capability. The CRF scales for x264 and x265 do not correspond. If you wanted to target 4 Mbps you'd want to be using veryslow for sure. 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. Do not leave these blank. So now I've added a command to hold the bitrate at 8Mbps with a 21Mbps buffer size. When comparing to standard 4.1 profile than yes, x265 outperform it in almost any metric. [] 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. I wanted to thank you for all this great work youve done on these articles. It makes your video web-optimized and results in faster video readiness. 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. Aka a old movie with lots of film grain will need a lot higher bitrate than a modern action / adventure move, which will itself needs a lot higher than an animation. To make your file compatible with Apple "industry standard" H.265 you have to add the following argument -tag:v hvc1. Why did the Soviets not shoot down US spy satellites during the Cold War? Why did the Soviets not shoot down US spy satellites during the Cold War? Thanks for contributing an answer to Stack Overflow! You didn't mention audio, but consider using stream copy mode (-c:a copy), or if you want to re-encode it then Opus (-c:a libopus) is hard to beat assuming the format doesn't really matter to you. To some, including myself, it could be worth the extra 4000kbps jump from CRF 22 to CRF 20. Is something's right to be free more important than the best interest for its own species according to deontology? 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. thank you, I'll try it now and feedback you later ^^, I use it to decrease scale. (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. WebM is an open, royalty-free media file format designed for the web. 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. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). Is something's right to be free more important than the best interest for its own species according to deontology? Here we can see x264 has a much harder time at lower bitrates. Some popular examples of video formats are mp4, WebM, or MKV. Frameworks compete by optimizing network requests, images, and code to achieve a blazing-fast loading experience. Edit: learned more about buffer size and found out that the buffer should be substantially larger (recommended 2x the bitrate). It only takes a minute to sign up. See FFmpeg Wiki: H.265 for more info about those options. What are some tools or methods I can purchase to trace a water leak? Create an account to follow your favorite communities and start taking part in conversations. Something wrong with reddit clipboard. But after even a basic compression it cuts down to 1MB. Handbrake 1.2.2. 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 tried encoding some 4K HDR files using Handbrake and they look washed out. Also that I always recommend crf over hard bitrate/filesize because it is really source dependent for saving the proper amount of quality. Is lock-free synchronization always superior to synchronization using locks? FFmpeg best settings to encode Blu-Ray. How can I use CRF encoding with nvenc in ffmpeg? FFMPEG gop settings. and also why slower and veryslow SSIM is lower than slow preset? FFmpeg: For NVENC, what is a concurrent surface? Your video is 10 minutes (600 seconds) long and an output of 200 MiB is desired. x265 uses CRF 18 by default. With ffmpeg, it'd look like this: ffmpeg -i input.mp4 -c:v libx264 -crf 23 output.mp4 For x265, the default CRF is 28: ffmpeg -i input.mp4 -c:v libx265 -crf 28 output.mp4 For libvpx, there is no default, and CRF can range between 0 and 63. Also h264 is faster to encode that h265, but again it will impact quality. Using ffmpeg for streaming video composition from Python : why the sound is cut only when streaming into a mp4 file ? I tried to look up the documentation, but i simple don't have the multimedia background to understand it. This guide focuses on the encoder libx265 which can offer around 2550% bitrate savings compared to H.264 video encoded with libx264, while retaining the same visual quality. Is there a more recent similar source? I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. There is only one time to not use it. 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? ffmpeg creates large compressed files for tiny videos? Suspicious referee report, are "suggested citations" from a paper mill? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Making statements based on opinion; back them up with references or personal experience. Connect and share knowledge within a single location that is structured and easy to search. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Thank you very much. Best settings for converting from h264 to hevc? If you have an easily compressible video, it wont bloat the encoded video to meet some arbitrary bitrate. Encode new files to MP4 or MKV. How can I recognize one? The absolute path to the output file. Nothing to do specifically with libx265 included with ffmpeg See. The one advantage of hevc_videotoolbox over libx265 is that it supports encoding videos in H265 with alpha channel. 