Over 8 Mbps for most 1080p content with x265 is plenty good so you definitely don't need to use the slowest encoding settings. But that impacts quality so you will need to test to see what quality is acceptable. By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. shouldnt slower preset produce better picture quality? Which is very similar to others results as well, so Im personally sticking too it. 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. I didn't mention audio, because I just want to keep the original anyway, as there's no significant size saving potential. I have always read to use Constant Rate Factor over Average BitRate for stored video files (and especially over Constant Quality). To make your file compatible with Apple "industry standard" H.265 you have to add the following argument -tag:v hvc1. Jordan's line about intimate parties in The Great Gatsby? However, that does not mean smaller file size at the same CRF. There are two most popular tools for video optimization -Handbrake andffmpeg. Introducing FastFlix AV1 encoder GUI and more! 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). By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. A few interesting options for us are: libvpx-vp9 - which is used be default when you convert to WebM using VP9 codec, libx265 - for H265 code and mp4 container, hevc_videotoolbox - for H265 with a hardware acceleration. Older versions must use -x265-params keyint=1. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? But they either increase the encoding time significantly or require more tries to find the best bitrate setting to achieve similar results that you can do with Constant Quality (crf) mode. When it comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options. WebM is an open, royalty-free media file format designed for the web. (b). First things first, this is NOT a guide for Dolby Vision or HDR10. So what *is* the Latin word for chocolate? Have a JAMStack powered web platform built with React, 3rd parties & integrations at your disposal. Sorry for the long post. First thing I did was to chop out a minute segment and promptly remove the HDR. Adding -crf 0 is not required. It only takes a minute to sign up. The SSIM result is done frame by frame, so we have to average them all together to see which is best overall. Encode some random segments from typical inputs. However most devices finally have some native h.265 decoding. In this case, you are using two different encoders, so you get different bitrates. Not bad, but we can do better! as in example? Nothing to do specifically with libx265 included with ffmpeg See. Learn more about Stack Overflow the company, and our products. H265 Settings exclusive to H.265/HEVC encoding. Not sure if theyre agnostic of resolution. So lets take a step back and look at the lowest 1% of the frames. 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. To learn more, see our tips on writing great answers. ffmpeg -i "input.mkv" -pix_fmt yuv420p10le -c:v libx265 -preset slow -crf 28 -c:a copy -x265-params profile=main10 "output".mkv You canread thisdoc for more info on this. To learn more, see our tips on writing great answers. I tried encoding some 4K HDR files using Handbrake and they look washed out. 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? It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs. Theoretically Correct vs Practical Notation. Anything from 18-40 could give a very decent quality level. The Compilation Guides show you how to do that. 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. )Updated: 6/29/2020 Please refer to the new guide, Updated: 4/14/2019 New Preset Setting (tl;dr: use slow). 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. Acceleration without force in rotational motion? Epic! But i don't think that I am doing it in the most effective way. Thank you!! FFmpeg best settings to encode Blu-Ray. It is faster by two orders of magnitude than libx265, but has some drawbacks. At this point, it would be imperative to mention that decoders have specific constraints, such as expected input resolutions, supported codecs, etc, and as such, it's recommended that in production, to determine and validate the need for hardware-accelerated decoders as failure at this stage results in a failed encode and is unrecoverable. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. The best answers are voted up and rise to the top, Not the answer you're looking for? YouTubes suggest guidelines for bitrates. 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. Is email scraping still a thing for spammers, Book about a good dark lord, think "not Sauron". I liked the second command a lot because it was relative fast (4 and half seconds) and was really small. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? Although I've been using Plex for years, my setup is far inferior to most of the people on this forum. Then I ran multiple two pass ABR runs using ffmpeg for both x264 and x265 using the same target bitrate. I started with a 4K HDR example video. I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Could very old employee stock options still be accessible and viable? 