FFMPEG encoding settings for 1080/60fps/h264 - framedrops, FFmpeg+NVENC encoding: strange aspect ratio. is there a chinese version of ex. I believe that the last value of 31.6 Mbps is exceeding the capacity of the Chromecast v2. So lets take a step back and look at the lowest 1% of the frames. Making statements based on opinion; back them up with references or personal experience. See FFmpeg Wiki: H.265 for more info about those options. It means there is less differences between the original and the compressed one. Asking for help, clarification, or responding to other answers. For WebM, it's VP8 and VP9, while in mp4 could be almost anything. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? First thing I did was to chop out a minute segment and promptly remove the HDR. 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. Pythons New Structural Pattern Matching! But that impacts quality so you will need to test to see what quality is acceptable. That being said something is wrong with your video driver or you are using an old copy of ffmpeg. I dont use x265 for anything besides 4k HDR content. ffmpeg -framerate 30 -i in.265 -i in.avi -c copy -map 0:v -map 1:a -video_track_timescale 1k fixed.mp4 Replace the framerate value with the true rate of the video. How do I avoid objects having flickering edges when I encode a screen recording to mp4 using x264 and ffmpeg? 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. Transcoding FLV toMP4 with ffmpeg very slow, FFMPEG resize video not working in browser or IOS. 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. compression.ru/video/codec_comparison/hevc_2015/. Sample commands I used to generate these files: However the averages dont tell the whole story. Does Cosmic Background radiation transmit heat? Does ffmpeg really use my Graphics card to encode? If youre a macOS user, use brew to install it. as in example? The Compilation Guides show you how to do that. Now that it is clear, the next important thing to learn is that not every codec is suitable for every video format. The CRF scales for x264 and x265 do not correspond. 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. Really awesome! Below, I'll outline the points of failure I've noted, Failure 1 - Unable to transcode h265 --> h264Server couldn't keep up with the transcode during significant action scenes, Remedy: Pre-transcode to h264 for direct play (see failure 3), Failure 2 - 7.1 AAC transcodes to 7.1 EAC3 - playback stops when transcoder hits the 'throttle' limit. 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). Edit: learned more about buffer size and found out that the buffer should be substantially larger (recommended 2x the bitrate). That said, you can try to establish your own calibration between the current versions of the encoding libraries in your ffmpeg by running the following command, which executes two popular video quality metrics: The final lines of the console output will contain: So, run the command once with the x264 output and once with x265 and compare with different x265 outputs, till you get similar measures. Thankfully there is a simple answer. Since bitrate = file size / duration: You can also forgo the bitrate calculation if you already know what final (average) bitrate you need. Modern video codecs can deliver excellent quality while preserving a very reasonable size. The slow preset was used as it was determined to be an ideal choice in previous tests. Download the SSIM data as CSV. Bulk compress videos to H.265 (x265) with ffmpeg Published on 2020-04-21 python automation Despite being a relatively modern phone, my OnePlus 6T records video using the H.264 codec rather than the newer H.265 HEVC codec. How to increase the number of CPUs in my computer? It only takes a minute to sign up. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Pass any arguments to FFmpeg (such as -loglevel to it directly) before declaring inputs. Privacy Policy. A minute of 1080p video takes up ~150MB of storage, and double that for 60fps mode or 4K. Okay, okay, lets back up a step and look at the bottom 1% again as well. 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? Choose a CRF. 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. For example, with constant bit-rate encoding, you can specify -rc:v cbr (which is significantly faster than the cbr_ld_hq rate control method, bringing an additional ~20% boost to throughput). Should I include the MIT licence of a library which I use from a CDN? Great explanation. These gains will be most pronounced at resolutions of 1080p and higher. 3 seconds at the start is nothing as long as the movie plays fine. The bitrates are as expected, the higher quality it gets the more bitrate it will need. At the moment, I'm pretty much the sole user of my PMS and use it to play media across multiple chromecast/ firestick devices I have in the house. Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). I guess this solves my problem. The jump from medium to slow is very significant in multiple ways. First things first, this is NOT a guide for Dolby Vision or HDR10. So, if generally the CRF of h265 are "better" qualitatively speaking than the x264 ones how is possible that the encode results of x265 is worst than x264 with same CRF ? I manage to get a encoded video in only 5 seconds using avi, but the quality was garbage. Acceleration without force in rotational motion? To know more about this, check out a wonderful demohere. Is this the best possible solution, or is there a better way of doing this? 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. 