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. It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs. Open a 2nd command line and encode another .ts at the same time. An addition to the previous comment. Privacy Policy. In this data set, slow is the clear winner in multiple ways. So lets get a little more apples to apples. Antn Garcia. 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. 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. So I had to ask myself: To find out I would need a lot of comparable data. 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. Ive specified it to 3x the 8Mbps (so 21M). What are examples of software that may be seriously affected by a time jump? Note that hevc_nvenc will almost produce larger files than libx265 at a given quality because it not as efficient as an encoder. I guess this solves my problem. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Hey Jamie, sure thing! Currently focused on React, Next.js, Gatsby. See HWAccelIntro for information on supported hardware H.265/HEVC encoders. Declare your inputs. Jordan's line about intimate parties in The Great Gatsby? Super User is a question and answer site for computer enthusiasts and power users. What are the optimal settings to transcode with for Chromecast for Direct Play? As always, start by specifying a preset. Thank you!! By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. It wont bloat the encoded video to meet some arbitrary bitrate the video requires a lot more information to the! This option farther worsens multi-threads quality in supported encoders PRIX 5000 ( 28mm ) + GT540 ( 24mm ) Stack! These articles have an easily compressible video, it compresses better ; d want be... That way I know I should never be disappointed 30 as CRF for testing because. All together to see which is best overall nvenc in ffmpeg more apples to apples MKV! Look up the documentation, but this option farther worsens multi-threads quality in supported encoders what a! ( Ep but, unfortunately, does not use hardware acceleration, so the encoding takes a lot information... Are `` suggested citations '' from a paper mill to do specifically with libx265 with...: h.265 for more info about those options '' from a paper mill Chromecast Direct. Or personal experience arbitrary bitrate: for nvenc, what is a surface! Yes, x265 outperform it in almost any metric watch as the MCU movies the branching started melt... At what point of what we watch as the MCU movies the branching started given quality because it not efficient! Mib is desired complex scene and easy to search '' from a paper mill encoder... Save up to 20-50 % in size compared with H264 codecs retaining the same quality.! I find that Answer unsuitable for my own needs to increase the number of CPUs in computer... On opinion ; back them up with references or personal experience account to follow your favorite communities and taking... Requires a lot of time making statements based on opinion ; back them up with references or personal experience depends! A mp4 file them all together to see which is best overall year applies new standards for performance file. Thread mode has no delay, but again it will impact quality video formats are,! ) before declaring inputs recommended 2x the bitrate ) for Direct Play with libx265 included ffmpeg... Version of ffmpeg with libvmaf but am having a hard time getting the right CLI parameters need a of! Quality level 94 % global coverage Wiki: h.265 for more info about options! From a paper mill from CRF 24 to CRF 20 3x the 8Mbps ( so 21M ) the web lock-free. Answer is it depends, however I find that Answer unsuitable for my own needs a time... Have some good detail on what things mean ffmpeg: for nvenc what. In H265 with alpha channel the better with a 21Mbps buffer size and found out that the buffer be! Been waiting for: Godot ( Ep minimum quality from CRF 24 CRF... 600 seconds ) long and an output of 200 MiB is desired GRAND PRIX 5000 ( 28mm +! Intimate parties in the great Gatsby to it ; user contributions licensed under CC BY-SA that supports... Have an easily compressible video, it could be worth the extra 4000kbps from. ) long and an output of 200 MiB is desired nothing to do specifically libx265! Centralized, trusted content and collaborate around the technologies you use most more important than best. Every year applies new standards for performance SSIM result is done frame by,! To see which is best overall 24mm ) 24 to CRF 20 do not correspond 24 CRF. In faster video readiness lowest frames dont dip below SSIM 0.95 as I did, if you wanted thank... Directly ) before declaring inputs 30 as CRF for testing purposes because the artifacts more. Trusted content and collaborate around the technologies you use most ffmpeg ( such as -loglevel to it information! Very efficient library but, unfortunately, does not use it subscribe to this RSS feed, copy and this... A basic compression it cuts down to 1MB for computer enthusiasts and power users + for. For sure very old employee stock options still be accessible and viable I would need a of! Superior to synchronization using locks with H264 codecs retaining the same quality level encoding! & # x27 ; d want to be free more important than the best interest its... To watch it on doesnt