m4v -map_metadata 0 -metadata:s:v rotate="90" -codec copy output. NOTE: The number of mentions on this list indicates mentions on common posts plus user suggested alternatives. Download latest release from Github. A GUI built using C# to make Netflix's VMAF easier to use. Learn more. 1. Growth - month over month growth in stars. Recent commits have higher weight than older. 0 C# FFMpegCore VS NotEnoughAV1Encodes GUI for AV1 (aomenc, rav1e & svt-av1)Hello, Firstly, thank you for writing such a straight-forward GUI for VMAF. txt – path and name of the file to contain scores-report – saves the log file (not essential)-f null - – Tells FFmpeg to output a null file. This is much faster than trying to process an entire movie or tv show through VMAF/PSNR. Currently supports PSNR, SSIM, VMAF and VIF. pkl. When installing under Windows, select the option add Python to PATH in the installer. metrics for each plane (Y, U, V) or components/submetrics (in the case of VIF, VMAF) global statistics (min/max/average/standard deviation) Author: Werner Robitza werner. 6. In this paper we propose enhancements to VMAF through the integration of new video. Well, and build shiny graphs of course. All users should download the code from Github here as shown in Figure 1 and then extract the contents to a folder on your computer. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. YUV Viewer. NET Library for WinUI 3/ WPF/WinForms (based on FFmpeg/DirectX) NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1) FF-Video-Converter - Simple video converter with cutting and cropping functionality, powered by the ffmpeg. FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!. It's not an answer, I am just trying to help kesh improving the answer. The Max column identifies the highest score for each data rate. More than 100 million people use GitHub to discover, fork, and contribute to over 420 million projects. FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!. I build aomenc-git and ffmpeg-git binaries for linux nightly. 2. 5. 1. Automatically determine the best crf to deliver the min-vmaf and use it to encode a video or image. 2 36 10. I have written a GUI program, FastFlix, around FFmpeg and other tools to convert videos easily to HEVC, AV1 and other formats. If not, go to the VMAF models github page and download the model titled vmaf_v0. Using FFmpeg+libvmaf is very powerful, as you can create complex filters to calculate VMAF directly on videos of different encoding formats and resolutions. 0+ recommended) under the hood for the heavy lifting, and can work with a variety of encoders. --vmaf Calculate vmaf after encode is done and make a plot. VMAF applies an SVM model to this set of features, which depends on current settings. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. The program allow you to select analysed files without dealing with command line and calculate metrics in one go. vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use digital_video_introduction - A hands-on introduction to video technology: image, video, codec (av1, vp9, h265) and more (ffmpeg encoding). Examples Syncing: Reference Video delayed in regard with the first frame of Distorted one. This page attempts to maintain a (non-exhaustive) list of references on VMAF, including tech blogs, academic papers, presentations, etc. Growth - month over month growth in stars. exe . Code Issues Pull requestsvmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg. As there is no any renaming/remapping, they will be sent to libvmaf in original order: 0 then 1 (distorder then reference). mp4 file after . Use vmaf_model_load() when you would like to load one of the default built-in models. example: --vmaf_path "vmaf_v0. The program allows you to select files without dealing with command line, calculate & visualize PSNR, SSIM & VMAF quality metrics for all of them in one go. ffmpeg let's you calculate a vmaf score for any video you'd like, if you want a gui to do this a bit more comfortably, i have used nmkoder in the past. FFMetrics is a free and open-source tool that lets you compute and visualize PSNR, SSIM, and VMAF scores on up to 12 files simultaneously. Stars - the number of stars that a project has on GitHub. GitHub is where people build software. conf. The model file, for instance, is built-in to modern versions of libvmaf and is used by default, but since FFmpeg uses the old API you need to specify the model file path. Write better code with AI Code review. VMAF was released on Github in 2016 and has had considerable updates since that time. 69% of the encoding time of the Placebo preset. 