is it worth to spend more time to encode slower preset? 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. FFmpeg: For NVENC, what is a concurrent surface? Do you think for H.265 but with 1080p and less content that all of what youve posted here would still be applicable or do you think its only for 4k content? For everyone else, you can follow instruction on the site. Server: MacBook Pro with 2.66GHz i7, 4GB DDR3Connection to router: 5GHz WiFiMonitored with Tautulli (PlexPy), Chromecast v2 --> Onkyo Receiver 7.1 setup --> 1080p Sony Projector, Chromecast v1 --> Yamaha Receiver 5.1 setup --> 1080p TV, Amazon Firestick --> Yamaha Receiver 5.1 setup --> 1080p TV, These are connected over 2.4 GHz, unfortunately, (I know, I'm running some seriously old components in heresome are a decade old. The original was H.265 encoded with a .ts extension. 31 is recommended for 1080p HD video: ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 31 -b:v 0 output.mkv For better visualization, I am going to show you how applying different options to ffmpeg decreases the file size and changes the quality. Introducing FastFlix AV1 encoder GUI and more! 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. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). In fact, the MPV devs have mentioned this repeatedly, don't rely on hardware-accelerated decoding for mission-critical content delivery. So using veryslow is more wise. 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). But i don't think that I am doing it in the most effective way. 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. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? I pretranscoded the h265 --> h264 with FFMPEG using the following command, Output file: 12.1 Mbps 1080p h264 7.1 AAC mkv. Help with ffmpeg settings H265. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. Use CRF 23+ for videos in 4K. But when I looked at the videos I was enjoying just fine at CRF 22, they were mostly coming out with less than a 10Mbps bitrate. -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. 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: (Well get to that later.). Thanks for contributing an answer to Stack Overflow! Put simply, the closer the result is to 1 the better. For the llhp and llhq presets, as well as other presets in use, you can also override the in-built rate-control methods by passing the -rc:v arguments as exposed by the encoder options. Find centralized, trusted content and collaborate around the technologies you use most. Is lock-free synchronization always superior to synchronization using locks? I started with a 4K HDR example video. Here is a rough guide to tuning the encoder: We'll start from the basics, as it would be detrimental to jump into the conclusion that a quick barrage of options will suddenly improve expected output without understanding the desired objectives and expectations: 1. By Edgewall Software Now that it is clear, the next important thing to learn is that not every codec is suitable for every video format. This is a simple easy guide on how to make the best DVD conversions to H.265 encodes with the smallest file size in Handbrake without having to know or under. ffmpeg is a CLI tool and it has a lot of options that is nice to know. 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). And one last thing is -tag:v hvc1 that makes video work on iOS and macOS devices. However, there is still a solution. PTIJ Should we be afraid of Artificial Intelligence? Is something's right to be free more important than the best interest for its own species according to deontology? In this data set, slow is the clear winner in multiple ways. See FFmpeg Wiki: H.265 for more info about those options. Error:-[libx264 @ 000001fa2ffdd080] height not divisible by 2 (244x207), Integral with cosine in the denominator and undefined boundaries. 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. What is the potential range for a good CRF value? See FFmpeg Wiki: H.264 for more info. The Compilation Guides show you how to do that. Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. I got 700fps (Yours settings) on a GTX750 (non TI) (the cheaper one), I got 925fps (Your settings with ac3 audio), Answered here: This method is generally used if you are targeting a specific output file size and output quality from frame to frame is of less importance. The Compilation Guides show you how to do that. For H265, we need to learn some more extra options. 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 something's right to be free more important than the best interest for its own species according to deontology? Thanks for contributing an answer to Video Production Stack Exchange! Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Note that hevc_nvenc will almost produce larger files than libx265 at a given quality because it not as efficient as an encoder. But x265 is not yet as mature in its development as x264, so take that CRF equivalence with a pinch of salt. 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. However, that does not mean smaller file size at the same CRF. Older versions must use -x265-params keyint=1. Why are non-Western countries siding with China in the UN? 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. Create an account to follow your favorite communities and start taking part in conversations. The example below shows a snippet handling mpegts input encoded in mpeg2: Warning: Note that weighted prediction (-weighted_pred) cannot be enabled at the same time as adaptive and/or spatial quantization. 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. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. Suspicious referee report, are "suggested citations" from a paper mill? 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. ***### 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. Additionally to the previously mentioned arguments, ffmpeg VP9 and H265 codecs accept -crf flag . So lets take a step back and look at the lowest 1% of the frames. It is not a royalty-free codec - perhaps, that is why the adoption rate is much less than of WebM's. . 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. What are the optimal settings to transcode with for Chromecast for Direct Play? Sorry for the long post. Handbrake 1.2.2. Please read the new article for saving HDR.I have historically been using the older x264 mp4s for my videos, as it just works on everything. I guess this solves my problem. ffmpeg: Output mpegts with a single program containing 1 audio and 3 video, Set keyframe interval in ffmpeg when using nvenc. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Over 8 Mbps for most 1080p content with x265 is plenty good so you definitely don't need to use the slowest encoding settings. Press question mark to learn the rest of the keyboard shortcuts. Apple brought WebM support since macOS Big Sur to Safari on desktops, but to this day failed to make any progress on its mobile version. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? ), In pass 1, you can leave audio out by specifying, P. Hanhart et al., Subjective quality evaluation of the upcoming HEVC video compression standard (. (if you go higher than 4.1 preset). How to make PNG video render into 10bit h.264 matroska/avi file? There is no such thing as "proper bitrate". Is this the best possible solution, or is there a better way of doing this? How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? and also why slower and veryslow SSIM is lower than slow preset? What looks good today may not look so good in the future on a new display. This is best explained with an example. The jump from medium to slow is very significant in multiple ways. What is interesting, is if we put CRF 16 - Medium encodings bitrate on this chart it would go shoot off the top at a staggering 15510kbps! How do I speed up the encoding? See HWAccelIntro for information on supported hardware H.265/HEVC encoders. What are some tools or methods I can purchase to trace a water leak? as in example? To know more about this, check out a wonderful demohere. 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. The original file size of the video is ~ 26MB and has a 5000x2700 resolution. I mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared to default x264. What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264? What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? Should have been already almost completed in all its parts! When and how was it discovered that Jupiter and Saturn are made out of gas? RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? 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. FFMPEG gop settings. 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. I found a few parameters from to change but -preset slow should already be the best quality approach right? (This will generate a logfile that ffmpeg needs for the second pass. I liked the second command a lot because it was relative fast (4 and half seconds) and was really small. FFmpeg commands I using are the following: ffmpeg -i input.mp4 -c:v libx264 -crf 30 -c:a copy output_h264.mkv and If libx265 is too slow use libx264 which is faster but file size will be bigger. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. For more information, please see our For two-pass, you need to run ffmpeg twice, with almost the same settings, except for: For libx265, the -pass option (that you would use for libx264) is not applicable. Thank you!! This is a good starting point on why these values matter. 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). 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. Code Calamity 2023. In our case it is 3840px width. Keyframes need more data then other frame types to avoid pulsing poor quality keyframes. I have read that previously, Chromecast used to limit playback at 11 Mbps. 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? You're still doing high bitrate encoding. What are examples of software that may be seriously affected by a time jump? Great explanation. When you omit this option, ffmpeg uses -crf 32 for VP9 by default. That way I know I should never be disappointed. Something wrong with reddit clipboard. Because if every frame was that good, we shouldnt need more than 6Mbps x265 or 10Mbps x264 4K video. Choose a CRF. Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. Definitely not for archiving. Scroll down to the bottom to see notes on the performance impact of presets with this particular encoder. Providing tools to analyse, process, transcode, and deliver images and videos, on the shoulders of state-of-the-art cloud, media and AI technology. 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. It is less efficient in terms of optimization and does not have Constant Quality mode (-crf) and presets we used in the previous example. Hope that helps, thanks for asking and happy to help! How did Dominion legally obtain text messages from Fox News hosts? See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? ffmpeg creates large compressed files for tiny videos? Video and audio streams inside these containers are multimedia data encoded with codec. rev2023.3.1.43269. Afterwards compared them to the original using the Structural Similarity Index (SSIM). (e). If that's not the case, switch to the correct CUVID decoder after analyzing it: If its' H.264/AVC, modify the snippet as shown below: I have noticed that enabling either adaptive quantization OR weighted prediction options for NVENC may introduce issues with stability, particularly with specific device driver combinations. 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 How can the mass of an unstable composite particle become complex? Optionally, insert a filter. Learn more about Stack Overflow the company, and our products. So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. 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. Anything from 18-40 could give a very decent quality level. Quality perception for dynamic pictures differs severely compared to static images, so hacks like this help your video appear of good quality even in case of further reducing the size of a video. Just curious. I believe that the last value of 31.6 Mbps is exceeding the capacity of the Chromecast v2. Reddit and its partners use cookies and similar technologies to provide you with a better experience. It looks to take about a crf increase of 2 to achieve near parity of medium to slow (aka 18 medium is close to 20 slow). Not the answer you're looking for? Should I include the MIT licence of a library which I use from a CDN? Ive got the right version of FFmpeg with libvmaf but am having a hard time getting the right CLI parameters. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By default, this is disabled, and it is generally not required to set a tune option. shouldnt slower preset produce better picture quality? 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. Powered by Trac 1.4.2 Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Then, using that information, proceed to the next step. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Note: Windows users should use NUL instead of /dev/null and ^ instead of \. Thanks for contributing an answer to Stack Overflow! Really awesome! Please do not post the same answer to multiple questions. Use this mode if you want to retain good visual quality and don't care about the exact bitrate or filesize of the encoded file. Not the answer you're looking for? So where does that show up on our chart? To learn more, see our tips on writing great answers. If youre a macOS user, use brew to install it. Although I've been using Plex for years, my setup is far inferior to most of the people on this forum. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. When it comes to bitrates, ensure that your desired values are set via the -b:v, -maxrate:v and -bufsize:v options. Jordan's line about intimate parties in The Great Gatsby? Keep in mind that is while still being lesser quality than CRF 18 - Slow. But that impacts quality so you will need to test to see what quality is acceptable. All Rights Reserved. Easily beating out the lowest 1% of even CRF 16 medium, two entire steps away. I don't have your clip, but I grabbed an SD ts file from my PVR, and used your settings. libvpx-vp9 has the option -deadline which accepts following values: Time to switch to H265 and libx265. 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. Asking for help, clarification, or responding to other answers. 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. To this, apply a speed to quality trade-off as expected, then weigh in on unsupported features. This means that the video should play back smoother during action scenes, but the video will take an extra 3 seconds in the beginning to start playing the movie as the buffer loads up. Consider your encoding workflow and adjust as necessary. 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. Thanks @szatmary. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Why did the Soviets not shoot down US spy satellites during the Cold War? Has Microsoft lowered its Windows 11 eligibility criteria? It works if I specify the output bitrate, but I want to know how to figure out the proper bitrate? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Is email scraping still a thing for spammers. I may mix it up myself in this article, dont worry about the letter, just the numbers. I want a setting that I can use on any incoming 4K HDR video I buy. I use the monochrome12 profile. To learn more, see our tips on writing great answers. The number of distinct words in a sentence. What would be the most time effective format and how to convert a raw h.265 video to it? 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. I ran some quick tests this morning with a script I am using for a new version of this article using ffmpeg instead of Handbrake. Does Cosmic Background radiation transmit heat? This is simply for videos using the BT.2020 color primaries. Dont be sad though, there is a solid alternative for iOS users. Unfortunately, the same can't be said about videos. Does ffmpeg really use my Graphics card to encode? Making statements based on opinion; back them up with references or personal experience. 3 seconds at the start is nothing as long as the movie plays fine. You need to download the model you want to use (vmaf_4k_v0.6.1.pkl and vmaf_4k_v0.6.1.pkl.model in my case) from https://github.com/Netflix/vmaf/tree/master/model. This should work in your command line. x265 CRF 28 is supposed to be equivalent to x264 CRF 23. compression.ru/video/codec_comparison/hevc_2015/. Not sure if theyre agnostic of resolution. Thanks for contributing an answer to Stack Overflow! When comparing to standard 4.1 profile than yes, x265 outperform it in almost any metric. Generated via Python and matplotlib (Click to view larger version) Here we can see x264 has a much harder time at lower bitrates. Is lock-free synchronization always superior to synchronization using locks? The real question is HDR. H264 is very popular but much less optimized than VP9 or H265. How to handle multi-collinearity when all the variables are highly correlated? rev2023.3.1.43269. Declare your inputs. 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. Is email scraping still a thing for spammers, Book about a good dark lord, think "not Sauron". Connect and share knowledge within a single location that is structured and easy to search. What does a search warrant actually look like? Also that I always recommend crf over hard bitrate/filesize because it is really source dependent for saving the proper amount of quality. 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. For streams, use the URL and if needed, prepend extra flags (such as buffer sizes) as needed. Why did the Soviets not shoot down US spy satellites during the Cold War? However, Im really only dealing with 1080p rips Curious if you have any data on the difference between Medium and Slow settings at 1080p? You can speed up and slow down encoding ruins presets. I hope you found this information as useful as I did, if you have any thoughts or feedback please let me know! 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. 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. How to increase the number of CPUs in my computer? Keep in mind Im talking exclusively of x264 level 5.1+. 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. I tried encoding some 4K HDR files using Handbrake and they look washed out. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Even though others have tackled this issue, I wanted to use the same material I was already testing and make sure it held true with 4K HDR video. Let's take a look at what's needed to set up your stream for massively improved quality. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? . However, I head that this cap was removed. I did three CRF videos first, at 22, 20, and 18, then using their resulting bitrates created three ABR videos. Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". Add it next to your -c:v h264_nvenc -c:a ac3 You should also be able to push 2 sessions. Most time effective web format for converting h.265, The open-source game engine youve been waiting for: Godot (Ep. Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, How do I convert 10-bit H.265 / HEVC videos to H.264 without quality loss? It only takes a minute to sign up. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv
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