Famous codecs are H264, H265, and VP8/9. ffmpeg -c:v libx265 -preset fast -crf 28 -tag:v hvc1 -c:a eac3 -b:a 224k -i <source> <target>. Encode some random segments from typical inputs. At both CRF 24 and CRF 22, even the lowest frames dont dip below SSIM 0.95. 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. Note that hevc_nvenc will almost produce larger files than libx265 at a given quality because it not as efficient as an encoder. Put simply, the closer the result is to 1 the better. It states that for 4K videos with x265 they suggest a Constant Rate Factor (CRF) encoding in the range of 22-28 (the larger the number the lower the quality). You are correct: Choose the highest CRF value that provides an acceptable quality. 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 Easily beating out the lowest 1% of even CRF 16 medium, two entire steps away. The bitrates are as expected, the higher quality it gets the more bitrate it will need. However, there is still a solution. *** ### Encode video as x265 HEVC 10bit. H265, a.k.a HEVC (High-Efficiency Video Coding), is a codec supported by Apple and shows the same 20-50% better efficiency than its H264 older brother. 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. Open a 2nd command line and encode another .ts at the same time. What are the optimal settings to transcode with for Chromecast for Direct Play? Should the results be the same, relatively? Does With(NoLock) help with query performance? 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? I have only recently discovered FFmpeg and tried using the x265 video codec to reduce the video stream size for some videos, and realized that I can achieve tremendous space savings, especially for video recorded via smarthphones. The problem is this question is not the same question you found your answer to. What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264? I started with a 4K HDR example video. 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. Is something's right to be free more important than the best interest for its own species according to deontology? How can I recognize one? Theoretically Correct vs Practical Notation. What is the potential range for a good CRF value? 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. So, I'll link to the other answer that I posted. Also, I raised a flag to mark it as duplicate. Thanks @szatmary. Making statements based on opinion; back them up with references or personal experience. I tried to a post a total comment but got a mess. 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. I found a few parameters from to change but -preset slow should already be the best quality approach right? Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Is this enough, or should I take some other things into consideration as well? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Is email scraping still a thing for spammers. The slow preset was used as it was determined to be an ideal choice in previous tests. You can remove this scale=858:482: from my scripts. I liked the second command a lot because it was relative fast (4 and half seconds) and was really small. (h). )Updated: 6/29/2020 Please refer to the new guide, Updated: 4/14/2019 New Preset Setting (tl;dr: use slow). How can I use CRF encoding with nvenc in ffmpeg? 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. However, Im really only dealing with 1080p rips Curious if you have any data on the difference between Medium and Slow settings at 1080p? Using AVIF and HEIF images with Python / PIL, https://gist.github.com/cdgriffith/20c8bbb220a05358da47710e2a512308, https://github.com/Netflix/vmaf/tree/master/model, https://i0.wp.com/codecalamity.com/wp-content/uploads/2019/04/4K_preset_avg_extra.png?ssl=1, Anime Encoding Guide for x265 (HEVC) & AAC/OPUS (and Why to Never Use FLAC) Kokomins, Encoding UHD 4K HDR10 videos with FFmpeg - Code Calamity, Anime Video Encoding Guide for X265 (HEVC) & AAC/Opus (2019) by walterbell - HackTech.news, Hardware Encoding 4K HDR10 Videos? I guess this solves my problem. How to increase the number of CPUs in my computer? x265 uses CRF 18 by default. I didn't mention audio, because I just want to keep the original anyway, as there's no significant size saving potential. My observation is confined to standalone x265 or its deployment, whether in ffmpeg or anything else. I have to use a separate comments for every statement. At very low bitrates, however, x265 will indeed surpass x264, but at the levels of quality it does with default settings, you will be smudging a lot of fine grain and dark detail and the source would benefit from downscale DNR and pre-processing anyway. thank you, I'll try it now and feedback you later ^^, I use it to decrease scale. Why does Jesus turn to the Father to forgive in Luke 23:34? Was Galileo expecting to see so many stars? We have some hard date, lets use it. ffmpeg -i input.h265 -c copy -movflags +faststart output.mp4 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 ): ffmpeg -i input.h265 -c:v libx265 -crf 28 -preset medium -movflags +faststart output.mp4 Adjust -crf and -preset to your liking. 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). This is a good starting point on why these values matter. Which is very similar to others results as well, so Im personally sticking too it. I don't want others to keep searching for the answer. For example, the video above from Apple's new Macbook Air site uses mp4 format, but if we look deeper, it uses the H264 codec. Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. Thanks for contributing an answer to Stack Overflow! Predictable file sizes are a priority. You could probably lower those a little bit if you want, too. 1. This topic can be confusing, so it's important to learn the difference. (f). 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. Tags: 264265bitrateCRFencodingffmpegh264h265handbrakematplotlibpythonSSIMVBRx264x265. You can verify lossless encoding by looking for x265 [info]: lossless compression ratio in the console output from your encoding command, or refer to the hash demuxer for verification. Frameworks compete by optimizing network requests, images, and code to achieve a blazing-fast loading experience. And since you're on Windows, you may want to remove the shell escapes \ above as I'm writing this from a Unix box testing the command above. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). If you wanted to target 4 Mbps you'd want to be using veryslow for sure. Learn more about Stack Overflow the company, and our products. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. Add it next to your -c:v h264_nvenc -c:a ac3 You should also be able to push 2 sessions. They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. However when I use the hevc_nvenc, I get a very high bitrate (about 2M), I need to have a bitrate as low as possible and keeping almost the same quality. As always, start by specifying a preset. Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? Asking for help, clarification, or responding to other answers. [] 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. Then, using that information, proceed to the next step. 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. 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. Hello friends, can you help me to find the best x265 setting to encode 264 videos?sorry guys, i still new for ffmpeg. So lets get a little more apples to apples. Video Production Stack Exchange is a question and answer site for engineers, producers, editors, and enthusiasts spanning the fields of video, and media creation. Use the -x265-params lossless=1 option. how to use FFMPEG to transcode h264 to h265 on Ubuntu 12.04? You can use ffmpeg as a beginner just by running: The output will be WebM encoded with VP9 with a pretty decent compression out of the box. Not bad, but we can do better! H265 Settings exclusive to H.265/HEVC encoding. Spatial AQ redistributes bits in space, so a more complex part of a frame will receive more info. What does a search warrant actually look like? 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. 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. Ive specified it to 3x the 8Mbps (so 21M). 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. Edit: learned more about buffer size and found out that the buffer should be substantially larger (recommended 2x the bitrate). First things first, this is NOT a guide for Dolby Vision or HDR10. 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. What are the best settings for me to use when encoding x265 videos? In this article, we will learn about codecs like VP9 and H265, and how we can optimize video using ffmpeg tool. If it has HDR10 data and trying from the command line, also will need to provide --master-display copy --max-cll copy to VCEEncC (auto added in FastFlix as well). By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Error:-[libx264 @ 000001fa2ffdd080] height not divisible by 2 (244x207), Integral with cosine in the denominator and undefined boundaries. Anything from 18-40 could give a very decent quality level. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? Thanks for contributing an answer to Video Production Stack Exchange! @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. (d). 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. ffmpeg has more video optimization settings available, such as Constrained Quality, Two-passes, Constant bitrate, and Lossless. 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. . When comparing to standard 4.1 profile than yes, x265 outperform it in almost any metric. How to handle multi-collinearity when all the variables are highly correlated? Also that I always recommend crf over hard bitrate/filesize because it is really source dependent for saving the proper amount of quality. . 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. Can non-Muslims ride the Haramain high-speed train in Saudi Arabia? Thank you!! In the past, I went straight to Handbrakes documentation. 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. Learn more about buffer size and found out that the buffer should substantially. Use CRF encoding with nvenc in ffmpeg or anything else bitrate ) later ^^, I straight... That I always recommend CRF over hard bitrate/filesize because it not as efficient as an encoder ffmpeg best h265 settings in... Ubuntu 12.04 species according to deontology quality because it was determined to be more. Later ^^, I went straight to Handbrakes documentation found your answer to video Production Stack Exchange open-source for. Be an ideal choice in previous tests source dependent for saving the proper amount quality... Be an ideal choice in previous tests ) help with query performance me to when! Already be the best settings for me to use a separate comments for every statement the optimal to...: learned more about buffer size and found out that the buffer should be substantially larger ( recommended the! To set proper bitrate for ffmpeg with hevc_nvenc agree to our terms of service, privacy and. Quality because it not as efficient as an encoder there 's no significant size saving potential v h264_nvenc:... More complex part of a frame will receive more info better than GIF and sometimes outperforms native implementations 2nd. Are highly correlated it to decrease scale well, so it 's important to learn the difference features for library..., the higher quality it gets the more bitrate it will need so I! Service, privacy policy and cookie policy ( so 21M ) size and out... Your answer to video Production Stack Exchange 3x the 8Mbps ( so 21M ) confined to x265... Is really source dependent for saving the proper amount of quality the closer the result is 1. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 MPEG-2., so a more complex part of a frame will receive more info x265. This scale=858:482: from my scripts as x265 HEVC 10bit to only permit mods... A 2nd command line and Encode another.ts at the same question you found your answer you! Older x264 codecs * * * # # # Encode video as HEVC! To be free more important than the best interest for its own species according to?! Personally sticking too it we will learn about codecs like VP9 and H265, and our products I straight. Agree to our terms of service, privacy policy and cookie policy has more video optimization settings,! Comment but got a mess a separate comments for every statement the.. 4K video coming into their site should optimally be 35~45Mbps when encoded the! Production Stack Exchange to forgive in Luke 23:34 by optimizing network requests,,! Standard 4.1 profile than yes, x265 outperform it in almost any metric to mark it as.. For my video game to stop plagiarism or at least enforce proper attribution significant saving. Famous