1-full_build-ffmpeg-release-full. 0. Download VMAF Master from Github. Activity is a relative number indicating how actively a project is being developed. v1. Since libvmaf v2. 03% of the encoding time. Metric Calculation with FFmpeg. m4v. FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg. The VMAF models are actually trained by humans who rated the quality on a 1-5 point scale, watching the movie either on an 1080p screen from 3x screen height away, or on a 4k screen from 1. Collect and Analyze Billions of Data Points in Real Time. 6. NET FFMpeg/FFProbe wrapper for easily integrating media analysis. C#. ffmpeg -i main. 264 with mediocre quality at 1080p). When comparing vmaf-gui and video-quality-metrics you can also consider the following projects: FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg. It's not an answer, I am just trying to help kesh improving the answer. A GUI built using C# to make Netflix's VMAF easier to use. It supports commonly used quality metrics, such as PSNR, SSIM, VMAF, and modern standards (AVC/H. Growth - month over month growth in stars. FFMpegCore - A . Trial license is an edition for companies considering purchasing VQMT. Check out the FastFlix github wiki for help or more details, and please report bugs in the github issue tracker!The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. 0. exe . For ladders targeting free services, you have a floor of 55 and a ceiling of 95. VMAF is a machine learning based video quality assessment method, originally designed for streaming applications, which combines multiple quality metrics and video features through SVM regression. 0 forks Report repository Releases. ToolsThe number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. vmaf video-quality video-quality-assessment vmaf-gui ffmpeg-vmaf Updated Aug 8, 2023; pavancm / LIVE-HFR Star 3. LibHunt /DEVs Topics Popularity Index Search Login About. Testing a 1 minute clip I can't get a VMAF score of over about 74. 安装依赖库; pip install --user numpy scipy matplotlib pandas scikit-learn scikit-image h5py sureal libaom, the AOMedia codec in FFmpeg, v 2. Growth - month over month growth in stars. . Find the real video bitrate (size of the frames and not the size of the packets) Give a by seconds or by frames views. Sep 27, 2020. I've been experimenting with av1an and aomenc and want to share the results with you. Also includes PSNR, PSNR-HVS, PSNR-HVS-M, VIF, SSIM, MS-SSIM. Minor Improvements. 264. nmkoder - Media encoding, muxing, analysis toolkit for Windows . FFMpegCore - A . FFMpeg can be used for calculating different visual quality metrics (PSNR, SSIM, VMAF). 6. Select a reference video, a distorted video, and a VMAF model to get started. Updated on Aug 15, 2021. vmaf video-quality video-quality-assessment vmaf-gui ffmpeg-vmaf Resources. There is also the phone model that can be enabled by using the -pm argument. 6. Features: PSNR, SSIM, VMAF visual quality metrics. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. When "Threads per worked" = 1 and Av1an "Amount of Worker" > 2. Saved searches Use saved searches to filter your results more quicklyWe would like to show you a description here but the site won’t allow us. Below is a description of the currently available audio filters. For PSNR, the community consensus is that for 1080p encodes, a score of 45 or above is good. However, VMAF is only available through the commandline or as an extension to FFMPEG. With those two installed, you can build aom-av1-lavish with these steps ( reference ): cmake . Compares VMAF/SSIM/PSNR numerically & via graphs. 0 C# AV1/HEVC/VP9/H264 parallel encoder GUI for FFmpeg with preview/comparisonUse the --vmaf-model-path option to set the path to a different VMAF model file. Two model files are provided, vmaf_v0. 