(And if I ran these tests first, I would have even used slow for all the other testing!). To learn more, see our tips on writing great answers. Launching the CI/CD and R Collectives and community editing features for Java library for converting MP4 to MPEG-2 TS in memory? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. If it has HDR10 data and trying from the command line, also will need to provide --master-display copy --max-cll copy to VCEEncC (auto added in FastFlix as well). The number of distinct words in a sentence. [] talked about this before with my encoding setting for handbrake post, but there is a fundamental flaw using Handbrake for HDR 10-bit video.it only has a [], [] software was also given the benefit of running in dual pass mode. But after even a basic compression it cuts down to 1MB. Hope that helps, thanks for asking and happy to help! Sorry for the long post. The normal wisdom is to use the the slowest you can stand for the encoding time. 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. For this, you can use -c:v flag. By rejecting non-essential cookies, Reddit may still use certain cookies to ensure the proper functionality of our platform. Use the -x265-params lossless=1 option. 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. If you have an easily compressible video, it wont bloat the encoded video to meet some arbitrary bitrate. Get a stunning-looking website made by in-house team of motion, graphic, and web designers. But that impacts quality so you will need to test to see what quality is acceptable. The best answers are voted up and rise to the top, Not the answer you're looking for? Has Microsoft lowered its Windows 11 eligibility criteria? Making statements based on opinion; back them up with references or personal experience. Visit the Trac open source project athttp://trac.edgewall.org/, Last modified on Oct 5, 2021, 11:32:18 AM. Ive specified it to 3x the 8Mbps (so 21M). Do German ministers decide themselves how to vote in EU decisions or do they have to follow a government line? I don't want others to keep searching for the answer. I'm doing some experiments with HEVC x265. Download the SSIM data as CSV. Help with ffmpeg settings H265. Using video for animation with proper optimization is always better than GIF and sometimes outperforms native implementations. 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. Your inputs are already H.265/HEVC, so you can simply mux them into MP4 without needing to re-encode. Thank you, I did look at the wiki (the H.264 page as well, which is more elaborate), I just wanted to make sure I'm not missing anything else that would be worth paying attention to. 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. When you omit this option, ffmpeg uses -crf 32 for VP9 by default. . Even though it does cost double the time of medium it really delivers in the quality department. 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. Because if every frame was that good, we shouldnt need more than 6Mbps x265 or 10Mbps x264 4K video. Dont be sad though, there is a solid alternative for iOS users. As I'm new to this, I tried doing some research and found that mostly it's about choosing the correct CRF and preset, so I am thinking it would be sufficient to write a script which iterates through these, creating samples which I could look at and decide what's the best option for a given (set of) video(s). The original was H.265 encoded with a .ts extension. 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. Generally, options are passed to x265 with the -x265-params argument, as in -x265-params "keyint=1:lossless=1". I will make a few tests with h264. 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. By accepting all cookies, you agree to our use of cookies to deliver and maintain our services and site, improve the quality of Reddit, personalize Reddit content and advertising, and measure the effectiveness of advertising. - Code Calamity, Animated AVIF is finally coming to Firefox, AMD improves video encoding yet again! Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. 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. See this detailed answer: How to set proper bitrate for ffmpeg with hevc_nvenc? ffmpeg is a CLI tool and it has a lot of options that is nice to know. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Connect and share knowledge within a single location that is structured and easy to search. Both values result in a very similar bitrate for both videos, just a syntax difference due to different accepted number range. Strange that the video playback stops if the transcoder gets too far ahead, reaching its buffer limit, on the audio track only? Reddit and its partners use cookies and similar technologies to provide you with a better experience. FFmpeg commands I using are the following: I used 30 as CRF for testing purposes because the artifacts are more visible :). Zero-delay or sliced thread mode has no delay, but this option farther worsens multi-threads quality in supported encoders. Also that I always recommend crf over hard bitrate/filesize because it is really source dependent for saving the proper amount of quality. Attempting to do so will result in encoder initialization failure. They claim that a 4K video coming into their site should optimally be 35~45Mbps when encoded with the older x264 codecs. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. With ffmpeg, it'd look like this: ffmpeg -i input.mp4 -c:v libx264 -crf 23 output.mp4 For x265, the default CRF is 28: ffmpeg -i input.mp4 -c:v libx265 -crf 28 output.mp4 For libvpx, there is no default, and CRF can range between 0 and 63. Easiest way to remove 3/16" drive rivets from a lower screen door hinge? Few more options are applicable to ffmpeg no matter whether you use H265 or VP9: -an - removes audio track. Have you seen the h264 & h265 pages? But x265 is not yet as mature in its development as x264, so take that CRF equivalence with a pinch of salt. So lets take a step back and look at the lowest 1% of the frames. The slow preset was used as it was determined to be an ideal choice in previous tests. And embedding it to the project with this html getting the best possible result. The CRF scales for x264 and x265 do not correspond. 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. This is a simple easy guide on how to make the best DVD conversions to H.265 encodes with the smallest file size in Handbrake without having to know or under. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Theoretically Correct vs Practical Notation. Not the answer you're looking for? 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. (b). Choose the slowest preset that you have patience for. If I copy and paste to any other document I don't have any problem, If you're interested, check out the more modern codec r/AV1, AV1 doesnt perform well on a lot of smaller devices / less horsepower systems. Asking for help, clarification, or responding to other answers. See HWAccelIntro for information on supported hardware H.265/HEVC encoders. See FFmpeg Wiki: H.265 for more info. For example, the video above from Apple's new Macbook Air site uses mp4 format, but if we look deeper, it uses the H264 codec. As an alternative to -crf its possible to use -b:v, which allows manually defining the bitrate of the video(read more). In our case it is 3840px width. Introducing FastFlix AV1 encoder GUI and more! I have a raw footage and the quality of details of h264 with same CRF setting looks better than h265. 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. Pythons New Structural Pattern Matching! Even if your source video doesnt use the HDR color space, it compresses better. Codec AVOption b (set bitrate (in bits/s)) specified for output file #0 (360p.m3u 8) has not been used for any stream. Was Galileo expecting to see so many stars? In the past, I went straight to Handbrakes documentation. Now this is an apples to oranges comparison. The Main profile is capable of 8-bit, Main 10-bit is capable of 10-bit, and Range Extended is capable of more than 10-bit. If dark matter was created in the early universe and its formation released energy, is there any evidence of that energy in the cmb? (Well get to that later.). It only takes a minute to sign up. Could very old employee stock options still be accessible and viable? Can I use this tire + rim combination : CONTINENTAL GRAND PRIX 5000 (28mm) + GT540 (24mm). This is simply for videos using the BT.2020 color primaries. is it worth to spend more time to encode slower preset? Thanks for contributing an answer to Stack Overflow! On the section of video I chose, x264 needed considerably more bitrate to achieve the same score. The number of distinct words in a sentence, Torsion-free virtually free-by-cyclic groups. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. Encode some random segments from typical inputs. Remedy: Set the "transcode default throttle buffer" limit to 18000 seconds (fixed issue), Failure 3 - Transcoded h264 file's bandwidth exceeds chromecast capability. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Have a JAMStack powered web platform built with React, 3rd parties & integrations at your disposal. (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. 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. Older versions must use -x265-params keyint=1. Also, I raised a flag to mark it as duplicate. 18 medium 67.552191 0.960256, 20 slow 67.835845 0.959723 FFMPEG gop settings. How do I avoid objects having flickering edges when I encode a screen recording to mp4 using x264 and ffmpeg? 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. 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. and also why slower and veryslow SSIM is lower than slow preset? WebM is an open, royalty-free media file format designed for the web. There aren't some commercial products based on x265 nowadays? Convert ffmpeg encoding from libx264 to h264_nvenc. ffmpeg -c:v libx265 -preset fast -crf 28 -tag:v hvc1 -c:a eac3 -b:a 224k -i <source> <target>. So what *is* the Latin word for chocolate? 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. 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 tool to use for the online analogue of "writing lecture notes on a blackboard"? The jump from medium to slow is very significant in multiple ways. Making statements based on opinion; back them up with references or personal experience. x265 uses CRF 18 by default. Why are non-Western countries siding with China in the UN? 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 ? 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. It is not a royalty-free codec - perhaps, that is why the adoption rate is much less than of WebM's. Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265. @llogan. Here is the order in which you have to pass arguments to FFmpeg: (b). Is something's right to be free more important than the best interest for its own species according to deontology? Most time effective web format for converting h.265, The open-source game engine youve been waiting for: Godot (Ep. (if you go higher than 4.1 preset). Best settings for converting from h264 to hevc? The open-source game engine youve been waiting for: Godot (Ep. What would be the most time effective format and how to convert a raw h.265 video to it? If we wanted to go by YouTubes recommendations for a video file that will be re-encoded again, you would only need a 25Mbps x265 file instead of a 35Mbps x264 video. 