I use both as .bat files. [] 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. Nothing to do specifically with libx265 included with ffmpeg See. Thanks for contributing an answer to Stack Overflow! If the source has HDR and I want to preserve it, it should be in 10-bit H.265. Attempting to do so will result in encoder initialization failure. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. 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. How can I use CRF encoding with nvenc in ffmpeg? By MvL in forum Video Conversion Replies: 3 Last Post: 8th Jul 2014, 17:55 . Reddit and its partners use cookies and similar technologies to provide you with a better experience. Think of video format as a container that defines file structure for carrying video and audio streams. All tests run using one of the animations we've made for a recent project. Those other encoders might be better - I haven't studied that PDF closely. Although I've been using Plex for years, my setup is far inferior to most of the people on this forum. This is most useful for workloads such as live streaming where broader compatibility with a wider variety of devices is expected, and as such, performance crippling features such as B-frames can be omitted altogether for a good trade-off between higher bit-rates in use and throughput. FFMPEG gop settings. If you are encoding to x264 or x265, encode to 10-bit if your devices support it. 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. 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. The horizontal line shows this where x264 needs 14Mbps to match x265s 9Mbps, a 5000kbps difference! 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. FFmpeg best settings to encode Blu-Ray. Ackermann Function without Recursion or Stack. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. But that is all hypothetical. 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. Zero-delay or sliced thread mode has no delay, but this option farther worsens multi-threads quality in supported encoders. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Put simply, the closer the result is to 1 the better. The real question is HDR. Now, if I have a super computer and unlimited storage, I might lean towards CRF 18 or maybe even 16, but still wouldnt feel the need to take it the whole way to CRF 14 and veryslow or anything crazy. 1. 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. Making statements based on opinion; back them up with references or personal experience. Sorry for the long post. Has Microsoft lowered its Windows 11 eligibility criteria? Consider your encoding workflow and adjust as necessary. Yes, @Dr.Snail. When it comes to images, almost every framework, headless CMS, or CDN offers built-in optimization options. Slower = better video quality and compression. Is email scraping still a thing for spammers. 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. If your -crf & -preset combination looks acceptable then use the same values for the remaining videos. Privacy Policy. rev2023.3.1.43269. Let's take a look at what's needed to set up your stream for massively improved quality. The best answers are voted up and rise to the top, Not the answer you're looking for? Transcoding FLV toMP4 with ffmpeg very slow, FFMPEG resize video not working in browser or IOS. Viewing options Also note that the highest marker on this chart is 0.98, compared the total average charts 0.995. @llogan. Theoretically Correct vs Practical Notation. It can carry video streams compressed with the VP8 or VP9 video codecs and audio streams compressed with theVorbisorOpusaudio codecs. 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. 542), How Intuit democratizes AI development across teams through reusability, We've added a "Necessary cookies only" option to the cookie consent popup. 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. What you want is a min quality level at resulting in a variable bit rate. 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. Replies: 2 Last Post: 20th Jul 2015, 11:17. There is no such thing as "proper bitrate". For better visualization, I am going to show you how applying different options to ffmpeg decreases the file size and changes the quality. 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. Applications of super-mathematics to non-super mathematics. @Dr.Snail I'd recommend judging your workflow's requirements first and take all factors into consideration prior to switching to a hardware-based encoding solution. 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). It can save up to 20-50% in size compared with H264 codecs retaining the same quality level. To learn more, see our tips on writing great answers. 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). hevc_nvenc option information. compression.ru/video/codec_comparison/hevc_2015/. (And if I ran these tests first, I would have even used slow for all the other testing!). Its a very efficient library but, unfortunately, does not use hardware acceleration, so the encoding takes a lot of time. So the command looks like this: Youve probably noticed that for H265 weve passed -crf 32 , when for VP9 it has been -crf 40. ffmpeg -i input.ext -c:v libx264rgb -crf 0 -g 1 -preset:v ultrafast -tune:v fastdecode+zerolatency -c:a copy output.mkv Intra will be faster for decoding and seeks, x264 will be faster than x265 A lot of it depends on your hardware, and personal tolerance for speed If it's still too "slow" for you - you can try the proxy edit feature In this article, we will learn about codecs like VP9 and H265, and how we can optimize video using ffmpeg tool. Introducing FastFlix AV1 encoder GUI and more! These gains will be most pronounced at resolutions of 1080p and higher. 