For anyone facing the same problem, this is how you use the psnr filter in ffmpeg to compare two separate videos: ffmpeg -i input_video.mp4 -i reference_video.mp4 -filter_complex "psnr" "output_video.mp4" Documentation says that input_video will be passed unchanged to output_video, and the psnr value will be shown on the command line. We tell FFmpeg to determine the PSNR score “psnr=1” as well and to use the phone model for VMAF calculation. If you want to use the standard model you can just omit the “phone_model=1” option. We specify a JSON output format and write the results to “out.json”. thank you for good app. can't get correct SSIM and PSNR under mkv lossless, mp4 one without audio, raw one which are made with ffmpeg. the results of mp4 are. That's the ffmpeg psnr filter modle's problem.Even we align the timestamp and framerate between ref and dis streams,we'll also get the different psnr&ssim values. The following are the test result in my side,one is come from libx264 log output,the other is calculated by ffmpeg psnr filter.

04/07/2018 · With saving the results in ssim.log and psnr.log files containing the results for every frame: ffmpeg -i distorted.mp4 -i reference.mp4 \ -lavfi "ssim=ssim.log;[0:v][1:v]psnr=psnr.log" -f null – VMAF is a perceptual video quality assessment algorithm developed by Netflix. VMAF Development Kit VDK. Summary of the bug: When I encode a YUV file with libx265 with the -psnr flag turned on, the given values are infinite/do not make sense. How to reproduce.

-me_method FFmpeg dia x264 / epzs FFmpeg is the simplest search, consisting of starting at the best predictor, checking the motion vectors at one pixel upwards, left, down, and to the right, picking the best, and repeating the process until it. 30/06/2011 · So I generated several compressed videos using ffmpeg from a series of images in png format with the option -psnr on to compute psnr for each compressed video. I then double check the output psnr by decode the video into frames in png format and compute psnr for. 19/07/2017 · 2. ffmpeg计算psnr存在的问题. psnr通过均方误差的对数值来表示图像的失真程度,是客观视频评价中常用的评估方法。 ffmpeg中提供了psnr的计算,除了在编码过程中实时计算psnr之外,也提供了比较转码前后两个视频的psnr的功能,本篇只描述计算两个离线文件psnr的. 1入力がオリジナルの動画で、2入力が PSNR を計算する動画。 ffmpeg -i input1 -i input2 -filter_complex psnr -an -f null - ログファイルを出力する。 ffmpeg -i input1 -i input2 -filter_complex psnr=stats.txt -an -f null - コンテナフォーマットが異なる、例えばMP4とMKVなどを比較する。. 10/10/2012 · x264在设置参数后,如果不进行psnr的设置,在编译的时候是不会打印出来信噪比的信息的,这里,只要在参数里面进行设置一下,如:--psnr,就可以打印出YUV的峰值信噪比的信息来,这里就把,在程序中的信噪比的计算和相关函数在这里列举出来:.

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