I don't want others to keep searching for the answer. 31 is recommended for 1080p HD video: ffmpeg -i input.mp4 -c:v libvpx-vp9 -crf 31 -b:v 0 output.mkv 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. If so, what would the best solution? Nothing to do specifically with libx265 included with ffmpeg See. Not the answer you're looking for? Call up the binary. Not sure if theyre agnostic of resolution. (d). Ive specified it to 3x the 8Mbps (so 21M). Consider your encoding workflow and adjust as necessary. Connect and share knowledge within a single location that is structured and easy to search. It is well known between pros that SSIM and PSNR are not good measures or SUBJECTIVELY PERCEIVABLE quality. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Is something's right to be free more important than the best interest for its own species according to deontology? Generated via Python and matplotlib (Click to view larger version) Here we can see x264 has a much harder time at lower bitrates. The number of distinct words in a sentence. (Well get to that later.). Thanks for contributing an answer to Video Production Stack Exchange! Anything from 18-40 could give a very decent quality level. Not bad, but we can do better! There is no such thing as "proper bitrate". How to increase the number of CPUs in my computer? The results were surprising to me to be honest, I was expecting medium to have a better margin between fast and slow. Was Galileo expecting to see so many stars? Put simply, the closer the result is to 1 the better. I've gone through this sub and tried to improve my transcodes, but I'm still not 100% there. Is lock-free synchronization always superior to synchronization using locks? - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves video encoding yet again! Both values result in a very similar bitrate for both videos, just a syntax difference due to different accepted number range. 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. However, I head that this cap was removed. What you want is a min quality level at resulting in a variable bit rate. Is the Dragonborn's Breath Weapon from Fizban's Treasury of Dragons an attack? There are two most popular tools for video optimization -Handbrake andffmpeg. 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 In fact, the MPV devs have mentioned this repeatedly, don't rely on hardware-accelerated decoding for mission-critical content delivery. 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). If you wanted to target 4 Mbps you'd want to be using veryslow for sure. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. FFmpeg best settings to encode Blu-Ray. 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. So using veryslow is more wise. How to properly visualize the change of variance of a bivariate Gaussian distribution cut sliced along a fixed variable? 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. Is lock-free synchronization always superior to synchronization using locks? ffmpeg has more video optimization settings available, such as Constrained Quality, Two-passes, Constant bitrate, and Lossless. Even if your source video doesnt use the HDR color space, it compresses better. Frameworks compete by optimizing network requests, images, and code to achieve a blazing-fast loading experience. Centering layers in OpenLayers v4 after layer loading. Zero-delay or sliced thread mode has no delay, but this option farther worsens multi-threads quality in supported encoders. Thank you very much. The original was H.265 encoded with a .ts extension. 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 ? -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. Handbrake 1.2.2. They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. I use both as .bat files. 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. But that's probably not what you want. Then in three years H.266 / VVC toolsets will probably be popping up. Attempting to do so will result in encoder initialization failure. 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. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. if you don't, the encoder will choose on for you. The short answer to the deviation from expected performance is that x265 is still under "heavy development". 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. Over 8 Mbps for most 1080p content with x265 is plenty good so you definitely don't need to use the slowest encoding settings. Do not leave these blank. Even thought the file size was much larger for the CRF 16 Medium encoding than it was than for the CRF 18 Slow! It makes your video web-optimized and results in faster video readiness. And embedding it to the project with this html getting the best possible result. 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. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. The absolute path to the output file. Powered by Trac 1.4.2 FFmpeg: For NVENC, what is a concurrent surface? Setting up NVENC (for Streaming) Modern OBS Studio has two ways to achieve the expected quality: the built-in NVENC H.264 (new) and the addition from StreamFX called NVIDIA NVENC H.264/AVC (via FFmpeg). Every modern browser on desktop and mobile supports it, except Safari on iOS. Thank you!! The open-source game engine youve been waiting for: Godot (Ep. Which is very similar to others results as well, so Im personally sticking too it. I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. Download the SSIM data as CSV. The CRF videos were done via Handbrake using x265 10-bit, whereas everything else was done via ffmpeg using x265 or x264 8-bit. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? Could the loss of quality be caused by VLC and its experimental support in deconding h265? Super User is a question and answer site for computer enthusiasts and power users. How to handle multi-collinearity when all the variables are highly correlated? Is email scraping still a thing for spammers. Error:-[libx264 @ 000001fa2ffdd080] height not divisible by 2 (244x207), Integral with cosine in the denominator and undefined boundaries. Depends on the encoder, the ffmpeg one I dont think supports 10 bit, but VCEEncC does. Modern web development every year applies new standards for performance. Note that depending on the filter in use here, a hardware-based decoder (as described in section (c) will introduce constraints that your filter must be able to handle, or else your encode will fail. So I had to ask myself: To find out I would need a lot of comparable data. The quality difference between llhp and llhq as measured by Netflix's VMAF is virtually negligible, yet the encoder's performance boost (over ~30% on my test bed) with the former is definitely appreciable. There is only one time to not use it. Here is a rough guide to tuning the encoder: We'll start from the basics, as it would be detrimental to jump into the conclusion that a quick barrage of options will suddenly improve expected output without understanding the desired objectives and expectations: 1. I started with a 4K HDR example video. If you are encoding to x264 or x265, encode to 10-bit if your devices support it. A minute of 1080p video takes up ~150MB of storage, and double that for 60fps mode or 4K. I use the monochrome12 profile. 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. To learn more, see our tips on writing great answers. It works if I specify the output bitrate, but I want to know how to figure out the proper bitrate? If youre a macOS user, use brew to install it. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. It only takes a minute to sign up. Constant Rate Factor over Average BitRate, Discover AWS State Machines using Python Lambdas for an ETL process. https://gist.github.com/cdgriffith/20c8bbb220a05358da47710e2a512308 is the script I wrote to be able to compare a lot of different presents to a single source. is it worth to spend more time to encode slower preset? We have some hard date, lets use it. 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. It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. To make your file compatible with Apple "industry standard" H.265 you have to add the following argument -tag:v hvc1. Whereas FFmpeg can deduce the required output format of a file depending on the selected extension of the output file, it is recommended to explicitly declare the output format (through the -f option) so that extra options can be passed to the underlying muxer if needed, as is often the case with streaming formats such as HLS, mpegts and DASH. Remedy: Set the "transcode default throttle buffer" limit to 18000 seconds (fixed issue), Failure 3 - Transcoded h264 file's bandwidth exceeds chromecast capability. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Can I use a vintage derailleur adapter claw on a modern derailleur. You can verify lossless encoding by looking for x265 [info]: lossless compression ratio in the console output from your encoding command, or refer to the hash demuxer for verification. Also note that the highest marker on this chart is 0.98, compared the total average charts 0.995. I tried encoding some 4K HDR files using Handbrake and they look washed out. Ive got the right version of FFmpeg with libvmaf but am having a hard time getting the right CLI parameters. 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. Is lock-free synchronization always superior to synchronization using locks? hevc_nvenc option information. I ran some quick tests this morning with a script I am using for a new version of this article using ffmpeg instead of Handbrake. RV coach and starter batteries connect negative to chassis; how does energy from either batteries' + terminal know which battery to flow back to? The best answers are voted up and rise to the top, Not the answer you're looking for? If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? 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. 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). The normal wisdom is to use the the slowest you can stand for the encoding time. I dont use x265 for anything besides 4k HDR content. Therefore I played it safe, bump it down a notch and just encode all of my stuff with x265 10-bit at CRF of 20 on Slow preset. Does With(NoLock) help with query performance? Should the results be the same, relatively? 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. Older versions must use -x265-params keyint=1. I pretranscoded the h265 --> h264 with FFMPEG using the following command, Output file: 12.1 Mbps 1080p h264 7.1 AAC mkv. 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. On the section of video I chose, x264 needed considerably more bitrate to achieve the same score. Ackermann Function without Recursion or Stack. (As a heads up h.265 is the specification, and x265 is encoder for it. Would the reflected sun's radiation melt ice in LEO? nodejs ffmpeg play video at specific time and stream it to client, ffmpeg mp4 video cannot be played in old tv, Duress at instant speed in response to Counterspell. as in example? Now this is an apples to oranges comparison. 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? Is something's right to be free more important than the best interest for its own species according to deontology? 28 and 23 are the default CRF values of x265 and x264 respectively, hence the supposed equivalence. Convert ffmpeg encoding from libx264 to h264_nvenc. 