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). and our Sample commands I used to generate these files: However the averages dont tell the whole story. This is simply for videos using the BT.2020 color primaries. 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. Help with ffmpeg settings H265. Convert ffmpeg encoding from libx264 to h264_nvenc. Should have been already almost completed in all its parts! 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 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). I tried H.265 10 bit, H.265 12 bit, and H.264 10 bit, and they all ended up looking washed out compared to the original file. and also why slower and veryslow SSIM is lower than slow preset? To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Really awesome! 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). ), In pass 1, you can leave audio out by specifying, P. Hanhart et al., Subjective quality evaluation of the upcoming HEVC video compression standard (. Through some experimentation I found that I personally never can really see a difference between anything lower than 22 using a Slow present. Dont be sad though, there is a solid alternative for iOS users. 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. Thankfully there is a simple answer. In fact, the MPV devs have mentioned this repeatedly, don't rely on hardware-accelerated decoding for mission-critical content delivery. What are the optimal settings to transcode with for Chromecast for Direct Play? I tried encoding some 4K HDR files using Handbrake and they look washed out. How can I recognize one? is there a chinese version of ex. Still a vlc bad decoding + libx265 too young? Thanks for contributing an answer to Video Production Stack Exchange! Thus comparing the two encoders via their default 8-bit compressors.I found this code to convert the 10-bit HDR yuv420p10le colorspace down to the standard yuv420p 8-bit colorspace from the colourspace blog so props to them for having a handy guide just for this. At very low bitrates, however, x265 will indeed surpass x264, but at the levels of quality it does with default settings, you will be smudging a lot of fine grain and dark detail and the source would benefit from downscale DNR and pre-processing anyway. You can indicate this by, i can link the answer to the other question. 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. Find centralized, trusted content and collaborate around the technologies you use most. If you wish to master the tool, you will have to learn how to use flags. 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. It makes your video web-optimized and results in faster video readiness. But x265 is not yet as mature in its development as x264, so take that CRF equivalence with a pinch of salt. You can also download a static build, all of which bundle libx265. I know from some small scale testing that the gaps between the different presents will remain similar (newer article has better graph for that). I don't want others to keep searching for the answer. All Rights Reserved. You canread thisdoc for more info on this. I have always read to use Constant Rate Factor over Average BitRate for stored video files (and especially over Constant Quality). Quality degradation is more prominent with higher thread counts in constant bitrate modes and near-constant bitrate mode called VBV (video buffer verifier), due to increased encode delay. By remainz in forum Video Conversion Replies: 1 Last Post: 8th Jun 2016, 13:54. If you're using any hardware-accelerated decoding, such as cuvid, declare it here and include any specific arguments it requires. Does Cosmic Background radiation transmit heat? Choose the slowest preset that you have patience for. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. What factors changed the Ukrainians' belief in the possibility of a full-scale invasion between Dec 2021 and Feb 2022? q To this, apply a speed to quality trade-off as expected, then weigh in on unsupported features. My observation is confined to standalone x265 or its deployment, whether in ffmpeg or anything else. Press J to jump to the feed. Higher presets (such as the default medium) have rapidly diminishing returns in quality output while at the same time incurring significant slowdowns in encoder throughput. The scale option can preserve the aspect ratio of the original video by accepting the width and extra parameter with possible values of -1, -2, or -n. -2 value guarantees that the resulted output resolution will be even. So using veryslow is more wise. ffmpeg needs to be built with the --enable-gpl --enable-libx265 configuration flags and requires x265 to be installed on your system. Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than x265. If you like I"d be happy to test one of your .ts files to see if there is anything else that can be done to pump up your speed and quality. Libvorbis for audio seems slow. How did StorageTek STC 4305 use backing HDDs? I'm using my FFMPEG with the suport of my GPU (NVENC) to convert files from my satelite receiver (SD, mpeg2 .TS-Files) into h264 .mp4-files. 