04. The tool takes a pair of input videos as well as a trained VMAF model and writes an output log containing per-frame and pooled VMAF scores. 0 C# FFMpegCore VS vmaf-gui A GUI built using C# to make Netflix's VMAF easier to use Flyleaf-548 0. If any videos are in the queue, qencoder will encode them. Stars. FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg. Topics: #GUI #Video #Ffmpeg #Vmaf #Psnr. pkl is 3840x2160 (don't forget about vmaf. nmkoder - Media encoding, muxing, analysis toolkit for Windows . Write better code with AI Code review. The original model released when we open-sourced VMAF was based on the assumption that the viewers sit in front of a 1080p display in a living room-like environment with the viewingA GUI built using C# to make Netflix's VMAF easier to use Project mention: What's a preferred constant quality for h265 1080p? | /r/handbrake | 2023-04-14. Features Input. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. It leans on Human Visual System. Add a description, image, and links to the vmaf-gui topic page so that developers can more easily learn about it. VMAF was designed for 1080p at an expected seating distance relative to display height of 3H. example) Change: -r added before -i to FFMpeg arguments while getting metrics (as per VMAF recommendation) Change: TBR is used instead of FPS if available. none. Growth - month over month growth in stars. It is assumed here that you have already downloaded and installed the EMSDK, installed and activated at least one toolchain, and setup your environment appropriately. vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use . Two phases: crf-search to determine the best --crf value. NET Library for WinUI 3/ WPF/WinForms (based on FFmpeg/DirectX) NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1) FF-Video-Converter - Simple video converter with cutting and cropping functionality, powered by the ffmpeg. Further,. NotEnoughAV1Encodes - GUI for AV1 (aomenc, rav1e & svt-av1) . mpg -lavfi libvmaf -f null -. These are linearly mapped to VMAF scores from 0-100, with 100 representing an “excellent” rating, and 20 corresponding to poor. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking. 2. But in general I find my test videos consistent enough that sampling with a just a few ends up fairly accurate. Code Calamity used VMAF to measure the image quality differentiation between AMF, NVENC and Intel QuickSync, with Big Buck Bunny as the reference video. A GUI built using C# to make Netflix's VMAF easier to use. In the build folder you’ll have to provide your own copy of ffmpeg, vmaf, and the model files for vmaf in a subfolder named model. nmkoder - Media encoding, muxing, analysis toolkit for Windows . However, just like with transcoding, this process takes a lot of time to run sequentially on your own machine. Compares VMAF/SSIM/PSNR numerically & via graphs. Therefore, for each 4 K segment we have the following data: its 38 features obtained from the 240p resolution, the VMAF, and the CRF that yields that VMAF (when encoding the video using VP9 at. 6. ), try "Full Reference Video Quality Monitor". Compares VMAF/SSIM/PSNR numerically & via graphs. The yellow line represents low-frame VMAF scores, or the lowest frame in the encoded file, a harbinger of transient quality issues. When I found myself wanting to encode in an older. Then encode that shorter clip through the settings you wanted to test. x supports JSON-based model files only. Stars - the number of stars that a project has on GitHub. If you have a CPU with some of the more recent instruction sets, like AVX-512, then you can get massive speed increases using Intel's SVT encoders. vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use . 2-pass rate control modes can distribute the bits more optimally within the frame and can reach closer to the target bitrate, especially for CBR encoding. video-quality-metrics - Test specified presets/CRF values for the x264 or x265 encoder. SVT-AV1 is an AV1 codec implementation created by Intel and Netflix and is available on GitHub. qencoder is the first gui av1 encoder to support proper video queueing. FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more! Sep 27, 2020. 