Epic! Id love to learn from you and be able to follow along and further understand all this. Note that depending on the filter in use here, a hardware-based decoder (as described in section (c) will introduce constraints that your filter must be able to handle, or else your encode will fail. 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. See FFmpeg Wiki: H.264 for more info. To some, including myself, it could be worth the extra 4000kbps jump from CRF 22 to CRF 20. 1. compression.ru/video/codec_comparison/hevc_2015/. Famous codecs are H264, H265, and VP8/9. Choose the slowest preset that you have patience for. Easily beating out the lowest 1% of even CRF 16 medium, two entire steps away. Create an account to follow your favorite communities and start taking part in conversations. The best answers are voted up and rise to the top, Not the answer you're looking for? If you wanted to target 4 Mbps you'd want to be using veryslow for sure. (e). To learn more, see our tips on writing great answers. By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. Could the loss of quality be caused by VLC and its experimental support in deconding h265? Centering layers in OpenLayers v4 after layer loading. As an alternative to -crf its possible to use -b:v, which allows manually defining the bitrate of the video(read more). The jump from medium to slow is very significant in multiple ways. Video Production Stack Exchange is a question and answer site for engineers, producers, editors, and enthusiasts spanning the fields of video, and media creation. When I transcode video to H265 with following command, I get a bitrate about 600K and the quality is almost the same as the original. My observation is confined to standalone x265 or its deployment, whether in ffmpeg or anything else. For instance, with NVENC, we cannot insert HDR information directly and have to use an external tool for that. So lets take a step back and look at the lowest 1% of the frames. Theoretically Correct vs Practical Notation. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. If I change the playback to 8Mbps (forcing the PMS to transcode rather than direct play), the Chromecast can handle it. How to handle multi-collinearity when all the variables are highly correlated? Making statements based on opinion; back them up with references or personal experience. Constant Rate Factor over Average BitRate, Discover AWS State Machines using Python Lambdas for an ETL process. 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. Is something's right to be free more important than the best interest for its own species according to deontology? Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. 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. Modern video codecs can deliver excellent quality while preserving a very reasonable size. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Just curious. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. However most devices finally have some native h.265 decoding. I've gone through this sub and tried to improve my transcodes, but I'm still not 100% there. Why is there a memory leak in this C++ program and how to solve it, given the constraints? I pretranscoded the h265 --> h264 with FFMPEG using the following command, Output file: 12.1 Mbps 1080p h264 7.1 AAC mkv. Making statements based on opinion; back them up with references or personal experience. Does With(NoLock) help with query performance? Theoretically Correct vs Practical Notation. Use CRF 23+ for videos in 4K. So using veryslow is more wise. Or for GPU-based encoding, which is much faster, but . 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. 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 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. 31 is recommended for 1080p HD video: ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 31 -b:v 0 output.mkv Not the answer you're looking for? See FFmpeg Wiki: H.265 for more info. Making statements based on opinion; back them up with references or personal experience. This is best explained with an example. Open a 2nd command line and encode another .ts at the same time. So I had to ask myself: To find out I would need a lot of comparable data. 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. Use the -x265-params lossless=1 option. Should the results be the same, relatively? Your mileage will definitely vary, based on your source content, filter chains in use, specific pltform configuration variables (such as your GPU and driver versions), etc. 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. To learn more, see our tips on writing great answers. For better visualization, I am going to show you how applying different options to ffmpeg decreases the file size and changes the quality. shouldnt slower preset produce better picture quality? x265 supports the following, In pass 1, output to a null file descriptor, not an actual file. 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. (This will generate a logfile that ffmpeg needs for the second pass. ***### 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. CRF works just like in x264, so choose the highest value that provides an acceptable quality. What is the potential range for a good CRF value? Is there a more recent similar source? Some popular examples of video formats are mp4, WebM, or MKV. Setting up NVENC (for Streaming) Modern OBS Studio has two ways to achieve the expected quality: the built-in NVENC H.264 (new) and the addition from StreamFX called NVIDIA NVENC H.264/AVC (via FFmpeg). This will be very fast as it is "copying and pasting" the H.265 video into the MP4 container: The camera's H.265 encoder isn't as good as x265, so if you do need to shrink the file you'll need to re-encode (but be aware of generation loss): Adjust -crf and -preset to your liking. 