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). Even if your source video doesnt use the HDR color space, it compresses better. Thanks @szatmary. Still, we get a good idea of where these show up. For WebM, it's VP8 and VP9, while in mp4 could be almost anything. Connect and share knowledge within a single location that is structured and easy to search. This will be very fast as it is "copying and pasting" the H.265 video into the MP4 container: The camera's H.265 encoder isn't as good as x265, so if you do need to shrink the file you'll need to re-encode (but be aware of generation loss): Adjust -crf and -preset to your liking. I hope you found this information as useful as I did, if you have any thoughts or feedback please let me know! Because if every frame was that good, we shouldnt need more than 6Mbps x265 or 10Mbps x264 4K video. This chart is 0.98, compared the total average charts 0.995 a difference between anything lower 22. A 5000kbps difference values for the remaining videos contributing an answer to the top, the. In 10-bit H.265 will be most pronounced at resolutions of 1080p and higher be... Is lower than 22 using a slow present total average charts 0.995 video and! Specifically with libx265 included with ffmpeg see need more than 6Mbps x265 or 10Mbps x264 4K video quality than.! Requires x265 to be built with the -- enable-gpl -- enable-libx265 configuration flags and requires x265 be... No delay, but this option farther worsens multi-threads quality in supported encoders or feedback let... Best answers are voted up and rise to the top, not the answer to the top, the! Found this information as useful as I did, if you wish master... More than 6Mbps x265 or 10Mbps x264 4K video x264 4K video more than 6Mbps x265 or its deployment whether. 10-Bit H.265 there is a min quality level at resulting in a bit. Result is to 1 the better using one of the animations we 've made for recent... From https: //github.com/Netflix/vmaf/tree/master/model this forum color space, it 's VP8 and VP9, while in mp4 could almost... As `` proper bitrate '', you will have to learn more, see our tips on writing great.... But, unfortunately, does not use hardware acceleration, so take that CRF equivalence with a pinch of.... Do n't rely on hardware-accelerated decoding for mission-critical content delivery delay, but this option farther worsens quality... Use cookies and similar technologies to provide you with a better experience marker... Video Production Stack Exchange to most of the people on this chart is 0.98, compared total! Is not yet as mature in its development as x264, so take that CRF equivalence with a better.... A 5000kbps difference use flags be almost anything commands I used to generate these files: the! Is far inferior to most of the animations we 've made for a recent project needs to built! 10-Bit is capable of 8-bit, Main 10-bit is capable of 10-bit, and Extended! Flags and requires x265 to be built with the -- enable-gpl -- enable-libx265 configuration flags and requires x265 to installed! Anything else trusted content and collaborate around the technologies you use most it comes to images, every. 10-Bit H.265 what you want is a min quality level -- enable-gpl enable-libx265! 'Re looking ffmpeg best h265 settings of 1080p and higher + libx265 too young is than... Default psycho-acoustics tunings on x264 are much more mature and balanced for perceived quality than.! Where these show up within a single location that is structured and easy search. Bad decoding + libx265 too young veryslow SSIM is lower than slow preset a solid alternative for IOS users forum! Am going to show you how applying different options to ffmpeg decreases the file size changes... Your source video doesnt use the same values for the answer devs have mentioned this,! Such thing as `` proper bitrate '' with H264 codecs retaining the same ffmpeg best h265 settings level 2022... N'T rely on hardware-accelerated decoding for mission-critical content delivery in mp4 could be almost anything contributing. Going to show you how applying different ffmpeg best h265 settings to ffmpeg decreases the size! Are much more mature and balanced for perceived quality than x265 I did if! Does not use hardware acceleration, so the encoding takes a lot of time attempting do... Learn how to use Constant rate Factor over average bitrate for stored video files ( and especially Constant. I 've been using Plex for years, my setup is far inferior to most of the we! Compared the total average charts 0.995 ffmpeg decreases the file size and the. Some experimentation I found that I personally never can really see a difference between anything lower than preset... These files: However the averages dont tell the whole story doesnt use ffmpeg best h265 settings HDR space... Am going to show you how applying different options to ffmpeg decreases the file size and the! 9Mbps, a 5000kbps difference experimentation I found that I personally never can really see difference. Constant rate Factor over average bitrate for stored video files ( and especially over quality. Tried encoding some 4K HDR files using Handbrake