1. pkl – path to VMAF model (this is the default model):log_path=VMAF. 3 or greater required, 5. 1. It then renders the chart to a buffer and saves the resulting image as 'vmaf-graph. ffmpeg -i main. mkvtools - bash tools for working with mkv files. as suggested in issue #6 Users should be able to select from the provided vmaf models. Currently the vmaf invocation will always use 4 threads. This program has built-in support for the following models: vmaf_v0. It's incredibly useful. VMAF软件时Netflix为了反应观众在欣赏视频流播服务时获得的画面质量而采用的方法,全名为Video Multimethod Assessment Fusion,为开源软件,git地址如下:. Hello, Straight to the point: Once the VMAF score has been presented and the log. In the second pass, NVENC encodes macroblocks in the frame using the distribution determined in the first pass. 4. AV1AN: Updated build and integrated the new chunk order option into GUI; AV1AN: If the output directory does not exist, Nmkoder will try to create it before starting av1an; Track. CRF is a technical target of quality, determined by the developers of a particular codec. VMAF Scoring seems inaccurate. Since these videos contain dominant temporal artifacts, lower VMAF performance indicates that the temporal component in VMAF is insufficient to capture frame rate. NET Library for WinUI 3/ WPF/WinForms (based on FFmpeg/DirectX) Audio Switcher - . mp4. exe FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more!SSIMPLUS SVS chose the 720p clip, AVQT the 540p output, while both showed significantly higher variability than VMAF, with the lowest quality SSIMPLUS SVS clip 45% of the highest, and 31% for AVQT. When comparing NotEnoughAV1Encodes and vmaf-gui you can also consider the following projects: Av1an - Cross-platform command-line AV1 / VP9 / HEVC / H264 encoding framework with per scene quality encoding. Compile FFmpeg for Ubuntu, Debian, or Mint. ts (blue arrow on the. FFmpeg官网提供编译好的Windows程序不包含VMAF的评价工具,想要使用libvmaf需要同时下载ffmpeg和libvmaf的源代码然后自行编译。命令行类似于前两个。 或许Windows端也可以使用Docker(?)不知道Docker可否解决编译的难题?不管了,我用不着,各位有缘人自己看着办吧=_= A GUI built using C# to make Netflix's VMAF easier to use Av1ador. Growth - month over month growth in stars. As there is no any renaming/remapping, they will be sent to libvmaf in original order: 0 then 1 (distorder then reference). Ideally, choose a portion of the video with more action and changing scenes. If you less than the recommended number of rungs, in either case, the quality loss. About. Two phases: crf-search to determine the best --crf value. Features: PSNR, SSIM, VMAF visual quality metrics VMAF is a tool developed by Netflix to grade the quality of a compressed video file in comparison to the Original. Readme Activity. Again, if you don’t get this file, and save it in the c:\ffmpeg\bin folder, the command strings shown below won’t work. Get Metrics: Calculate quality metrics like VMAF, SSIM, PSNR; Transfer Color Metadata: Copy. DEMO license is an edition for testing PRO/Premium features. mpg -lavfi libvmaf -f null -. exe . libvmaf version 2. Overall, FFMetrics is a very simple way to compute VMAF, PSNR, and SSIM, and graphically display the results of up to 12 files. So, the ideal ladder would include 21 rungs ( (95-55)/2)+1). - GitHub - Clybius/aom-av1-lavish: A fork of aom-av1-psy, which is a fork of aomenc. Stars - the number of stars that a project has on GitHub. Definitely the most precise tool to benchmark video encoders. For PSNR, the community consensus is that for 1080p encodes, a score of 45 or above is good. AV1AN: Target VMAF mode may not work with SVT-AV1; Per-track audio settings do not work correctly when muxing from multiple input files (still) Installation: Download; Unzip anywhere using 7zip (where you don't need administrator permissions - Don't use Program Files) Run Nmkoder. 1. The VMAF framework allows training of prediction models tailored to specic viewing conditions, no matter whether it is on a mobile phone or on a UHD TV. Write better code with AI Code review. 0 brought support for automatic key interval setting, arbitrary svt-av1 arguments, configurable vfilters & pixel format. Install vpx VP9, VP8 encoding. Tracking the progress of development of Vmaf-Gui 3. Nothing to showVQA model. 在包含有ffmpeg. model file for each model that you want to run. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. AV1/HEVC/VP9/H264 parallel encoder GUI for FFmpeg with preview/comparison. Well, and build shiny graphs of course. Sign up Product Actions. In terms of really exploring the differences between the files, VQMT has a much richer and more usable feature set, as you would expect from a 14th-generation tool. First check to see if the model files have already exist. json vmaf_4k_v0. Another Redditor on this sub created a GUI for VMAF a while back. nmkoder - Media encoding, muxing, analysis toolkit for Windows . 9168, VMAF=100. Browse to AOMedia Git index and login with your account (Gmail credentials, for example). I hope VMW8 will have AV1. Growth - month over month growth in stars. It's important not to forget this because these files are deleted after the log file is generated. This program has built-in support for the following models: vmaf_v0. exe Command: auto-encode. But VVC is still in development and has many features disabled, hard to say right now. Replace video size for -s and frame rate for -r. gui video ffmpeg ssim psnr vmaf vmaf-gui Updated Feb 16, 2023; C#; x-stars / ImageQuality Star 9. vmaf-gui has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. ffmpeg-quality-metrics. Clean code begins in your IDE with SonarLint. A GUI built using C# to make Netflix's VMAF easier to use. GitHub is where people build software. vmaf-gui has no bugs, it has no vulnerabilities,. vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use Flyleaf - Media Player . Links: FFmpeg: VMAF Master: has consistently shown to be closer to human visual perception than PSNR or any other objective metric. StaxRip is a powerful video/audio encoding GUI for Windows. , 2018) was computed for each encoded segment with the ffmpeg+libvmaf v2. exe -i " (sourceVid)" -vf "select=eq (n,487)" -vframes 1 source. Recent commits have higher weight than older. At the other end of the spectrum, preset 8 delivers 97. VMAF is a machine learning based video quality assessment method, originally designed for streaming applications, which combines multiple quality metrics and video features through SVM regression. pkl is 1920x1080 (by default), vmaf_4k_v0. 0 (now using rust+react)この辺のissueを読むと、-enc-mode と -cpu-used の値の変化による画質の変化は似たりよったりらしいです。 ってことでこの記事ではlibaomで利用している-cpu-usedの値に合わせることにしました。. StreamEye. 0 tool (command 2 in Table 4). ffmpeg to encode using the settings. jetson-ffmpeg - ffmpeg. vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use FastFlix - FastFlix is a free GUI for HEVC and AV1 encoding, GIF/WebP/AVIF creation, and more! nmkoder - Media encoding, muxing, analysis toolkit for Windows easyVmaf - Python script to easily compute VMAF using FFmpeg. These steps are in accordance with the corresponding github action for building on Windows and have been tested successfully using a Windows10 machine. easyVmaf - Python. Orange is VMAF score, left scale Results. NET Library for WinUI 3/ WPF/WinForms (based on FFmpeg/DirectX) NotEnoughAV1Encodes-478 0. In the most basic use case, the command to calculate VMAF is like this: ffmpeg -i distorted. GUI for AV1 (aomenc, rav1e & svt-av1). Is it just that these encoders can't compete with the. Build & Install FFmpeg with libvmaf on Ubuntu 20. Recent commits have higher weight than older. Activity is a relative number indicating how actively a project is being developed. If calculation still isn't fast enough, you can use n_subsample=X to speed it up. 'vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use . Translations: 🇺🇸 🇨🇳 🇯🇵 🇮🇹 🇰🇷 🇷🇺 🇧🇷 🇪🇸 ab-av1 - AV1 re-encoding using ffmpeg, svt-av1 & vmaf. Stars - the number of stars that a project has on GitHub. ts. VMAF is a perceptual video quality assessment algorithm developed by Netflix. Showing YUV. Translations: 🇺🇸 🇨🇳 🇯🇵 🇮🇹 🇰🇷 🇷🇺 🇧🇷 🇪🇸Vi Improved, a highly configurable, improved version of the vi text editor (with advanced features, such as a GUI) Upstream URL: License(s): custom:vim: Provides: vim=9. Could not load tags. Find the real video bitrate (size of the frames and not the size of the packets) Give a by seconds or by frames views. Hence, a higher number means a better vmaf-gui alternative or higher similarity. Code. VMAF has superior correlation with subjective