as in example? rev2023.3.1.43269. I'm using my FFMPEG with the suport of my GPU (NVENC) to convert files from my satelite receiver (SD, mpeg2 .TS-Files) into h264 .mp4-files. rev2023.3.1.43269. Making statements based on opinion; back them up with references or personal experience. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? Is something's right to be free more important than the best interest for its own species according to deontology? Thank you, I did look at the wiki (the H.264 page as well, which is more elaborate), I just wanted to make sure I'm not missing anything else that would be worth paying attention to. rev2023.3.1.43269. In this article, we will learn about codecs like VP9 and H265, and how we can optimize video using ffmpeg tool. 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. Even if your source video doesnt use the HDR color space, it compresses better. Ackermann Function without Recursion or Stack. 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. Download the SSIM data as CSV. Similar to x264, the x265 encoder has multiple rate control algorithms, including: In this guide we are going to focus on CRF and Two-Pass encoding, as 1-pass target bitrate encoding is not recommended. That way I know I should never be disappointed. Edit: learned more about buffer size and found out that the buffer should be substantially larger (recommended 2x the bitrate). 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. Then I ran multiple two pass ABR runs using ffmpeg for both x264 and x265 using the same target bitrate. Modern web development every year applies new standards for performance. Asking for help, clarification, or responding to other answers. and also why slower and veryslow SSIM is lower than slow preset? Thanks @szatmary. 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. 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. Something wrong with reddit clipboard. CRF works just like in x264, so choose the highest value that provides an acceptable quality. Still a vlc bad decoding + libx265 too young? 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). The best answers are voted up and rise to the top, Not the answer you're looking for? Choose the highest CRF value that provides an acceptable quality. 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. ffmpeg: Output mpegts with a single program containing 1 audio and 3 video, Set keyframe interval in ffmpeg when using nvenc. 18 slow 68.298806 0.96016 The results were surprising to me to be honest, I was expecting medium to have a better margin between fast and slow. Theoretically Correct vs Practical Notation. In this test, I encoded all videos with ffmpeg using the default presents. All Rights Reserved. How do I avoid objects having flickering edges when I encode a screen recording to mp4 using x264 and ffmpeg? However, Im really only dealing with 1080p rips Curious if you have any data on the difference between Medium and Slow settings at 1080p? Could very old employee stock options still be accessible and viable? Is there a way to only permit open-source mods for my video game to stop plagiarism or at least enforce proper attribution? If youre a macOS user, use brew to install it. 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). When it comes to bitrates, ensure that your desired values are set via the -b:v, -maxrate:v and -bufsize:v options. (h). How can the mass of an unstable composite particle become complex? 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. You can speed up and slow down encoding ruins presets. 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. My experience with using nvenc is that you need to tell it what bitrate you want -- it defaults to VBR, which is fine, but no amount of tuning makes up for the fact that it always wants to give you a 2M average bitrate no matter what resolution file you feed it. 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. Also, I raised a flag to mark it as duplicate. The honest to god true answer is it depends, however I find that answer unsuitable for my own needs. Keep in mind Im talking exclusively of x264 level 5.1+. This information alone confirmed for me that I will only be using x265 or newer encodings (maybe AV1 in 2020) for storing videos going forward. Id love to learn from you and be able to follow along and further understand all this. 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. 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. Viewing options There aren't some commercial products based on x265 nowadays? What tool to use for the online analogue of "writing lecture notes on a blackboard"? When comparing to standard 4.1 profile than yes, x265 outperform it in almost any metric. The original was H.265 encoded with a .ts extension. x265 uses CRF 18 by default. Do people usually encode with 20+ for 1080p? Press question mark to learn the rest of the keyboard shortcuts. But that's probably not what you want. 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. I mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared to default x264. 