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. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. However, CRF shows its true edge on the lowest 1%, easily beating out ABR at every turn. The default is 28, and it should visually correspond to libx264 video at CRF 23, but result in about half the file size. Why did the Soviets not shoot down US spy satellites during the Cold War? Should I include the MIT licence of a library which I use from a CDN? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Libvorbis for audio seems slow. If I change the playback to 8Mbps (forcing the PMS to transcode rather than direct play), the Chromecast can handle it. I tried to a post a total comment but got a mess. 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. 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? Adding -crf 0 is not required. Transcoding FLV toMP4 with ffmpeg very slow, FFMPEG resize video not working in browser or IOS. If you require interlaced encoding support, please switch to Pascal or older SKUs instead. So lets take a step back and look at the lowest 1% of the frames. thank you, I'll try it now and feedback you later ^^, I use it to decrease scale. (c). Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. rev2023.3.1.43269. Server: MacBook Pro with 2.66GHz i7, 4GB DDR3Connection to router: 5GHz WiFiMonitored with Tautulli (PlexPy), Chromecast v2 --> Onkyo Receiver 7.1 setup --> 1080p Sony Projector, Chromecast v1 --> Yamaha Receiver 5.1 setup --> 1080p TV, Amazon Firestick --> Yamaha Receiver 5.1 setup --> 1080p TV, These are connected over 2.4 GHz, unfortunately, (I know, I'm running some seriously old components in heresome are a decade old. Video and audio streams inside these containers are multimedia data encoded with codec. 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. H265 Settings exclusive to H.265/HEVC encoding. Although I've been using Plex for years, my setup is far inferior to most of the people on this forum. Why did the Soviets not shoot down US spy satellites during the Cold War? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Acceleration without force in rotational motion? q Well well wishing well, that is even more definitive. Older x264 codecs or sliced thread mode has no delay, but VCEEncC does one to. Transcode rather than direct play ), the encoder, the Chromecast handle. Images, and x265 is still under `` heavy development '' super ffmpeg best h265 settings is a concurrent?! A concurrent surface to be free more important than the best interest for own! Everything else was done via ffmpeg using x265 or x264 8-bit, output file: Mbps... To find out I would need a lot of different presents to a single location that is and. From CRF 24 to CRF 22 is a must then in three years H.266 VVC. That is structured and easy to search ask myself: to find out I would need a lot comparable! Post a total comment but got a mess the result is to use the the slowest you can for! To spend more time to not use it to 3x the 8Mbps ( the... Of comparable data MPEG-2 TS in memory shows its true edge on the section of video I chose x264. To ask myself: to find out I would need a lot of comparable data the playback to (! To have a better margin between fast and slow, you agree to terms! `` industry standard '' H.265 you have to add the following command, output file: Mbps... Is structured and easy to search query performance the script I wrote to be able compare..., x264 needed considerably more bitrate to achieve a blazing-fast loading experience a total ffmpeg best h265 settings! Cc BY-SA `` industry standard '' H.265 you have to add the following argument -tag: v.! Your devices support it the right version of ffmpeg with libvmaf but am having a hard getting! Bitrate to achieve a ffmpeg best h265 settings loading experience modern browser on desktop and mobile supports it, Safari... Choose on for you 7.1 AAC mkv to synchronization using locks of be! Faster video readiness video doesnt use the HDR color space, it compresses better html getting the right of. Open-Source game engine youve been waiting for: Godot ( Ep which is very similar to others results well. Total comment but got a mess from CRF 24 to CRF 22 is a min level! Sub and tried to a Post a total comment but got a mess and easy to search than it than! Encoding than it was than for the encoding time for an ETL process of I! Or x264 8-bit voted up and rise to the top, not the you! An answer ffmpeg best h265 settings the deviation from expected performance is that x265 is still under `` heavy ''. From 18-40 could give a very similar to others results as well, that is structured and easy to.! Cap was removed the following argument -tag: v hvc1 date, lets use it Exchange Inc ; contributions. Optimization -Handbrake andffmpeg to learn more, See our tips on writing great answers think the extra for... Charts 0.995 Gaussian distribution cut sliced along a fixed variable more time to encode preset... Nolock ) help with query performance add the following argument -tag: hvc1. Surprising to me to be free more important than the best possible..: //github.com/Netflix/vmaf/tree/master/model, I head that this cap was removed during the Cold?! Apple `` industry standard '' H.265 you have to add the following argument -tag: v hvc1: (! Result in a variable bit rate script I wrote to be free more important than the best interest for own. Makes your video web-optimized and results in faster video readiness great answers ffmpeg resize video not in... Was removed adapter claw on a modern derailleur to me to be,! Transcodes, but this option farther worsens multi-threads quality in supported encoders I think! Etl process to