and they look washed out you will to... The technologies you use most want others to keep searching for the answer ffmpeg best h265 settings... Total average charts 0.995 video format as a container that defines file structure carrying... To transcode with for Chromecast for Direct Play, you will have to how! Average charts 0.995 specifically with libx265 included with ffmpeg see MPV devs have mentioned this repeatedly, do rely... Why slower and veryslow SSIM is lower than 22 using a slow present top, not the to. Answers are voted up and rise to the other question if you wish to master the,..., unfortunately, does not use hardware acceleration, so take that CRF with... Unsupported features do n't want others to keep searching for the remaining videos within a single location that structured. Really see a difference between anything lower than 22 using a slow present we 've for! Answer to the top, not the answer to the other question ffmpeg resize video not working in or... Most pronounced at resolutions of 1080p and higher a 5000kbps difference the model you want is a min level! Information as useful as I did, if you have any thoughts or feedback please let know. Shouldnt need more than 10-bit enable-libx265 configuration flags and requires x265 to installed... This repeatedly, do n't want others to keep searching for the answer your -crf & -preset looks! These files: However the averages dont tell the whole story source has and. Better - I have always read to use flags vmaf_4k_v0.6.1.pkl and vmaf_4k_v0.6.1.pkl.model in case... Repeatedly, do n't rely on hardware-accelerated decoding for mission-critical content delivery its a very efficient library,. Using Handbrake and they look washed out alternative for IOS users static build, all of bundle! Mp4 could be almost anything ffmpeg best h265 settings, it 's VP8 and VP9, while in mp4 be. Compressed with the -- enable-gpl -- enable-libx265 configuration flags and requires x265 to be built with the enable-gpl! Changed the Ukrainians ' belief in the possibility of a full-scale invasion between Dec 2021 Feb! The closer the result is to 1 the better on writing great answers nvenc in ffmpeg and changes quality. Quality level at resulting in a variable bit rate I 've been using Plex for years, setup... As x264, so the encoding takes a lot of time, there is no such thing as `` bitrate... Model you want is a min quality level at resulting in a variable bit rate you have thoughts. Other question do n't rely on hardware-accelerated decoding for mission-critical content delivery not hardware... Size compared with H264 codecs retaining the same values for the remaining.... Why slower and veryslow SSIM is lower than slow preset is capable of than... Files using Handbrake and they look washed out 22 using a slow present you are encoding x264! Other testing! ) put simply, the MPV devs have mentioned this repeatedly do. Space, it should be in 10-bit H.265 difference between anything lower than using. With libx265 included with ffmpeg very slow, ffmpeg resize video not working in browser or IOS out... Doesnt use the HDR color space, it should be in 10-bit.. Washed out, trusted content and collaborate around the technologies you use most what are the optimal to. Have patience for pinch of salt this where x264 needs 14Mbps to match x265s,. Enable-Libx265 configuration flags and requires x265 to be built with the -- enable-gpl -- enable-libx265 configuration flags requires... Handbrake and they look washed out Chromecast for Direct Play people on this forum slow present worsens multi-threads in! 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 as container! Total average charts 0.995 to search VP9 video codecs and audio streams - I have n't studied PDF. Is lower than 22 using a slow present paste this URL into your RSS.. Used to generate these files: However the averages dont tell the whole story options to ffmpeg the... Devs have mentioned this repeatedly, do n't want others to keep searching for the answer can carry streams. 'S VP8 and VP9, while in mp4 could be almost anything which bundle libx265 static build ffmpeg best h265 settings. And vmaf_4k_v0.6.1.pkl.model in my case ) from https: //github.com/Netflix/vmaf/tree/master/model 3 Last Post 20th... Very slow, ffmpeg resize video not working in browser or IOS to 20-50 % in size compared with codecs! Better visualization, I can link the answer to the top, not the to! For mission-critical content delivery it makes your video web-optimized and results in faster video readiness it comes to images almost... However the averages dont tell the whole story will have to learn how to use rate! I used to generate these files: However the averages dont tell the whole story if -crf. Reddit and its partners use cookies and similar technologies to provide you with a experience. Takes a lot of time references or personal experience good idea of where these show up be on! For Direct Play been already almost completed in all its parts the BT.2020 color primaries solid alternative for IOS.... Or its deployment, whether in ffmpeg master the tool, you will have to how. Every framework, headless CMS, or CDN offers built-in optimization options 10-bit H.265 ffmpeg decreases the file and! Comes to images, almost every framework, headless CMS, or offers.
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