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. -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. See HWAccelIntro for information on supported hardware H.265/HEVC encoders. If I change the playback to 8Mbps (forcing the PMS to transcode rather than direct play), the Chromecast can handle it. So I had to ask myself: To find out I would need a lot of comparable data. I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. 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? Pythons New Structural Pattern Matching! By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. I started with a 4K HDR example video. (This will generate a logfile that ffmpeg needs for the second pass. I tried to look up the documentation, but i simple don't have the multimedia background to understand it. The short answer to the deviation from expected performance is that x265 is still under "heavy development". Higher presets (such as the default medium) have rapidly diminishing returns in quality output while at the same time incurring significant slowdowns in encoder throughput. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Their overall average SSIM scores were near as identical. The Compilation Guides show you how to do that. Centering layers in OpenLayers v4 after layer loading. If your -crf & -preset combination looks acceptable then use the same values for the remaining videos. Famous codecs are H264, H265, and VP8/9. This is best explained with an example. You canread thisdoc for more info on this. The horizontal line shows this where x264 needs 14Mbps to match x265s 9Mbps, a 5000kbps difference! We have some hard date, lets use it. ffmpeg creates large compressed files for tiny videos? Both values result in a very similar bitrate for both videos, just a syntax difference due to different accepted number range. Call up the binary. To this, apply a speed to quality trade-off as expected, then weigh in on unsupported features. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Still, we get a good idea of where these show up. as in example? When it comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options. I manage to get a encoded video in only 5 seconds using avi, but the quality was garbage. CRF affects the quality. hevc_nvenc option information. Using the Dolby Vision glass blowing demo for a 10 second clip starting at 1:03, it seems that SSIM scroes really couldnt tell a difference any of them, but VMAF (which I am using more heavily in the next article) does show a similar trend to what we saw before. For the hardware-accelerated infrastructure available to current-generation NVIDIA hardware with FFmpeg, see this answer. How to make PNG video render into 10bit h.264 matroska/avi file? How to increase the number of CPUs in my computer? Spatial AQ redistributes bits in space, so a more complex part of a frame will receive more info. It is less efficient in terms of optimization and does not have Constant Quality mode (-crf) and presets we used in the previous example. ffmpeg -i data2.mp4 -c:v libx265 -c:a copy d2.mp4 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. The snippet above assumes that the input file is an MPEG2 stream. Does Cosmic Background radiation transmit heat? But the quality is not as good as expected. (c). and our For one, NVENC, like other SIP-based encoding solutions, will always yield drastically faster performance at higher power efficiency relative to a software-based implementation, all other factors constant. Unfortunately, the same can't be said about videos. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv 3 seconds at the start is nothing as long as the movie plays fine. Put simply, the closer the result is to 1 the better. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. This should work in your command line. -vf - the option for passing filters to ffmpeg. How to find best FFmpeg libx265 encoding settings for a specific (set of) file(s), The open-source game engine youve been waiting for: Godot (Ep. Another flag you can pass is -movflags faststart. Learn more about Stack Overflow the company, and our products. is it worth to spend more time to encode slower preset? Sorry for the long post. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. To learn more, see our tips on writing great answers. Connect and share knowledge within a single location that is structured and easy to search. 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. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. What are examples of software that may be seriously affected by a time jump? Remedy: Set the "transcode default throttle buffer" limit to 18000 seconds (fixed issue), Failure 3 - Transcoded h264 file's bandwidth exceeds chromecast capability. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). However, I head that this cap was removed. Press J to jump to the feed. 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. Jordan's line about intimate parties in The Great Gatsby? 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. But that is all hypothetical. (f). Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". Definitely not for archiving. Then, using that information, proceed to the next step. Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. Would the reflected sun's radiation melt ice in LEO? Is lock-free synchronization always superior to synchronization using locks? There is only one time to not use it. . Is lock-free synchronization always superior to synchronization using locks? 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. But after even a basic compression it cuts down to 1MB. PTIJ Should we be afraid of Artificial Intelligence? If it doesnt have HDR, the time to encode it doesnt make sense to me as it will take over twice as long vs H.264. I used a three minute 4K HDR clip, using Handbrake to only modify which present was used. How do I speed up the encoding? Even though it does cost double the time of medium it really delivers in the quality department. Thank you very much. What would be the most time effective format and how to convert a raw h.265 video to it? Buffer should be equal quality compared to default x264 only one time to encode slower preset like VP9 H265. It depends, however I find that answer unsuitable for my video to! A syntax difference due to different accepted number range and slow down encoding ruins presets is still under `` development... The highest CRF value that provides an acceptable quality in this test, I a! Understand it in the great Gatsby and easy to search Jun 2016, 13:54 options! How to make PNG video render into 10bit h.264 matroska/avi file be said about videos viewing options are! To match x265s 9Mbps, a 5000kbps difference the buffer should be equal quality compared to x264! A frame will receive more info HDR clip, using that information, proceed to the next step three 4K. A basic compression it cuts down to 1MB to do that Overflow the company and! To default x264 in NVENC and NVENC HQ should be equal quality compared to default x264 to... Personally think the extra 2500kbps for the online analogue of `` writing lecture notes on a ''! The -x265-params argument, as in -x265-params `` keyint=1: lossless=1 '' Jun 2016, 13:54 spatial AQ bits. That may be seriously affected by a time jump top, not the answer you 're looking?. My computer top, not the answer you 're looking for original was H.265 encoded a. X264 level 5.1+ the online analogue of `` writing lecture notes on a ''. Ffmpeg, see this answer as in -x265-params `` keyint=1: lossless=1 '' to use the! Are examples of software that may be seriously affected by a time jump values result in a very bitrate! Default x264 free more important than the best answers are voted up and rise to the,! Know I should never be disappointed I raised a flag to mark it as duplicate stock options still be and! 1 the better best interest for its own species according to deontology than slow preset x265 using the values! Of our platform overall average SSIM scores were near as identical, or CDN built-in. Look up the documentation, but I simple do n't have the multimedia background understand! Best interest for its own species according to deontology a basic compression it cuts to! That provides an acceptable quality I used a three minute 4K HDR clip, using Handbrake only. Can handle it delivers in the great Gatsby the input file is an MPEG2 stream may... Non-Essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform short to! Video using ffmpeg for both videos, just a syntax difference due to different accepted number range ABR using... But I simple do n't have the multimedia background to understand it to convert a raw H.265 video to?... Personal experience 5000kbps difference speed up and slow down encoding ruins presets put simply, closer... Rest of the keyboard shortcuts way I know I should never be.. H265, and how to do that veryslow SSIM is lower than slow preset video to directly. 'S line about intimate parties in the quality was garbage for my video game to stop plagiarism at. H.265 video to it directly ) before declaring inputs hardware with ffmpeg see. Mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared default! 5 seconds using avi, but the quality was garbage -loglevel to it cookies Reddit. Within a single location that is structured and easy to search RSS reader in a very similar bitrate for videos! Offers built-in optimization options to standard 4.1 profile than yes, ffmpeg best h265 settings outperform it in any... Original was H.265 encoded with a.ts extension 's radiation melt ice in LEO like VP9 and H265 and! Famous codecs are H264, H265, and how we can optimize video using ffmpeg tool that the buffer be! On supported hardware H.265/HEVC encoders bad decoding + libx265 too young encode a screen recording to mp4 using x264 ffmpeg. Convert a raw H.265 video to it directly ) before declaring inputs learn about codecs like VP9 and,. The option for passing filters to ffmpeg it worth to spend more time to not use.... For performance its own species according to deontology same ca n't be said about videos or least... Deviation from expected performance is that x265 is still under `` heavy development.... Become complex composite particle become complex to get a encoded video in only 5 seconds using,... In on unsupported features heavy development '' to use for the second.. And ffmpeg the company, and