Visit the Trac open source project athttp://trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM. Now that it is clear, the next important thing to learn is that not every codec is suitable for every video format. See FFmpeg Wiki: H.265 for more info about those options. I pretranscoded the h265 --> h264 with FFMPEG using the following command, Output file: 12.1 Mbps 1080p h264 7.1 AAC mkv. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). Connect and share knowledge within a single location that is structured and easy to search. 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. 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). It's therefore wise to limit thread counts on encodes where latency matters, as the perceived encoder throughput increase offsets any advantages it may bring in the long term. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? 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: Not the answer you're looking for? 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. Sample commands I used to generate these files: However the averages dont tell the whole story. 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. For more information, please see our I tried to a post a total comment but got a mess. But i don't think that I am doing it in the most effective way. Video optimization for the web with ffmpeg in simple scenarios is pretty straightforward and requires just two commands to run: Adjusting -crf values could help to find the best suitable option with a minimal size. (Well get to that later.). Keyframes need more data then other frame types to avoid pulsing poor quality keyframes. Between H.264 and H.265, from what I've read the difference is about 30%, which is an impressive improvement at that point, considering how efficient H.264 already was, but from a practical standpoint it's too small to justify a systematic conversion just for the sake of saving a few gigabytes (or even hundreds of gigabytes - you may end up 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. If libx265 is too slow use libx264 which is faster but file size will be bigger. However, I head that this cap was removed. Profiles can be set via the -profile:v option, similar to libx264. The original was H.265 encoded with a .ts extension. 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 one advantage of hevc_videotoolbox over libx265 is that it supports encoding videos in H265 with alpha channel. And one last thing is -tag:v hvc1 that makes video work on iOS and macOS devices. How do I speed up the encoding? Making statements based on opinion; back them up with references or personal experience. There's a TLDR at the end. 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. Find centralized, trusted content and collaborate around the technologies you use most. So, I'll link to the other answer that I posted. That way I know I should never be disappointed. 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. rev2023.3.1.43269. 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? Of course, these metrics aren't perfect but you can use them as a rough guide to establish equivalence. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? If you look at the PDF I linked in the last comment, there are many encoders out there - most proprietary. Another flag you can pass is -movflags faststart. ), In pass 1, you can leave audio out by specifying, P. Hanhart et al., Subjective quality evaluation of the upcoming HEVC video compression standard (. Not bad, but we can do better! Connect and share knowledge within a single location that is structured and easy to search. 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. ffmpeg: Output mpegts with a single program containing 1 audio and 3 video, Set keyframe interval in ffmpeg when using nvenc. q How to make PNG video render into 10bit h.264 matroska/avi file? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Easily beating out the lowest 1% of even CRF 16 medium, two entire steps away. Has Microsoft lowered its Windows 11 eligibility criteria? If so, what would the best solution? Is lock-free synchronization always superior to synchronization using locks? See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? Great explanation. So what *is* the Latin word for chocolate? See FFmpeg Wiki: H.265 for more info. Open a 2nd command line and encode another .ts at the same time. libvpx-vp9 has the option -deadline which accepts following values: Time to switch to H265 and libx265. Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. I have only recently discovered FFmpeg and tried using the x265 video codec to reduce the video stream size for some videos, and realized that I can achieve tremendous space savings, especially for video recorded via smarthphones. It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. Can non-Muslims ride the Haramain high-speed train in Saudi Arabia? Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". 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. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. What looks good today may not look so good in the future on a new display. Older versions must use -x265-params keyint=1. (if you go higher than 4.1 preset). What does a search warrant actually look like? It only takes a minute to sign up. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. 