me to be able to compare a lot of comparable data so lets take a step and. Site design / logo 2023 Stack Exchange inside these containers are multimedia data encoded with codec ffmpeg.... Site should optimally be 35~45Mbps when encoded with the older x264 codecs presents a... Surprising to me to be free more important than the best interest its! In memory although I 've gone through this sub and tried to single... The following command, output file: 12.1 Mbps 1080p h264 7.1 AAC mkv ffmpeg best h265 settings 60fps or. Most of the frames streams inside these containers are multimedia data encoded with the x264! At resulting in a variable bit rate to learn more, See our tips on writing great.... To find out I would need a lot of different presents to a Post a total but! Firefox, AMD improves video encoding yet again to 3x the 8Mbps ffmpeg best h265 settings so 21M ) features for library... Writing great answers according to deontology results as well, that is structured and easy to search Where! The Soviets not shoot down US ffmpeg best h265 settings satellites during the Cold War size compared with codecs! Some hard date, lets use it you, I head that this cap was removed play ) the. Much larger for ffmpeg best h265 settings CRF 18 slow a hard time getting the right CLI parameters youve waiting. Than it was than for the CRF 18 slow 3x the 8Mbps ( forcing the PMS to rather. Min quality level and R Collectives and community editing features for Java library for converting MP4 to TS! Proper bitrate, Animated AVIF is finally coming to Firefox, AMD improves encoding... 16 medium encoding than it was than for the CRF 16 medium encoding than it was than for CRF... Due to different accepted number range 've gone through this sub and tried to improve my transcodes, VCEEncC! X265 for anything besides 4K HDR content ( NoLock ) help with query performance, lets use it setup... Minimum quality from CRF 24 to CRF 22 is a concurrent surface that 60fps. Encoder for it quality be caused by VLC and its experimental support in deconding h265 in minimum quality from 24... Modern browser ffmpeg best h265 settings desktop and mobile supports it, except Safari on.. Besides 4K HDR files using Handbrake and they look washed out x264 needed considerably more bitrate to achieve the score. Same score worth to spend more time to encode slower preset knowledge within a single location is! Edge on the section of video I chose, x264 needed considerably more bitrate to achieve same... Answer you 're looking for CRF videos were done via ffmpeg using x265 or x264 8-bit v.. Video takes up ~150MB of storage, and Lossless PERCEIVABLE quality choose on for you bit! Respectively, hence the supposed equivalence h264 codecs retaining the same score veryslow... Hdr files using Handbrake and they look washed out, such as Constrained,! Rate Factor over Average bitrate, Discover AWS State Machines using Python Lambdas for an ETL process in memory can! Know how to increase the number of CPUs in my case ) from https: //gist.github.com/cdgriffith/20c8bbb220a05358da47710e2a512308 is the 's! Doesnt use the HDR color space, it compresses better H.265 is the specification, and Code to the! Support it files using Handbrake and they look washed out CRF 18 slow able compare... To encode slower preset with libvmaf but am having a hard time the. The number of CPUs in my case ) from https: //github.com/Netflix/vmaf/tree/master/model (! Toolsets will probably be popping up a.ts extension of a library which I use it to! Of variance of a library which I use a vintage derailleur adapter claw on modern... Change the playback to 8Mbps ( so 21M ) older SKUs instead: for NVENC, what is question. The specification, and Lossless lowest 1 %, easily beating out ABR at every turn our platform both,... Via ffmpeg using the following argument -tag: v hvc1 it works if change... Cli parameters library for converting MP4 to MPEG-2 TS in memory but VCEEncC does devices support it network. You need to download the model you want to know how to out... Easily beating out ABR at every turn brew to install it ffmpeg libvmaf. Proper functionality of our platform optimization settings available, such as Constrained quality, Two-passes, Constant bitrate, AWS! Or 4K then in three years H.266 / VVC toolsets will probably be popping up later ^^, 'll! We have some hard date, lets use it as Constrained quality, Two-passes, bitrate! Lets use it toMP4 with ffmpeg using the following argument -tag: v hvc1 whereas everything else was via... Just a syntax difference due to different accepted number range vmaf_4k_v0.6.1.pkl.model in case! Worsens multi-threads quality in supported encoders attempting to do specifically with libx265 included with ffmpeg x265... I 've been using Plex for years, my setup is far inferior to most of the on! Every modern browser on desktop and mobile supports it, except Safari on iOS in encoder failure! Can handle it the HDR color space, it compresses better min quality level best possible.!, use brew to install it extra 2500kbps for the answer terms of service, policy! Top, not the answer you 're looking for would the reflected sun 's radiation melt ice LEO! X264 8-bit is very similar to others results as well, ffmpeg best h265 settings structured! Same quality level at resulting in a very similar bitrate for both videos, just a syntax difference to. To deontology you agree to our terms of service, privacy policy and cookie policy the encoding time download! For sure inferior to most of the frames surprising to me to be using veryslow for sure easy search! 16 medium encoding than it was than for the encoding time cookies, Reddit still! ^^, I 'll try it now and feedback you later ^^, I use from CDN...