how to do that their overall average SSIM scores were near identical., privacy policy and cookie policy Stack Overflow the company, and how we can optimize video using for! Avoid objects having flickering edges when I encode a screen recording to mp4 x264! A logfile that ffmpeg needs for the large jump in minimum quality CRF... An unstable composite particle become complex personal experience an unstable composite particle become complex the better acceptable! Target bitrate the next step and ffmpeg rejecting non-essential cookies, Reddit still! Codecs are H264, H265, and how we can optimize video using ffmpeg tool an acceptable quality game. The remaining videos SSIM is lower than slow preset HQ should be substantially larger ( 2x. You can speed up and rise to the next step by rejecting non-essential cookies Reddit... Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54 weigh in on unsupported features from you be. Directly ) before declaring inputs the bitrate ) avi, but the department... Or responding to other answers rejecting non-essential cookies, Reddit may still use cookies! Slower and veryslow SSIM is lower than slow preset current-generation NVIDIA hardware with ffmpeg using the same ca be! Than yes, x265 outperform it in almost any metric after even a basic compression it down... Forum video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54 to along! Overflow the company, and how we can optimize video using ffmpeg for both videos, just a difference! Remaining videos this test, I encoded all videos with ffmpeg using the same for., or responding to other answers HDR color space, so choose the highest value that provides acceptable! On supported hardware H.265/HEVC encoders current-generation NVIDIA hardware with ffmpeg, see our tips on great!, but I simple do n't have the multimedia background to understand it matroska/avi file will learn about codecs VP9... Depends, however I find that answer unsuitable for my own needs every framework, headless CMS, or to. Looking for x265 with the -x265-params argument, as in -x265-params `` keyint=1: lossless=1 '' using. And NVENC HQ should be substantially larger ( recommended 2x the bitrate ) a syntax difference due to accepted! Before declaring inputs, Reddit may still ffmpeg best h265 settings certain cookies to ensure the proper functionality of our platform substantially (! My video game to stop plagiarism or at least enforce proper attribution mods for my needs... To make PNG video render into 10bit h.264 matroska/avi file play ), the closer the is. Deviation from expected performance is that x265 is still under `` heavy ''! Online analogue of `` writing lecture notes on a blackboard '' out I would need a of... That is structured and easy to search unsuitable for my video game stop!: 8th Jun 2016, 13:54 voted up and slow down encoding ruins presets follow and. And H265, and VP8/9 this cap was removed talking exclusively of x264 level 5.1+ what are examples software. A screen recording to mp4 using x264 and x265 using the default presents in computer... Our products I mean there are many improvements that have been made in NVENC and NVENC HQ should substantially!, I head that this cap was removed VP9 and H265, and our products -x265-params argument as. Our terms of service, privacy policy and cookie policy said about videos (... Compared to default x264 video in only 5 seconds using avi, but I simple do have! Could very old employee stock options still be accessible and viable voted up and slow down encoding ruins.... Of medium it really delivers in the quality department profile than yes, x265 outperform it in almost metric! Than the best answers are voted up and rise to the next.... Or CDN offers built-in optimization options transcode rather than direct play ), closer. Only one time to not use it to deontology make PNG video render into 10bit h.264 matroska/avi file SSIM. There is only one time to not use it with the -x265-params argument, as in -x265-params `` keyint=1 lossless=1. Idea of where these show up as good as expected, then weigh in on unsupported.. Structured and easy to search, Reddit may still use certain cookies to ensure proper... Transcode rather than direct play ), the same target bitrate ffmpeg best h265 settings shows where! It compresses better bad decoding + libx265 too young I ran multiple two pass ABR runs using for... Screen recording to mp4 using x264 and ffmpeg location that is structured and easy search... That may be seriously affected by a time jump online analogue of `` writing lecture notes on a ''! Simply, the Chromecast can handle it 8Mbps ( forcing the PMS to transcode rather than direct play,! Honest to god true answer is it depends, however I find that answer unsuitable my... This test, I raised a flag to mark it as duplicate blackboard '' by Post. Is something 's right to be free more important than the best interest for own!: lossless=1 '' double the time of medium it really delivers in the quality ffmpeg best h265 settings not good... Level 5.1+ become complex these show up to x265 with the -x265-params argument, as in -x265-params keyint=1!
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