[FFmpeg-user] I am unable to get ffmpeg to calculate PSNR for any video files.

[Korn Moffle]

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From: ffmpeg-user <ffmpeg-user-bounces at ffmpeg.org> on behalf of Reed Crowe <reedcrowe123 at gmail.com>
Sent: Tuesday, January 19, 2021 12:19 AM
To: ffmpeg-user at ffmpeg.org <ffmpeg-user at ffmpeg.org>
Subject: [FFmpeg-user] I am unable to get ffmpeg to calculate PSNR for any video files.

I have tried this test with three different versions of ffmpeg (4.3.1,
3.4.8 and N-100671-gc48110a4a4  on 2 different OSes (Ubuntu 18.04, Fedora
33).

Here is the command I am using:
ffmpeg -i 17647_20210118_195325.mp4 -i test.mp4 -filter_complex psnr -f
null -
These are the same file (one just renamed). But I have tried it with
different files as well with the same error. I'm not totally sure what the
error means.

Error: Application provided invalid, non monotonically increasing dts to
muxer in stream 0: 748 >= 748

Output with errors:

ffmpeg version 4.3.1 Copyright (c) 2000-2020 the FFmpeg developers
  built with gcc 10 (GCC)
  configuration: --prefix=/usr --bindir=/usr/bin
--datadir=/usr/share/ffmpeg --docdir=/usr/share/doc/ffmpeg
--incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man
--arch=x86_64 --optflags='-O2 -flto=auto -ffat-lto-objects -fexceptions -g
-grecord-gcc-switches -pipe -Wall -Werror=format-security
-Wp,-D_FORTIFY_SOURCE=2 -Wp,-D_GLIBCXX_ASSERTIONS
-specs=/usr/lib/rpm/redhat/redhat-hardened-cc1 -fstack-protector-strong
-specs=/usr/lib/rpm/redhat/redhat-annobin-cc1 -m64 -mtune=generic
-fasynchronous-unwind-tables -fstack-clash-protection -fcf-protection'
--extra-ldflags='-Wl,-z,relro -Wl,--as-needed -Wl,-z,now
-specs=/usr/lib/rpm/redhat/redhat-hardened-ld ' --extra-cflags='
-I/usr/include/rav1e' --enable-libopencore-amrnb --enable-libopencore-amrwb
--enable-libvo-amrwbenc --enable-version3 --enable-bzlib
--disable-crystalhd --enable-fontconfig --enable-frei0r --enable-gcrypt
--enable-gnutls --enable-ladspa --enable-libaom --enable-libdav1d
--enable-libass --enable-libbluray --enable-libcdio --enable-libdrm
--enable-libjack --enable-libfreetype --enable-libfribidi --enable-libgsm
--enable-liblensfun --enable-libmp3lame --enable-libmysofa --enable-nvenc
--enable-openal --enable-opencl --enable-opengl --enable-libopenjpeg
--enable-libopenmpt --enable-libopus --enable-libpulse --enable-librsvg
--enable-librav1e --enable-libsoxr --enable-libspeex --enable-libssh
--enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvidstab
--enable-libvmaf --enable-version3 --enable-vapoursynth --enable-libvpx
--enable-vulkan --enable-libglslang --enable-libx264 --enable-libx265
--enable-libxvid --enable-libxml2 --enable-libzimg --enable-libzvbi
--enable-lv2 --enable-avfilter --enable-avresample --enable-libmodplug
--enable-postproc --enable-pthreads --disable-static --enable-shared
--enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64
--enable-lto --enable-libmfx --enable-runtime-cpudetect
  libavutil      56. 51.100 / 56. 51.100
  libavcodec     58. 91.100 / 58. 91.100
  libavformat    58. 45.100 / 58. 45.100
  libavdevice    58. 10.100 / 58. 10.100
  libavfilter     7. 85.100 /  7. 85.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  7.100 /  5.  7.100
  libswresample   3.  7.100 /  3.  7.100
  libpostproc    55.  7.100 / 55.  7.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '17647_20210118_195325.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : 'LVT17647'
    encoder         : Lavf58.20.100
  Duration: 00:00:59.87, start: 0.000000, bitrate: 67 kb/s
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc,
bt470bg/bt470bg/bt709), 704x480, 66 kb/s, 15.03 fps, 15 tbr, 90k tbn, 180k
tbc (default)
    Metadata:
      handler_name    : VideoHandler
Input #1, mov,mp4,m4a,3gp,3g2,mj2, from 'test.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : 'LVT17647'
    encoder         : Lavf58.20.100
  Duration: 00:00:59.87, start: 0.000000, bitrate: 67 kb/s
    Stream #1:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuvj420p(pc,
bt470bg/bt470bg/bt709), 704x480, 66 kb/s, 15.03 fps, 15 tbr, 90k tbn, 180k
tbc (default)
    Metadata:
      handler_name    : VideoHandler
Stream mapping:
  Stream #0:0 (h264) -> settb
  Stream #1:0 (h264) -> settb
  psnr -> Stream #0:0 (wrapped_avframe)
Press [q] to stop, [?] for help
Output #0, null, to 'pipe:':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    title           : 'LVT17647'
    encoder         : Lavf58.45.100
    Stream #0:0: Video: wrapped_avframe, yuvj420p, 704x480, q=2-31, 200
kb/s, 15 fps, 15 tbn, 15 tbc (default)
    Metadata:
      encoder         : Lavc58.91.100 wrapped_avframe
*[null @ 0x55e31e9a0240] Application provided invalid, non monotonically
increasing dts to muxer in stream 0: 748 >= 748*
frame=  899 fps=0.0 q=-0.0 Lsize=N/A time=00:00:59.86 bitrate=N/A speed=
150x
video:471kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB
muxing overhead: unknown
[Parsed_psnr_4 @ 0x55e31edfa580] PSNR y:inf u:inf v:inf average:inf min:inf
max:inf
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