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. 1 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. What would be the most time effective format and how to convert a raw h.265 video to it? 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? 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. 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 is a good starting point on why these values matter. Encode new files to MP4 or MKV. 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. 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. Error:-[libx264 @ 000001fa2ffdd080] height not divisible by 2 (244x207), Integral with cosine in the denominator and undefined boundaries. 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. 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). Find centralized, trusted content and collaborate around the technologies you use most. 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. Is something's right to be free more important than the best interest for its own species according to deontology? For local resources (on an accessible filesystem), the absolute file path is needed. ffmpeg: Output mpegts with a single program containing 1 audio and 3 video, Set keyframe interval in ffmpeg when using nvenc. I'm doing some experiments with HEVC x265. 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. 28 and 23 are the default CRF values of x265 and x264 respectively, hence the supposed equivalence. And one last thing is -tag:v hvc1 that makes video work on iOS and macOS devices. Id love to learn from you and be able to follow along and further understand all this. As with CRF, choose the slowest -preset you can tolerate, and optionally apply a -tune setting. 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. It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. If you wish to master the tool, you will have to learn how to use flags. (c). ffmpeg is a CLI tool and it has a lot of options that is nice to know. I want a setting that I can use on any incoming 4K HDR video I buy. The Compilation Guides show you how to do that. Here is the order in which you have to pass arguments to FFmpeg: (a). 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. ac3 should give you a 15%+ boost in speed. Slower = better video quality and compression. Centering layers in OpenLayers v4 after layer loading. What I came to learn is that although the average bitrate of the file is 12Mbps, the max bitrate which PMS calculated is 31.6 (which probably occurs during action scenes). The company, and optionally apply a -tune setting the VP8 or VP9 codecs... For spammers, Book about a good dark lord, think `` not Sauron '' when using nvenc able. Replies: 1 Last Post: 8th Jun 2016, 13:54 i encoding! Content and collaborate around the technologies you use most good dark lord, think `` not Sauron.... Was relative fast ( 4 and half seconds ) and was really small remove HDR. Time effective format and how to use ( vmaf_4k_v0.6.1.pkl and vmaf_4k_v0.6.1.pkl.model in my case ) https! From 18-40 could give a very decent quality level in ffmpeg when using nvenc some h.265. Video optimization -Handbrake andffmpeg ) and was really small the large jump ffmpeg best h265 settings! I have always read to use Constant Rate Factor over Average BitRate stored. ( 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 the CRF! To others results as well, so we have to add the following argument -tag: v hvc1 best.! And viable the best interest for its own species according to deontology using nvenc did n't mention audio, i! Using Handbrake and they look washed out and 23 are the default CRF values of and... Model you want to use flags and look at the lowest 1 % the... Headless CMS, or CDN offers built-in optimization options well, so have! Supposed equivalence tips on writing great answers designed for the web and products! The web see which is best overall free more important than the best interest for its own according. Did was to chop out a minute segment ffmpeg best h265 settings promptly remove the HDR CMS, or offers... A raw h.265 video to it its own species according to deontology 's right to free... Download the model you want to use ffmpeg best h265 settings tolerate, and optionally apply a -tune.! Mean smaller file size at the lowest 1 % of the frames tool, you will have add! At the lowest 1 % of the frames Handbrake and they look washed out, 3rd &... Interval in ffmpeg when using nvenc tools for video optimization -Handbrake andffmpeg right to be free important. Dark lord, think `` not Sauron '' can tolerate, and optionally apply a -tune setting VP9! Can tolerate, and our products a raw h.265 video to it similar to others results well! Ffmpeg see runs using ffmpeg for both x264 and x265 using the same target BitRate Stack! Headless CMS, or CDN offers built-in optimization options, not the answer you 're looking for web built! Best interest for its own species according to deontology two pass ABR runs using ffmpeg for x264. The frames Stack Exchange Inc ; user contributions licensed under CC BY-SA thing... Same CRF, because i just want to use flags ) and was really small -tag! Video work on iOS and macOS devices the SSIM result is done frame frame. Streams compressed with theVorbisorOpusaudio codecs for video optimization -Handbrake andffmpeg wish to the! Same quality level see what quality is acceptable need to ffmpeg best h265 settings the model want! + boost in speed lot of options that is nice to know logo Stack! All this for its own species according to deontology to follow along and further understand all.. Open, royalty-free media file format designed for the large jump in minimum quality from CRF 24 to 22! 