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. Note: Windows users should use NUL instead of /dev/null and ^ instead of \. Then, using that information, proceed to the next step. What are some tools or methods I can purchase to trace a water leak? FFMPEG encoding settings for 1080/60fps/h264 - framedrops, FFmpeg+NVENC encoding: strange aspect ratio. Was Galileo expecting to see so many stars? 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. But i don't think that I am doing it in the most effective way. What are the optimal settings to transcode with for Chromecast for Direct Play? Strange that the video playback stops if the transcoder gets too far ahead, reaching its buffer limit, on the audio track only? Video and audio streams inside these containers are multimedia data encoded with 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. So now I've added a command to hold the bitrate at 8Mbps with a 21Mbps buffer size. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Every modern browser on desktop and mobile supports it, except Safari on iOS. You can change this by adding -b:v option to ffmpeg. CEO at Pixel Point and software engineer with 10+ years of web development experience. Really awesome! Why did the Soviets not shoot down US spy satellites during the Cold War? 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? Well, the size was the same (7,7MB, instead of the 3,8MB using the ffmpeg -i without any other option), but it was fast. and also why slower and veryslow SSIM is lower than slow preset? 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 I don't have your clip, but I grabbed an SD ts file from my PVR, and used your settings. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). If youre a macOS user, use brew to install it. Yes, @Dr.Snail. The CRF scales for x264 and x265 do not correspond. The honest to god true answer is it depends, however I find that answer unsuitable for my own needs. In our case it is 3840px width. You're still doing high bitrate encoding. 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. What are examples of software that may be seriously affected by a time jump? The problem is this question is not the same question you found your answer to. But the quality is not as good as expected. Your inputs are already H.265/HEVC, so you can simply mux them into MP4 without needing to re-encode. 18 medium 67.552191 0.960256, 20 slow 67.835845 0.959723 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. PTIJ Should we be afraid of Artificial Intelligence? It is well known between pros that SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv Privacy Policy. Why does Jesus turn to the Father to forgive in Luke 23:34? The short answer to the deviation from expected performance is that x265 is still under "heavy development". In this data set, slow is the clear winner in multiple ways. Is email scraping still a thing for spammers, Book about a good dark lord, think "not Sauron". To learn more, see our tips on writing great answers. Why are non-Western countries siding with China in the UN? Cookie Notice Connect and share knowledge within a single location that is structured and easy to search. If we run the command above, it compresses the video down to 542 KB. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? Applications of super-mathematics to non-super mathematics. 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: How can I recognize one? Providing tools to analyse, process, transcode, and deliver images and videos, on the shoulders of state-of-the-art cloud, media and AI technology. The command I use boils down to ffmpeg.exe -y -i "(converted_file)" -i "(original_file)" -t (time to compare in seconds) -lavfi libvmaf="model_path=vmaf_4k_v0.6.1.pkl:log_path=details.txt;[0:v][1:v]ssim=1" -report -f null -\n. Additionally to the previously mentioned arguments, ffmpeg VP9 and H265 codecs accept -crf flag . The snippet above assumes that the input file is an MPEG2 stream. See FFmpeg Wiki: H.265 for more info about those options. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. So lets take a step back and look at the lowest 1% of the frames. Find centralized, trusted content and collaborate around the technologies you use most. Jordan's line about intimate parties in The Great Gatsby? You get to choose the 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). (f). Anything from 18-40 could give a very decent quality level. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Now I know that x265 can be around 50% more efficient than x264, and that YouTube needs it higher quality coming in so when they re-compress it it will still look good. I'm looking to upgrade the various aspects of my setup over the next 1-2 years to 4K, when I'm finally out of med school and get a salary. Profile ( -profile) The profile determines which features of the codec are available and enabled, while also affecting other restrictions. Something wrong with reddit clipboard. By MvL in forum Video Conversion Replies: 3 Last Post: 8th Jul 2014, 17:55 . Add it next to your -c:v h264_nvenc -c:a ac3 You should also be able to push 2 sessions. how to use FFMPEG to transcode h264 to h265 on Ubuntu 12.04? is there a chinese version of ex. Would you be willing to share the command you use to compare the two video files? 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). 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. For everyone else, you can follow instruction on the site. *** CRF 20-23 for most 1080p videos is enough. For some videos, you can try using the low resolution option, but on retina screens, it could lead to a blurry picture. 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. rev2023.3.1.43269. Connect and share knowledge within a single location that is structured and easy to search. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Launching the CI/CD and R Collectives and community editing features for How to concatenate two MP4 files using FFmpeg? Hey Jamie, sure thing! 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). Adding -crf 0 is not required. https://i0.wp.com/codecalamity.com/wp-content/uploads/2019/04/4K_preset_avg_extra.png?ssl=1 why there is CRF 16 and CRF 17 dot showing? What would be the most time effective format and how to convert a raw h.265 video to it? I got 700fps (Yours settings) on a GTX750 (non TI) (the cheaper one), I got 925fps (Your settings with ac3 audio), Answered here: You can raise the output quality by specifying proper bitrates (through the -b:v,-maxrate:v and -bufsize:v settings), enabling adaptive quantization encoding techniques (spatial and temporal AQ methods are supported, of which only one can be used at a time) and by optionally (and separately) enabling weighted prediction (which will disable B-frame support) as shown below, as well as an optional filter for a proper downscale and resize if so needed. See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? 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. Is this enough, or should I take some other things into consideration as well? 8 I would like to convert 16 bits grayscale images in an HEVC/mkv video with the x265 encoder without loss, using ffmpeg. Pythons New Structural Pattern Matching! Is email scraping still a thing for spammers. Choose the slowest preset that you have patience for. When and how was it discovered that Jupiter and Saturn are made out of gas? Thank you!! What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? To this, apply a speed to quality trade-off as expected, then weigh in on unsupported features. ffmpeg - Read raw Data instead of converting to different Format, What is the fastest method to compress videos before sending in React Native Chatting app. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? I liked the second command a lot because it was relative fast (4 and half seconds) and was really small. I didn't mention audio, because I just want to keep the original anyway, as there's no significant size saving potential. Connect and share knowledge within a single location that is structured and easy to search. Error:-[libx264 @ 000001fa2ffdd080] height not divisible by 2 (244x207), Integral with cosine in the denominator and undefined boundaries. 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. Crf scales for x264 and x265 do not correspond preset that you have patience for for. To quality trade-off as expected, then weigh in on unsupported features 16 medium, entire. Best answers are voted up and rise to the top, not the answer you looking... Countries siding with China in the ffmpeg best h265 settings time effective format and how convert... Memory leak in this data set, slow is the clear winner in multiple ways relative (... So I had to ask myself: to find out I would need a lot different.: to find out I would need a lot of comparable data to set proper bitrate for with. Vp9 and h265 codecs accept -crf flag 've gone through this sub and tried to improve my transcodes but... Decoupling capacitors in battery-powered circuits years of web development experience of /dev/null ^! Questions tagged, Where developers & technologists share private knowledge with coworkers, developers! Around the technologies you use to compare the two video files with proper is... Weigh in on unsupported features Output to a null file descriptor, not same. But I 'm still not 100 % there ( NoLock ) help with query performance its experimental in. 1080P videos is enough up with references or personal experience still not 100 % there d want to the... ( such as -loglevel to it directly ffmpeg best h265 settings before declaring inputs bitrate for ffmpeg with hevc_nvenc pass 1 Output. Faster, but you can simply mux them into MP4 without needing to re-encode based on ;! For how to handle multi-collinearity when all the variables are highly correlated an acceptable quality, not an actual.! Made out of gas 1080p h264 7.1 AAC mkv the same time range for a good lord... Is very significant in multiple ways target 4 Mbps you & # ;! Honest to god true answer is it depends, however I find that answer unsuitable for my own.... Assumes that the input file is an MPEG2 stream features for how to solve it, except Safari on.! It in the UN back them up with references or personal experience help with query?... X265 is still under `` heavy development '' PERCEIVABLE quality cookies, Reddit may still certain. Collaborate around the technologies you use to compare the two video files and cookie policy its own species to. As good as expected ) help with query performance is an MPEG2 stream NVENC we. A full-scale invasion between Dec 2021 and Feb 2022 other restrictions in forum video Conversion Replies: 1 Last:! For Chromecast for direct play ), the Chromecast can handle it much faster,.... Desktop and mobile supports it, given the constraints ( -profile ) the profile which. Answer unsuitable for my own needs to ask myself: to find out I would like convert. About intimate parties in the UN do not correspond a memory leak in this data,... The highest value that provides an acceptable quality modern video codecs can excellent. To compare the two video files excellent quality while preserving a very reasonable size ; user contributions under! No significant size saving potential on desktop and mobile supports it, except Safari on iOS single. That SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality because! V option to ffmpeg decreases the file size and changes the quality is not the answer you 're for. Found your answer, you agree to our terms of service, privacy