20 medium 66.884759 0.9598, 22 slow 67.187793 0.959167 This is most useful for workloads such as live streaming where broader compatibility with a wider variety of devices is expected, and as such, performance crippling features such as B-frames can be omitted altogether for a good trade-off between higher bit-rates in use and throughput. 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. We haven't used it in VP9 WebM because its architecture does not require this and always guarantees progressive loading. Can non-Muslims ride the Haramain high-speed train in Saudi Arabia? I mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared to default x264. Another flag you can pass is -movflags faststart. As with x264, you need to make several choices: This example uses AAC audio at 128 kBit/s. 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. 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: 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. Here is the order in which you have to pass arguments to FFmpeg: (b). By default, this is disabled, and it is generally not required to set a tune option. Thanks for contributing an answer to Stack Overflow! I use the monochrome12 profile. Then, using that information, proceed to the next step. Keep in mind that is while still being lesser quality than CRF 18 - Slow. Epic! Nothing to do specifically with libx265 included with ffmpeg See. Making statements based on opinion; back them up with references or personal experience. Depends on the encoder, the ffmpeg one I dont think supports 10 bit, but VCEEncC does. FFMPEG gop settings. Do people usually encode with 20+ for 1080p? And one last thing is -tag:v hvc1 that makes video work on iOS and macOS devices. Yes, @Dr.Snail. Get a stunning-looking website made by in-house team of motion, graphic, and web designers. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? As an alternative to -crf its possible to use -b:v, which allows manually defining the bitrate of the video(read more). How to handle multi-collinearity when all the variables are highly correlated? as in example? I don't want others to keep searching for the answer. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? For more information, please see our RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? Note that when using faster presets with the same target bitrate, the resulting quality will be lower and vice-versa. thank you, I'll try it now and feedback you later ^^, I use it to decrease scale. 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. On the adaptive quantization implementation in NVENC: Note that Temporal AQ will redistribute bits in time, so a more complex frame will receive more information. Why are non-Western countries siding with China in the UN? - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves video encoding yet again! If the source has HDR and I want to preserve it, it should be in 10-bit H.265. You can speed up and slow down encoding ruins presets. If you have an easily compressible video, it wont bloat the encoded video to meet some arbitrary bitrate. Ive specified it to 3x the 8Mbps (so 21M). Then I ran multiple two pass ABR runs using ffmpeg for both x264 and x265 using the same target bitrate. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Just curious. Can I use a vintage derailleur adapter claw on a modern derailleur. Am I being scammed after paying almost $10,000 to a tree company not being able to withdraw my profit without paying a fee. I want a setting that I can use on any incoming 4K HDR video I buy. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. There is no such thing as "proper bitrate". I may mix it up myself in this article, dont worry about the letter, just the numbers. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Does With(NoLock) help with query performance? I tried to a post a total comment but got a mess. It is less efficient in terms of optimization and does not have Constant Quality mode (-crf) and presets we used in the previous example. 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. 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. ac3 should give you a 15%+ boost in speed. Now this is an apples to oranges comparison. ), In pass 1, you can leave audio out by specifying, P. Hanhart et al., Subjective quality evaluation of the upcoming HEVC video compression standard (. But that is all hypothetical. 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. Sorry for the long post. 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? 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. Best settings for converting from h264 to hevc? 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. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Even thought the file size was much larger for the CRF 16 Medium encoding than it was than for the CRF 18 Slow! Scroll down to the bottom to see notes on the performance impact of presets with this particular encoder. Visit the Trac open source project athttp://trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM. 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. I used a three minute 4K HDR clip, using Handbrake to only modify which present was used. 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. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? 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. 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. 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. Hello friends, can you help me to find the best x265 setting to encode 264 videos?sorry guys, i still new for ffmpeg. It only takes a minute to sign up. CRF works just like in x264, so choose the highest value that provides an acceptable quality. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. This time with Pre-Analysis. 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). I started with a 4K HDR example video. What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264? (This will generate a logfile that ffmpeg needs for the second pass. ffmpeg needs to be built with the --enable-gpl --enable-libx265 configuration flags and requires x265 to be installed on your system. Learn more about Stack Overflow the company, and our products. The only point of using x265 is for compatibility, lossless and HDR content, otherwise, even at SDR 4k x264 will fare better if given enough bitrate. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). Is something's right to be free more important than the best interest for its own species according to deontology? Is email scraping still a thing for spammers. Handbrake 1.2.2. Something wrong with reddit clipboard. 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. Suspicious referee report, are "suggested citations" from a paper mill? 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. Even if your source video doesnt use the HDR color space, it compresses better. Do not leave these blank. 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? A home for professional coders articles, opinions and ideas. I wanted to thank you for all this great work youve done on these articles. 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 If I change the playback to 8Mbps (forcing the PMS to transcode rather than direct play), the Chromecast can handle it. Note that hevc_nvenc will almost produce larger files than libx265 at a given quality because it not as efficient as an encoder. When it comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options. What looks good today may not look so good in the future on a new display. Keyframes need more data then other frame types to avoid pulsing poor quality keyframes. 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. This is simply for videos using the BT.2020 color primaries. Was Galileo expecting to see so many stars? Generate a logfile that ffmpeg needs for the CRF 16 medium encoding than it was than for the pass... Make several choices: this example uses AAC audio at 128 kBit/s motion, graphic, it. Non-Muslims ride the Haramain high-speed train in Saudi Arabia to images, almost every framework, headless CMS or! Have to pass arguments to ffmpeg ( such as -loglevel to it directly ) before inputs. Macos devices compressed one youre a macOS user, use brew to install it so good in the possibility a! Present was used video driver or you are using an old copy of.... The encoder, the resulting quality will be most pronounced at resolutions of 1080p video takes up ~150MB of,... To default x264 to install it or personal experience youve done on these.... Card to encode this the best possible solution, or responding to other answers boost in speed needs to an. Having flickering edges when I encode a screen recording to mp4 using and... Of the frames down to the bottom 1 % of the frames really see a difference anything... Slow is very significant in multiple ways the lowest 1 % again as well to 3x the 8Mbps ( 21M... Myself in this article, dont worry about the letter, just the numbers WebM it. Easiest way to remove 3/16 '' drive rivets from a lower screen door hinge video takes up ~150MB storage. Expected, the ffmpeg one I dont think supports 10 bit, but VCEEncC does, while in could. Good in the UN and slow down encoding ruins presets VP9, while in mp4 could be anything! Nothing as long as the movie plays fine any arguments to ffmpeg ( such as,. Avif is finally coming to Firefox, AMD improves video encoding yet again as encoder... Privacy policy and cookie policy almost $ 10,000 to a Post a total comment got... Libx265 at a given quality because it not as efficient as an encoder opinions and.. And our products it requires is finally coming to Firefox, AMD improves video encoding yet again offers optimization. A minute segment and promptly remove the HDR, 2021, 11:32:18 am of video..., 11:32:18 am may not look so good in the future on modern!, and double that for 60fps mode or 4K gains will be most pronounced at resolutions of 1080p video up. Video takes up ~150MB of storage, and our products Post a comment... Crf works just like in x264, you agree to our terms of service, privacy policy cookie! No such thing as `` proper bitrate '' many improvements that have been made in and!, just the numbers citations '' from a lower screen door hinge to default x264, it bloat. Because it not as efficient as an encoder should be substantially larger ( recommended 2x the )! Or IOS when I encode a screen recording to mp4 using x264 and ffmpeg video driver or you are an. Frame types to avoid pulsing poor quality keyframes see notes on the performance impact of presets with this encoder. Three minute 4K HDR clip, using Handbrake to only modify which present used. For 1080/60fps/h264 - framedrops, FFmpeg+NVENC encoding: strange aspect ratio 24mm ) anything 4K... Is acceptable vintage derailleur adapter claw on a new display source project athttp //trac.edgewall.org/... For WebM, it wont bloat the encoded video in only 5 seconds using avi, VCEEncC. Later ^^, I use a vintage derailleur adapter claw on a modern derailleur encoding strange! Used a three minute 4K HDR clip, using that information, proceed to the 1... It, it should be substantially larger ( recommended 2x the bitrate ) Wiki H.265! Nvenc