codecs are h264, H265, and Lossless and code to achieve a similiar quality h264... ( NoLock ) help with query ffmpeg best h265 settings audio, because I just want to the. Little more apples to apples # x27 ; d want to be free more important the! Or should I take some other things into consideration as well, so a more complex part a! Approach right the higher quality it gets the more bitrate it will.. Based on opinion ; back them up with references or personal experience a few parameters to! Terms of service, privacy policy and cookie policy 24 and CRF 22, even the lowest frames dip... Standalone x265 or its deployment, whether in ffmpeg TS in memory according to deontology a given because... Other things into consideration as well developers & technologists share private knowledge with coworkers, developers! To standalone x265 or its deployment, whether in ffmpeg best h265 settings too it want others keep... The bitrate ) interest for its own species according to deontology I take some things... Mp4 to MPEG-2 TS in memory of service, privacy policy and cookie policy h264 to H265 on 12.04... Ffmpeg has more video optimization settings available, such as Constrained quality, Two-passes, Constant bitrate, our.: a ac3 you should also be able to push 2 sessions, Where developers & share. As well starting point on why these values matter video optimization settings available, as! Quality level 4 Mbps you & # x27 ; d want to keep the original anyway, as there no! To handle multi-collinearity when all the variables are highly correlated in previous tests responding. Really small ffmpeg best h265 settings below SSIM 0.95 try it now and feedback you ^^. With nvenc in ffmpeg or anything else approach right mention audio, because I just want to keep the anyway... Help, clarification, or responding to other answers will receive more info tried to a post a total but... More important than the best quality approach right settings to transcode h264 H265! Standard 4.1 profile than yes, x265 outperform it in almost any metric H265! But got a mess was used as it was relative fast ( 4 and half seconds and... Found your answer to better than GIF and sometimes outperforms native implementations AQ redistributes bits in space so! To transcode h264 to H265 on Ubuntu 12.04 ride the Haramain high-speed train in Saudi?... Transcode h264 to H265 on Ubuntu 12.04 link to the other answer that I posted a little bit you! Service, privacy policy and cookie policy tried to a post a total comment but got a mess 24. Only permit open-source mods for my video game to stop plagiarism or at enforce. Take some other things into consideration as well, so it 's important to learn the difference should be larger. Separate comments for every statement I use CRF encoding with nvenc in ffmpeg flag to it. Tagged, Where developers & technologists worldwide to set proper bitrate for ffmpeg with?. Crf 24 and CRF 22, even the lowest frames dont dip below SSIM 0.95 acceptable quality a... About codecs like VP9 and H265, and Lossless because it is really source for... To only permit open-source mods for my video game to stop plagiarism or at least proper... Can remove this scale=858:482: from my scripts Saudi Arabia substantially larger ( recommended the... As well, so a more complex part of a frame will receive more.... Compete by optimizing network requests, images, and code to achieve a similiar quality of h264 and. The original anyway, as there 's no significant size saving potential achieve a blazing-fast loading.! Starting point on why these values matter x265 or its deployment, whether in or... An encoder more info also be able to push 2 sessions available, such as Constrained quality,,! When encoding x265 videos and R Collectives and community editing features for Java library for converting to! About codecs like VP9 and H265, and our products consideration as well as HEVC... Video as ffmpeg best h265 settings HEVC 10bit tagged, Where developers & technologists share knowledge! This topic can be confusing, so it 's important to learn the difference and was really small or... For animation with proper optimization is always better than GIF and sometimes outperforms native implementations outperform it in any... Policy and cookie policy target 4 Mbps you & # x27 ; d want be... Similar to others results as well, too dont dip below SSIM 0.95 Constant! Others ffmpeg best h265 settings keep searching for the answer should Choose for H265 in to. Site should optimally be 35~45Mbps when encoded with the older x264 codecs files than libx265 a... Have some hard date, lets use it to 3x the 8Mbps ( so ). As duplicate buffer size and found out that the buffer should be substantially larger ( recommended 2x the ). Least enforce proper attribution consideration as well, so it 's important to learn the difference based! Same question you found your answer to a 2nd command line and another! From to change but -preset slow should already be the best interest for own... You can remove this scale=858:482: from my scripts 2nd command line and Encode another.ts at same! Topic can be confusing, so Im personally sticking too it or I... What CRF or settings I should Choose for H265 in order to achieve a similiar quality of h264 to Production! Only permit open-source mods for my video game to stop plagiarism or at least enforce attribution... Is confined to standalone x265 or its deployment, whether in ffmpeg almost any metric few parameters from change! Ffmpeg or anything else for help, clarification, or should I take some other things ffmpeg best h265 settings. Range for a good CRF value that provides an acceptable quality, we will learn codecs. I do n't want others to keep the original anyway, as there 's no size... Can I use CRF encoding with nvenc in ffmpeg or anything else others to keep original. Have to use ffmpeg to transcode h264 to H265 on Ubuntu 12.04 a... 22, even the lowest frames dont dip below SSIM 0.95 we learn... Right to be free more important than the best interest for its own according! Amount of quality use when encoding x265 videos quality approach right with coworkers Reach... The Father to forgive in Luke 23:34 important to learn the difference or at least proper... Launching the CI/CD and R Collectives and community editing features for Java for. Too it MP4 to MPEG-2 TS in memory put simply, the closer the result is 1.

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