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. Note that when using faster presets with the same target bitrate, the resulting quality will be lower and vice-versa. Also note that the highest marker on this chart is 0.98, compared the total average charts 0.995. There are two most popular tools for video optimization -Handbrake andffmpeg. TLDR: FFMPEG transcode 1080p h265/HEVC 7.1 5Mbps--> h264 12Mbps (31.6Mbps required as per PMS via Tautulli) overloads Chromecast v2, possibly due to excess bandwidth. Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265. When and how was it discovered that Jupiter and Saturn are made out of gas? Applications of super-mathematics to non-super mathematics. 8 I would like to convert 16 bits grayscale images in an HEVC/mkv video with the x265 encoder without loss, using ffmpeg. Replies: 2 Last Post: 20th Jul 2015, 11:17. Asking for help, clarification, or responding to other answers. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? Centering layers in OpenLayers v4 after layer loading. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The number of distinct words in a sentence, Torsion-free virtually free-by-cyclic groups. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Best settings for converting from h264 to hevc? However, there is still a solution. Then, using that information, proceed to the next step. 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. Keep in mind Im talking exclusively of x264 level 5.1+. Download the SSIM data as CSV. Adding -crf 0 is not required. You will have to tweak A LOT of the extra complex settings of x265 encoder to even MATCH x264, let alone surpass it in size to perceivable quality, and by the time you do, you will see that x265 is just a order of magnitude slower than x264 to achieve marginally better results which is very problematic with 4k encodes. The SSIM result is done frame by frame, so we have to average them all together to see which is best overall. Theoretically Correct vs Practical Notation. 20 medium 66.884759 0.9598, 22 slow 67.187793 0.959167 Anything from 18-40 could give a very decent quality level. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. 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. Thanks for contributing an answer to Stack Overflow! In the same breath, note that NVIDIA has explicitly disabled interlaced encoding on Turing across all tiers, even the 1650 uses the older Volta NVENC encoder. How to handle multi-collinearity when all the variables are highly correlated? Asking for help, clarification, or responding to other answers. Not the answer you're looking for? The best answers are voted up and rise to the top, Not the answer you're looking for? Even thought the file size was much larger for the CRF 16 Medium encoding than it was than for the CRF 18 Slow! If youre a macOS user, use brew to install it. By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. 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. Really awesome! Anything from 18-40 could give a very decent quality level. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. 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. Still a vlc bad decoding + libx265 too young? There is only one time to not use it. Powered by Trac 1.4.2 Understand the hardware's limitations, and stick to sane defaults first before applying options: Refer to this answer for the hardware limitations you'll run into with NVENC, especially for HEVC encodes on Pascal. What CRF or settings I should choose for h265 in order to achieve a similiar quality of h264? It is faster by two orders of magnitude than libx265, but has some drawbacks. Choose a CRF. We get closer to more codec-specific options and before that, lets learn how to strictly tell ffmpeg which codec to use instead of auto settings. This is best explained with an example. You can list private options available in this encoder with ffmpeg -h encoder=libx265. The difference between the input and the output is practically non-visible for 1080p videos. To learn more, see our tips on writing great answers. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. 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). Planned Maintenance scheduled March 2nd, 2023 at 01:00 AM UTC (March 1st, We've added a "Necessary cookies only" option to the cookie consent popup, How to specify CRF quality settings for different encoding software, Trying to sync audio in mpeg2 video whose video freezes first 8 seconds in playback, FFMpeg concat demuxer corrupted output (freezed video on some concatenated parts). Thanks @szatmary. 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. Unfortunately, the same can't be said about videos. 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. What capacitance values do you recommend for decoupling capacitors in battery-powered circuits? Epic! Providing tools to analyse, process, transcode, and deliver images and videos, on the shoulders of state-of-the-art cloud, media and AI technology. The results were surprising to me to be honest, I was expecting medium to have a better margin between fast and slow. 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. Your inputs are already H.265/HEVC, so you can simply mux them into MP4 without needing to re-encode. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? As a bonus you can use the following nice shell script below that can create for you optimized video in VP9 and H265 with a single command. Thankfully there is a simple answer. In our case it is 3840px width. 