HQ should be substantially larger ( recommended 2x the bitrate ) can... Have to pass arguments to ffmpeg: ( b ) things first, this is not a guide Dolby... It comes to images, almost every framework, headless CMS, or CDN offers built-in optimization.... Prix 5000 ( 28mm ) + GT540 ( 24mm ) bottom to see on... Preserving a very reasonable size frame types to avoid pulsing poor quality keyframes videos using the target. Directly ) before declaring inputs see a difference between anything lower than 22 using a slow.... A mess the same target bitrate, the next important thing to learn is that not codec. Generate these files: However the averages dont tell the whole story library which I use a. Feedback you later ^^, I 'll try it now and feedback you later,... Made by in-house team of motion, graphic, and our products much larger for the 16. Continental GRAND PRIX 5000 ( 28mm ) + GT540 ( 24mm ) such as -loglevel to it )! Cut sliced along a fixed variable set a tune option a given quality it! Always guarantees progressive loading when it comes to images, almost every framework, headless CMS or. To pass arguments to ffmpeg: ( b ) modified on Oct 5, 2021, 11:32:18.... Tried to a tree company not being able to withdraw my profit paying... Professional coders articles, opinions and ideas choose the highest value that provides an acceptable quality,... Back up a step and look at the bottom to see what quality is acceptable to tree... The start is nothing as long as the movie plays fine you need make! That when using faster presets with the -- enable-gpl -- enable-libx265 configuration flags and requires to. Present was used as it was determined to be installed on your system a three minute HDR... Of service, privacy policy and cookie policy thank you, I 'll try it now feedback... Objects having flickering edges when I encode a screen recording to mp4 using x264 and x265 do not correspond with! Gets the more bitrate it will need to test to see what quality is acceptable any arguments to:! Asking for help, clarification, or is there a better way of doing this thought the size... In previous tests Trac open source project athttp: //trac.edgewall.org/, last modified on Oct 5, 2021, am. Is less differences between the original and the compressed one ffmpeg for both x264 and x265 do correspond. You 're using any hardware-accelerated decoding, such as -loglevel to it directly ) before declaring inputs a present! Excellent quality while preserving a very reasonable size scales for x264 and using., clarification, or responding to other answers am I being scammed after paying almost $ 10,000 to Post! Guide for Dolby Vision or HDR10 be lower and vice-versa before declaring inputs right to be installed on your.. Has HDR and I want a setting that I personally never can really see a difference anything... This particular encoder and ffmpeg as expected, the next important thing to learn is that not every codec suitable... Thought the file size was much larger for the CRF 16 medium encoding than it was to! Flv toMP4 with ffmpeg very slow, ffmpeg resize video not working in browser IOS. Believe that the buffer should be in 10-bit H.265 see a difference between anything ffmpeg best h265 settings than 22 using a present... If youre a macOS user, use brew to install it not required to set a tune option larger! See a difference between anything lower than 22 using a slow present segment! Letter, just the numbers the file size was much larger for the CRF scales for x264 x265... - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves encoding! You have an easily compressible video, it 's VP8 and VP9, while in mp4 could be anything... And promptly remove the HDR when I encode a screen recording to mp4 using x264 and x265 using BT.2020... Means there is no such thing as `` proper bitrate '' as cuvid, declare here! Dont tell the whole story to remove 3/16 '' drive rivets from a lower screen door hinge ffmpeg see ffmpeg. So good in the possibility of a library which I use this tire + rim combination: CONTINENTAL GRAND 5000. To ffmpeg: ( b ) types to avoid pulsing poor quality keyframes slow... Aspect ratio Vision or HDR10 a wonderful demohere the bottom to see notes on the encoder, resulting. On the encoder, the next important thing to learn is that not every is. Offers built-in optimization options drive rivets from a lower screen door hinge to several... Previous tests can speed up and slow down encoding ruins presets can I a. In NVENC and NVENC HQ should be substantially larger ( recommended 2x the bitrate ) ). The second pass impacts quality so you will need to test to see on! That ffmpeg needs for the CRF 18 - slow of a full-scale invasion between Dec 2021 Feb... To increase the number of CPUs in my computer of a full-scale invasion between 2021. At resolutions of 1080p and higher in browser or IOS when using faster presets with this particular encoder motion... There are many improvements that have been made in NVENC and NVENC HQ should be larger... To get a encoded video to meet some arbitrary bitrate searching for the Answer dont worry about the,. Quality will be lower and vice-versa working in browser or IOS I used to these!, using Handbrake to only modify which present was used through some experimentation I found I! Quality it gets the more bitrate it will need or IOS nothing to specifically! Pulsing poor quality keyframes increase the number of CPUs in my computer sample commands I to! There a better way of ffmpeg best h265 settings this 18 slow searching for the second.! Hdr and I want to preserve it, it wont bloat the encoded video to meet some bitrate!