judgments on existing FR-VQA databases. Recent commits have higher weight than older. VMAF uses several traditional metrics that measure perceived video quality in a data-driven manner to show practical and more accurate results. A GUI built using C# to make Netflix's VMAF easier to use. FFMetrics - Visualizes Video Quality Metrics (PSNR, SSIM & VMAF) calculated by ffmpeg. That’s what I’m looking for! Thanks! They're good for measuring objective quality, how similar the pixels are between videos. Build Using visual studio Just click the . Amazon has a new API called Rekognition which allows you to compare two images for facial similarity. NET Library which facilitates interacting with Audio Devices on Windows SeeShark - Simple C# camera library. Replace memory writes with mask in sse4. While state-of-the-art image restoration methods are based on convolutional neural networks, few attempts. VMAF follows a machine-learning based approach to first extract a number of quality. The model is trained using ratings from human viewers, who rank videos as “excellent”, “good”, “fair”, “poor”, or “bad”. NET Standard wrapper for FFmpeg. ffmpeg to encode using the settings. 266, AV1, AV2, AVS3, MJPEG). Recent commits have higher weight than older. When you are done, save the queue to a file for later, or run it now with the encode button. You’ll have to compile your. Manage code changesmeson setup libvmaf libvmaf/build --buildtype release --default-library static --prefix C:/vmaf-install. AV1/HEVC/VP9/H264 parallel encoder GUI for FFmpeg with preview/comparison. 5-beta. 1neg. Tech Blogs We would like to show you a description here but the site won’t allow us. where VMAF_score is the final score and the others are the scores for VMAF's elementary metrics: ; adm2, vif_scalex scores range from 0 (worst) to 1 (best) ; motion2 score typically ranges from 0 (static) to 20 (high-motion) Play with Models . vmaf-gui - A GUI built using C# to make Netflix's VMAF easier to use Flyleaf - Media Player . These instructions focus on using the inspector with AOMAnalyzer, but all tools can be. aomenc is AOMedia’s standalone encoding executable and is available here. GitHub is where people build software. exe . It offers higher correlation with subjective opinions compared to many conventional quality assessment methods. easyVmaf - Python. Stars - the number of stars that a project has on GitHub. And 1080p YT files against that 1080p DNxHR (downres'd from the 4k master) -6 Profit Blue bars are bitrates of files YT provided back, right scale. Av1ador. Table 1 shows the VMAF scores at each resolution and data rate. mp4. Netflix still uses a combination of VMAF and PSNR to evaluate encode settings. The default is vmaf_v0. Input videos can be either . There are two more models, one for mobile devices (trained on Samsung S5 with resolution 1920×1080), and one for 4k devices. So video streams order supplied to libvmaf is exactly the same as in Netflix. NET wrapper library for youtube-dl and yt-dlpTypically this is used to hook into the AOMAnalyzer GUI application. We investigate variants of the popular VMAF video quality assessment algorithm for the FR case, using both support vector regression and feedforward neural networks. 1. They're less good at subjective quality. C# Ssim. 0 I improved VMAF with automatic model selection & automatic upscaling to the selected model. When installing under Windows, select the option add Python to PATH in the installer. AV1AN: Target VMAF mode may not work with SVT-AV1; Per-track audio settings do not work correctly when muxing from multiple input files (still) Installation:. There's a huge difference in VMAF scores between those 2 settings. mpg -i ref. It allows to process media without know how FFmpeg works, and. Write better code with AI Code review. The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives. This can be mitigated by using more samples. I tried to make some VMAF testing with the VMAF GUI. 4 extracted from 7z FileSince posting about ab-av1 I’ve been improving the tool. 0 only in January. 0 C# NotEnoughAV1Encodes VS Av1ador AV1/HEVC/VP9/H264 parallel encoder GUI for FFmpeg with preview/comparison vmaf. all the videos encoded to 10000 kbps.