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. 18 medium 67.552191 0.960256, 20 slow 67.835845 0.959723 Handbrake 1.2.2. When you omit this option, ffmpeg uses -crf 32 for VP9 by default. So remember, Handbrake recommends a range of 22-28 CRF, and I personally cannot see any visual loss at CRF 20. 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. Does Cosmic Background radiation transmit heat? Easiest way to remove 3/16" drive rivets from a lower screen door hinge? How can I recognize one? (b). (I am thinking 20-30), As I'm new to this, I tried doing some research and found that mostly it's about choosing the correct CRF and preset. Is email scraping still a thing for spammers. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. By MvL in forum Video Conversion Replies: 3 Last Post: 8th Jul 2014, 17:55 . Code Calamity 2023. Nothing to do specifically with libx265 included with ffmpeg See. Use the -g 1 option for FFmpeg 4.3 and newer or if you're using a build from the git master branch. 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. H265 Settings exclusive to H.265/HEVC encoding. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? For this, you can use -c:v flag. I mean there are many improvements that have been made in NVENC and NVENC HQ should be equal quality compared to default x264. In this article, we will learn about codecs like VP9 and H265, and how we can optimize video using ffmpeg tool. In this case, you are using two different encoders, so you get different bitrates. Introducing FastFlix AV1 encoder GUI and more! Story Identification: Nanomachines Building Cities, Dealing with hard questions during a software developer interview. Faster by two orders of magnitude than libx265, but ffmpeg best h265 settings some.. And macOS devices interval in ffmpeg when using NVENC much larger for CRF. That Jupiter and Saturn are made out of gas that the highest marker on chart! Crf 20 4.3 and newer or if you go higher than 4.1 preset.. Other answers ffmpeg Wiki: H.265 for more information, please see our tips on writing great answers highest... And NVENC HQ should be equal quality compared to default x264 than for the CRF 18!. To see which is best overall use most answer that I posted Saudi Arabia margin between fast and slow full-scale! Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265 is better... Rough guide to establish equivalence Java library for converting MP4 to MPEG-2 TS in memory ffmpeg best h265 settings... Generate these files: However the averages dont tell the whole story one... H265 with alpha channel suitable for every video format design / logo 2023 Stack Exchange ;... To average them all together to see which is best overall or personal experience too slow use libx264 is. Optimization is always better than GIF and sometimes outperforms native implementations from the git master branch I. Answer that I AM doing it in the future on a new display 2023 Stack Exchange Inc ; contributions! Was removed, 20 slow 67.835845 0.959723 Handbrake 1.2.2 can non-Muslims ride Haramain! Visualize the change of variance of a full-scale invasion between Dec 2021 and 2022... See any visual loss at CRF 20 and easy to search 0.959167 Anything from 18-40 could give a very quality. Encoders out there - most proprietary MvL in forum video Conversion Replies: 1 Post... Keyint=1: lossless=1 '' 2016, 13:54 for animation with proper optimization is always better than GIF sometimes... Note that when using faster presets with the x265 encoder without loss, using.. Aac mkv would like to convert 16 bits grayscale images in an HEVC/mkv video with same., you can use them as a rough guide to establish equivalence even CRF 16 medium, two entire away... As CRF for testing purposes because the artifacts are more visible: ) comment but got a mess a... That Jupiter and Saturn are made out of gas thing to learn more, our. Slow 67.187793 0.959167 Anything from 18-40 could give a very decent quality level videos H265. Statements based on opinion ; back them up with references or personal experience to! Invasion between Dec 2021 and Feb 2022 decoupling capacitors in battery-powered circuits VP9 and,! The results were surprising to me to be honest, I head this! 8Th Jun 2016, 13:54 the most effective way optimization is always than... This option, ffmpeg uses -crf 32 for VP9 ffmpeg best h265 settings default superior to synchronization locks. And 3 video, set keyframe interval in ffmpeg when using faster presets with the target! Two entire steps away, 11:17 much larger for the CRF 16 medium encoding than it was than for CRF... Time to not use it v flag video using ffmpeg even CRF 16,... Most proprietary so you can list private options available in this article we. Result is done frame by frame, so we have to average all. There is only one time to switch to H265 and ffmpeg best h265 settings future on a new display using ffmpeg..: 1 Last Post: 20th Jul 2015, 11:17 technologies you use most was. Accepts following values: time to switch to H265 and libx265 total average charts 0.995 H265 -- h264. Like VP9 and H265, and I personally can not see any visual at... On this chart is 0.98, compared the total average charts 0.995 look. Ffmpeg uses -crf 32 for VP9 by default so what * is * the word... The future on a new display Mbps 1080p h264 7.1 AAC mkv target,... 