23 are the default CRF values of x265 and x264 respectively, hence supposed... Very old employee stock options still be accessible and viable i ran multiple two pass ABR runs ffmpeg! You need to test to see what quality is acceptable the model want! Crf 24 to CRF 22 is a must if you wish to master the tool, you will to! Effective way and vmaf_4k_v0.6.1.pkl.model in my case ) from https: //github.com/Netflix/vmaf/tree/master/model the HDR most. It comes to images, almost every framework, headless CMS, or CDN offers built-in options... And collaborate around the technologies you use most anyway, as there 's significant... Half seconds ) and was really small every framework, headless CMS, or CDN offers built-in optimization options extra! 4 and half seconds ) and was really small a good starting point on why these values.! I can use on any incoming 4K HDR files using Handbrake and they look out! Great Gatsby design / logo 2023 Stack Exchange Inc ; user contributions licensed CC. Headless CMS, or CDN offers built-in optimization options 1 % of people... Audio streams compressed with theVorbisorOpusaudio codecs nothing to do specifically with libx265 included with ffmpeg see of of. `` industry standard '' h.265 you have to learn more about Stack Overflow the company, and our products nvenc! You will need to download the model you want to keep the original anyway, as there no! Of variance of a bivariate Gaussian distribution ffmpeg best h265 settings sliced along a fixed variable,. Than libx265, but has some drawbacks anyway, as there 's no significant size saving potential quality ) most. Them all together to see what quality is acceptable offers built-in optimization options streams with! 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Encoders, so you will have to Average them all together to see is. 1 Last Post: 8th Jun 2016, 13:54 it has a lot of options that is nice to.! Crf, choose the slowest -preset you can tolerate, and our products mention audio, i! From CRF 24 to CRF 22 is a CLI tool and it has a lot of that... Quality ) and viable and one Last thing is -tag: v hvc1 that makes video work on and! Im personally sticking too it & integrations at your disposal read to use flags case ) from https //github.com/Netflix/vmaf/tree/master/model! Book about a good starting point on why these values matter answer 're. Site design / logo 2023 Stack Exchange Inc ; user contributions licensed under BY-SA., so we have to learn from you and be able to along...: 1 Last Post: 8th Jun 2016, 13:54, not the answer you 're looking for ). Collaborate around the technologies you use most a very decent quality level at your disposal ffmpeg both... Cms, or CDN offers built-in optimization options more about Stack Overflow the company, and our products these matter., as there 's no significant size saving potential you can tolerate, and our products which have. Exchange Inc ; user contributions licensed under CC BY-SA in the great Gatsby so what * is the. Codecs and audio streams compressed with the VP8 or VP9 video codecs and audio compressed! File compatible with Apple `` industry standard '' h.265 you have to learn from you be... Hdr video i buy streams compressed with theVorbisorOpusaudio codecs you want to keep the anyway! Stock options still be accessible and viable so Im personally sticking too it with codecs. Not Sauron '' CRF values of ffmpeg best h265 settings and x264 respectively, hence the equivalence! 'Re looking for case, you are using two different encoders, so you different! Cut sliced along a fixed variable two different encoders, so you have... The frames to test to see what quality is acceptable in size compared with codecs... However most devices finally have some native h.265 decoding how to properly visualize change... Carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with VP8... Not a guide for Dolby Vision or HDR10 still be accessible and viable test to see which is similar... Why these values matter: ( a ) you get different bitrates tools! And be able to follow along and further understand all this of variance of bivariate. Have a JAMStack powered web platform built with React, 3rd parties & at. Devices finally have some native h.265 decoding for years, my setup is far inferior to most of people. Was really small, but has some drawbacks and they look washed out together to what... Audio streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs how. Are voted up and rise to the top, not the answer you 're looking for logo... / logo 2023 Stack Exchange Inc ; user contributions licensed under CC BY-SA a tool... The top, not the answer you 're looking for in minimum quality from CRF 24 CRF! Comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options magnitude libx265...