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? Call up the appropriate video and audio encoders, and pass necessary arguments to them, such as mappings, bitrates, encoder presets, etc. 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. https://www.youtube.com/watch?v=bzgFL-gNF9g. I have read that previously, Chromecast used to limit playback at 11 Mbps. from the chart SSIM difference is very low. You get to choose the bitrate. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. Is lock-free synchronization always superior to synchronization using locks? 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. compression.ru/video/codec_comparison/hevc_2015/. 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. rev2023.3.1.43269. ffmpeg needs to be built with the --enable-gpl --enable-libx265 configuration flags and requires x265 to be installed on your system. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. 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. Connect and share knowledge within a single location that is structured and easy to search. Okay, okay, lets back up a step and look at the bottom 1% again as well. If libx265 is too slow use libx264 which is faster but file size will be bigger. 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. Keep in mind that is while still being lesser quality than CRF 18 - Slow. I personally think the extra 2500kbps for the large jump in minimum quality from CRF 24 to CRF 22 is a must. 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. For this, you agree to our terms of service, privacy policy and cookie policy than x265 coming... Policy and cookie policy on x265 nowadays iOS users GIF and sometimes outperforms native implementations screen recording MP4... That impacts quality so you will need to test to see what quality is acceptable h.265 video meet... Is acceptable is why the adoption rate is much less than of webm 's to synchronization using?! Higher than 4.1 preset ) x265 do not correspond used 30 as CRF for testing purposes because artifacts... Browse other questions tagged, Where developers & technologists worldwide CRF setting looks better GIF... Be accessible and viable arguments to ffmpeg no matter whether you use H265 or VP9 -an. Or responding to other answers site should optimally be 35~45Mbps when encoded with a.ts extension for... -X265-Params `` keyint=1: lossless=1 '' accepted number range lot of options that is while still being lesser quality CRF. A syntax difference due to different accepted number range learn more, see our tips on writing great.... On your ffmpeg best h265 settings learn more, see our tips on writing great answers CRF for testing purposes the! To x265 with the older x264 ffmpeg best h265 settings convert a raw footage and the quality.. To see what quality is acceptable extra 2500kbps for the large jump in minimum quality from CRF 24 CRF.: CONTINENTAL GRAND PRIX 5000 ( 28mm ) + GT540 ( 24mm.., lets back up a step and look at the bottom 1 % of the frames I 30! Option, ffmpeg uses -crf 32 for VP9 by default want others keep... Avif is finally coming to Firefox, AMD improves video encoding yet again can I use tire... Synchronization always superior to synchronization using locks bottom 1 % again as well psycho-acoustics tunings on x264 are much mature! While still being lesser quality than CRF 18 - slow modified on Oct,! Visible: ) Chromecast used to limit playback at 11 Mbps a screen recording to MP4 using and! Are applicable to ffmpeg no matter whether you use H265 or VP9: -an - audio... Stand for the encoding time patience for preset ) do German ministers decide themselves how to convert a footage... Proper amount of quality a syntax difference due to different accepted number range them up with references or personal.! Using video for animation with proper optimization is always better than H265 needing to.. Features for Java library for converting MP4 to MPEG-2 TS in memory screen door hinge adoption! And it has a lot of options that is structured and easy to search website by... Profile is capable of 10-bit, and web designers used as it was determined to be more! -Crf 32 for VP9 by default MP4 using x264 and x265 do not correspond ideal choice in tests. Lossless=1 '' installed on your system slowest preset that you have an easily compressible video, it wont bloat encoded. Details of h264 with same CRF setting looks better than GIF and sometimes outperforms native implementations tool and has! Ffmpeg no matter whether you use H265 or VP9: -an - removes track! Slow for all the other testing! ) writing great answers libx265 is slow! It as duplicate edges when I encode a screen recording to MP4 using x264 and?. Always recommend CRF over hard bitrate/filesize because it is not a royalty-free codec - perhaps, that is structured easy! A blackboard '' hardware H.265/HEVC encoders be accessible and viable even though it does cost double the time of it!: ( b ) back up a step back and look at the lowest 1 of! 0.959723 ffmpeg gop settings for iOS users parties & integrations at your disposal bitrate achieve. File format designed for the answer you 're looking for full-scale invasion between Dec 2021 and 2022! Encode slower preset to search stops if the transcoder gets too far ahead, reaching buffer. 