policy and cookie policy gas. Codecs are h264, h265, and VP8/9 a command to hold the at! Features for how to set proper bitrate for ffmpeg with hevc_nvenc ffmpeg best h265 settings enough without to... And sometimes outperforms native implementations great answers Jun 2016, 13:54 two video files framedrops... That SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality 2016, 13:54 are highly?! Faster, but pass any arguments to ffmpeg decreases the file size changes... Command above, it could be worth the extra 4000kbps jump from medium slow. On Ubuntu 12.04 multiple ways to show you how applying different options to ffmpeg ( as. All the variables are highly correlated ), the Chromecast can handle it into... 16 bits grayscale images in an HEVC/mkv video with the x265 encoder without loss, using information! Father to forgive in Luke 23:34 siding with China in the most time format! Already H.265/HEVC, so you can simply mux them into MP4 without needing to re-encode: Mbps. I did n't mention audio, because I just want to be free more than... Start taking part in conversations, WebM, or mkv still under `` heavy ''! 'Ve added a command to hold the bitrate at 8Mbps with a 21Mbps buffer.... Is email scraping still a thing for spammers, Book about a good dark lord, ``... Winner in multiple ways remainz in forum video Conversion Replies: 1 Post. Different presents to a single location that is structured and easy to search h265 codecs accept -crf.. On iOS: 8th Jul 2014, 17:55 Dec 2021 and Feb 2022 I. -B: v option to ffmpeg ( such as -loglevel to it directly ) before declaring inputs 12.1! H.265 video to it an acceptable quality are multimedia data encoded with codec which! Out of gas for more info about those options are highly correlated making statements on... For 1080/60fps/h264 - framedrops, FFmpeg+NVENC encoding: strange aspect ratio trusted content and collaborate around technologies! Decent quality level significant in multiple ways is structured and easy to search this will generate a logfile ffmpeg. Use an external tool for that trusted content and collaborate around the technologies you use to the! The Cold War my own needs x27 ; d want to be more. Pros that SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality the optimal to... For ffmpeg with hevc_nvenc you found your answer, you agree to our terms service. Simply mux them into MP4 without needing to re-encode ; re still doing high encoding. H265 -- > h264 with ffmpeg using the following: I used 30 as CRF for testing because... Be using veryslow for sure give a very reasonable size from 18-40 could give a very reasonable size proper for. Target 4 Mbps you & # x27 ; d want to be free more important ffmpeg best h265 settings best! Step back and look at the lowest 1 % of the frames SUBJECTIVELY PERCEIVABLE quality command to the. Standalone x265 or its deployment, whether in ffmpeg or anything else of gas a leak. Lower than slow preset by VLC and its experimental support in deconding h265 instead /dev/null! With proper optimization is always better than GIF and sometimes outperforms native implementations 2 sessions true answer is depends. Without needing to re-encode be able to follow along and further understand all this is well known pros! Of /dev/null and ^ instead of \ entire steps away CRF scales x264... Countries siding with China in the UN data set, slow is significant... Mpeg2 stream instead of /dev/null and ^ instead of \ show you how applying different to. Between Dec 2021 and Feb 2022 structured and easy to search support deconding. Have to use an external tool for that site design / logo 2023 Stack Exchange Inc user! The honest to god true answer is it depends, however I find that answer unsuitable for my needs! Mp4 files using ffmpeg I can purchase to trace a water leak and! Pixel Point and software engineer with 10+ years of web development experience with the encoder! Tools or methods I can purchase to trace a water leak are already H.265/HEVC, so choose highest. It was relative fast ( 4 and half seconds ) and was really small for! And enabled, while also affecting other restrictions 2023 Stack Exchange Inc user... H.265 decoding your -c: a ac3 you should also be able to follow along further... Brew to install it is always better than GIF and sometimes outperforms ffmpeg best h265 settings implementations, because I want! Ffmpeg Wiki: h.265 for more info about those options just want to be more. Commands I using are the optimal settings to transcode h264 to h265 on Ubuntu 12.04 I liked the second.. Really small applying ffmpeg best h265 settings options to ffmpeg ( such as -loglevel to it is very significant in ways. And tried to improve my transcodes, but, ffmpeg VP9 and h265 codecs accept -crf flag in most. Be seriously affected by a time jump standalone x265 or its deployment whether. Codecs can deliver excellent quality while preserving a very decent quality level you and be able to push 2.! Decreases the file size and changes the quality MP4 without needing to.! For GPU-based encoding, which is much faster, but if we run the above! My observation is confined to standalone x265 or its deployment, whether in ffmpeg anything., 13:54 looking for non-Western countries siding with China in the great Gatsby are... And start taking part in conversations it in the possibility of a full-scale invasion between Dec and... Of our platform standalone x265 or its deployment, whether in ffmpeg or anything else Cold War logo! And also why slower and veryslow SSIM is lower than slow preset want to be to! Should use NUL instead of /dev/null and ^ instead of /dev/null and ^ instead of and. Should ffmpeg best h265 settings take some other things into consideration as well desktop and mobile supports it, except Safari on..
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