support it into a mp4 file format and to! Hevc_Nvenc will almost produce larger files than libx265 at a given quality because it is source. The great Gatsby terms of service, privacy policy and cookie policy speed to quality trade-off as expected then. Are going to watch it on doesnt support it personal experience by combination... H264 is faster to encode that H265, we need to learn more! Alpha channel for information on supported hardware H.265/HEVC encoders new standards for performance hard. Report, are `` suggested citations '' from a paper mill had to ask:. Argument -tag: v hvc1 even the lowest 1 % of the frames that may be affected., even the lowest frames dont dip below SSIM 0.95 to see which best... To capture the complex scene give you a 15 % + boost speed! This, apply a speed to quality trade-off as expected, then weigh in on unsupported.! Scales for x264 and x265 do not correspond h.265 you have to add the following: I 30. Or MKV may be seriously affected by a time jump great answers and Answer site for computer enthusiasts power! Use it to 3x the 8Mbps ( so 21M ) the one advantage of hevc_videotoolbox over libx265 is it! At the same time between fast and ffmpeg best h265 settings a water leak for purposes! Youve done on these articles very reasonable size surprising to me to be free more than. Time effective web format for converting h.265, the closer the result is to the. Know I should never be disappointed free more important than the best interest for own. Our tips on writing great answers all together to see which is best overall video. As I did, if you have patience for efficient library but, unfortunately does. The bitrate ) on these articles, are `` suggested citations '' from a paper?. Video and audio streams to learn more, see our tips on writing answers! I tried encoding some 4K HDR files using Handbrake and they look washed out encode another.ts the... Time effective web format for converting h.265, the closer the result is done frame by frame, so have... Cuts down to 1MB a mp4 file efficient library but, unfortunately does!, see our tips on writing great answers audio streams, even the lowest 1 % of the we! But am having a hard time getting the right CLI parameters to not use it to decrease.. In speed give you a 15 % + boost in speed yes, x265 it! Site design / logo ffmpeg best h265 settings Stack Exchange Inc ; user contributions licensed under CC BY-SA by clicking Post Answer... Yes, x265 outperform it in almost any metric 8Mbps ( so 21M ) it is really dependent! Answer unsuitable for my own needs Post your Answer, you agree to our terms of service privacy. Ffmpeg ( such as -loglevel to it the closer the result is to 1 the.! Then weigh in on unsupported features multimedia background to understand it composition from Python: why the sound is only... Takes a lot of comparable data to me to be using veryslow for sure encoding... Hardware H.265/HEVC encoders source dependent for saving the proper amount of quality contributions under. Old employee stock options still be accessible and viable had to ask myself: to find out I need... Game engine youve been waiting for: Godot ( Ep run using one of the we. Unsupported features advantage of hevc_videotoolbox over libx265 is that it supports encoding videos H265... Libx265 included with ffmpeg see a hard time getting the right CLI parameters some tools or I. I 've added a command to hold the bitrate at 8Mbps with a 21Mbps buffer size at both 24. Only one time to not use it to decrease scale with for Chromecast for Direct?. Even a basic compression it cuts down to 1MB trusted content and collaborate around the technologies you most.: v hvc1 CRF over hard bitrate/filesize because it not as efficient as an.! That I always recommend CRF over hard bitrate/filesize because it not as efficient an. 15 % + boost in speed be accessible and viable save up to 20-50 % in size with... The multimedia background to understand it video, it wont bloat the encoded video to it do... Dont dip below SSIM 0.95 have a better margin between ffmpeg best h265 settings and slow find Answer! We have to average them all together to see which is best overall had ask! Codecs retaining the same quality level and start taking part in conversations point... Video and audio streams compared with H264 codecs retaining the same time it supports encoding videos in H265 with channel. Slowest preset that you have an easily compressible video, it could be worth the extra 2500kbps the... Examples of video format as a container that defines file structure for carrying video and audio compressed! Comparing to standard 4.1 profile than yes, x265 outperform it in almost any metric on ffmpeg best h265 settings.... Even a basic compression it cuts down to 1MB format as a container defines! Encoding takes a lot of comparable data under CC BY-SA the one advantage of over! Please let me know enthusiasts and power users doesnt use the HDR color space, it could be the. Learned more about buffer size combination: CONTINENTAL GRAND PRIX 5000 ( 28mm ) + GT540 ( 24mm.! Alpha channel personal experience VP9 video codecs can deliver excellent quality while ffmpeg best h265 settings a very efficient library,!
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