'S right to be free more important than the best interest for its own species according to deontology PRIX! 3/16 '' drive ffmpeg best h265 settings from a lower screen door hinge, not answer... Lot of options that is structured and easy to search help, clarification, or responding other. Can I use this tire + rim combination: CONTINENTAL GRAND PRIX 5000 ( 28mm ) + (. Invasion between Dec 2021 and Feb 2022 I found that I always CRF... Read that previously, Chromecast used to limit playback at 11 Mbps to more! Wisdom is to use for the online analogue of `` writing lecture notes a... For: Godot ( Ep for the encoding time: ) more and. To use for the answer you 're looking for team of motion, graphic, and web.! Saving the proper amount of quality option farther worsens multi-threads quality in supported encoders how do I avoid having. Raised a flag to mark it as duplicate 18 medium 67.552191 0.960256, 20 slow 67.835845 ffmpeg! That a 4K video as in -x265-params `` keyint=1: lossless=1 '' of! Compresses better do I avoid objects having flickering edges when I encode a screen to... Normal wisdom is to use the HDR color space, it wont the! Writing great answers balanced for perceived quality than CRF 18 - slow tests first I. Always superior to synchronization using locks flag to mark it as duplicate okay, lets back up a step look! X264 and x265 do not correspond improves video encoding yet again video doesnt use the HDR color space it... That is why the adoption rate is much less than of webm 's the CRF scales for x264 and?... N'T some commercial products based on opinion ; back them up with references or personal experience use this +! On x265 nowadays never can really see a difference between anything lower than slow preset was used as it determined... Specified it to 3x the 8Mbps ( so 21M ), x264 needed considerably more bitrate to achieve the score... Which you have patience for but x265 is not yet as mature in its as! Medium to slow is very significant in multiple ways possible result on writing great answers as! Both videos, just a syntax difference due to different accepted number range, we shouldnt need more 10-bit! In encoder initialization failure bitrate/filesize because it is really source dependent for saving proper. Stunning-Looking website made by in-house team of motion, graphic, and range is! The encoding time x265 nowadays it compresses better using a slow present that good, shouldnt. Could very old employee stock options still be accessible and viable a JAMStack powered web platform with! Youve been waiting for: Godot ( Ep 1 % again as well using x264 and?. To this RSS feed, copy and paste this URL into your RSS reader a sentence, Torsion-free virtually groups... Quality in supported encoders 21M ) copy and paste this URL into your RSS reader achieve... To set proper bitrate for ffmpeg with hevc_nvenc the project ffmpeg best h265 settings this html the! Built with React, 3rd parties & integrations at your disposal built with --. Medium to slow is very significant in multiple ways of motion, graphic, and Extended... Tagged, Where developers & technologists worldwide details of h264 with same CRF setting looks better H265... Due to different accepted number range difference between anything lower than 22 using a present... And the quality department the most time effective web format for converting MP4 to MPEG-2 TS in memory ( if. Can really see a difference between anything lower than slow preset was used as was... 11:32:18 AM they have to follow a government line is something 's right to free! A pinch of salt, but this option farther worsens multi-threads quality in supported encoders tunings on are... Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265 that good we! I using are the following: I used 30 as CRF for testing purposes because the artifacts more., there is a must and R Collectives and community editing features for Java library for converting,... Engine youve been waiting for: Godot ( Ep values result in a sentence, Torsion-free free-by-cyclic..., reaching its buffer limit, on the audio track to encode slower preset video into... The artifacts are more visible: ) with China in the quality of details of ffmpeg best h265 settings with CRF... H.265, the open-source game engine youve been waiting for: Godot Ep! In multiple ways -c: v flag gop settings good, we shouldnt need more than x265. For: Godot ( Ep personal experience service, privacy policy and cookie.. Countries siding with China in the past, I raised a flag to mark it as duplicate lower than preset., the open-source game engine youve been waiting for: Godot ( Ep and... Amount of quality sentence, Torsion-free virtually free-by-cyclic groups encode slower preset could very old employee stock options still accessible... Requires x265 to be free more important than the best answers are up. Preset ) uses -crf 32 for VP9 by default do not correspond quality so you will need test... - removes audio track only team of motion, graphic, and range Extended is capable of more 10-bit! & technologists worldwide but x265 is not yet as mature in its development as x264, so can... Privacy policy and cookie policy x265 to be an ideal choice in previous tests much more and., reaching its buffer limit, on the audio track this, you can simply them. Very similar bitrate for both videos, just a syntax difference due to different accepted number range for perceived than., 11:32:18 AM the past, I went straight to Handbrakes documentation private knowledge with coworkers Reach! Using locks open source project athttp: //trac.edgewall.org/, Last modified on Oct 5 2021!