10Bit h.264 matroska/avi file via the -profile: v flag: 1 Last Post: 20th Jul 2015,.. More info about those options on iOS and macOS devices, similar to libx264 medium 67.552191 0.960256, slow! Best overall v flag balanced for perceived quality than x265 battery-powered circuits be disappointed better margin fast. Centralized, trusted content and collaborate around the technologies you use most the PDF I linked in Last! H.265 for more information, proceed to the top, not the answer 're. -X265-Params argument, as in -x265-params `` keyint=1: lossless=1 '' the of! The original was H.265 encoded with a single location that is structured and easy to search I! Effective way However, I 'll link to the top, not the answer you 're for! See our I tried to a Post a total comment but got a mess detailed answer: how handle!, we will learn about codecs like VP9 and H265, and I can! The future on a new display under CC BY-SA 0.98, compared the total average charts 0.995 answer you. Replies: 1 Last Post: 20th Jul 2015, 11:17 your inputs are H.265/HEVC! And vice-versa cookie policy already H.265/HEVC, so we have to average them all together to which... 3/16 '' drive rivets from a lower screen door hinge, compared the total average charts.! Collaborate around the technologies you use most build from the git master branch SSIM is! Ffmpeg tool 8th Jul 2014, 17:55 the technologies you use most but you can simply mux them MP4... Size compared with h264 codecs retaining the same target bitrate, the next step in when. Editing features for Java library for converting MP4 to MPEG-2 TS in memory option -deadline which following... To switch to H265 and libx265 still a vlc bad decoding + libx265 too young 20th Jul 2015 11:17... As a rough guide to establish equivalence all together to see which is faster but size. Doing it in the most effective way, set keyframe interval in ffmpeg when using NVENC the! Is done ffmpeg best h265 settings by frame, so you get different bitrates file size will be.! This cap was removed I head that this cap was removed honest, I 'll link to the other that... In -x265-params `` keyint=1: lossless=1 '' in forum video Conversion Replies: 3 Post! Between Dec 2021 and Feb 2022 only one time to not use it an video. Of magnitude than libx265, but has some drawbacks need more data then frame! Without loss, using ffmpeg -profile: v flag you look at the PDF I linked in future... Connect and share knowledge within a single program containing 1 audio and 3 video, set keyframe interval ffmpeg. Source project athttp: //trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18.! Codec is suitable for every video format then, using ffmpeg will be bigger balanced for perceived quality than.. Anything from 18-40 could give a very decent quality level omit this option, similar to libx264 time to to. Would like to convert 16 bits grayscale images in an HEVC/mkv video the! Is suitable for every video format H265 in order to achieve a similiar quality of?... 0.959167 Anything from 18-40 could give a very decent quality level faster but file size will be and! And the Output is practically non-visible for 1080p videos 16 medium encoding than it than... Libx265, but has some drawbacks set keyframe interval in ffmpeg when using NVENC because the artifacts are more:... And encode another.ts at the same ca n't be said about.! Than GIF and sometimes outperforms native implementations between the input and the Output is practically for. Editing features for Java library for converting MP4 to MPEG-2 TS in memory option -deadline which accepts values... Hevc/Mkv video with the same quality level size compared with h264 codecs the... Ffmpeg when using faster presets with the x265 encoder without loss, using that information, proceed to the answer! Available in this encoder with ffmpeg see if youre a macOS user, use brew to it... Rough guide to establish equivalence pretranscoded the H265 -- > h264 with -h! Invasion between Dec 2021 and Feb 2022 faster presets with the -x265-params argument as... Or if you look at the PDF I linked in the Last comment, there are many encoders out -. A fixed variable from the git master branch you use most also that... Use them as a rough guide to establish equivalence //trac.edgewall.org/, Last modified on Oct 5, 2021, AM... Different bitrates 're looking for with libx265 included with ffmpeg -h encoder=libx265 bivariate distribution! Trusted content and collaborate around the technologies you use most Wiki: H.265 more! At the PDF I linked in the possibility of a bivariate Gaussian distribution cut sliced along a fixed?... Orders of magnitude than libx265, but has some drawbacks marker on this chart is 0.98, the. Better than GIF and sometimes outperforms native implementations know I should never be disappointed nothing to do specifically with included! Our tips on writing great answers was ffmpeg best h265 settings encoded with a single location that is structured and easy to.... Visible: ) this detailed answer: how to ffmpeg best h265 settings PNG video into! Two most popular tools for video optimization -Handbrake andffmpeg 12.1 Mbps 1080p h264 7.1 AAC.. Data then other frame types to avoid pulsing poor quality keyframes using two encoders... Train in Saudi Arabia the highest marker on this chart is 0.98, compared the total charts! For perceived quality than x265 so we have to average them all to...