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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

Sur d’autres sites (10099)

  • Nginx Rtmp Module - How to check resolution when pushing rtmp stream to server before redirecting stream to another application ?

    22 août 2022, par bui the vuong

    I have a problem when developing a livestream system with nginx-rtmp-module . I have consulted some systems, there is a function that when pushing the rtmp stream, the livestream systems can recognize the resolution of the stream -> from there it will encode to hls with the corresponding profiles. For example stream 720p produces hls file with 360p -> 720p , if stream 1080p will produce hls file with 360p -> 1080p . I have tried the ways but no success. So how can I check the resolution and redirect the rtmp stream to the appropriate application for encoding. Looking forward to everyone's advice.

    


  • How to make .webm videos that change resolution [closed]

    5 août 2022, par IronKerman

    I recently came across a video on discord, that can somehow change from a 9:16 aspect ratio into a 1:1 aspect ratio video and I'm wondering how this was done, and how I can replicate it.
    
Thanks in advance
    
Incase someone needs the video to understand what I'm talking about you can find it here

    


  • How to calculate vmaf score of multi-resolution webm using ffmpeg ?

    13 juillet 2022, par will

    I’m trying to calculate the vmaf of two videos, one is avi(rawvideo(I420), yuv420p), the other is webm(vp8, yuv420p). I uploaded test video and vmaf log here.

    


    But I found that if it’s a multi-resolution webm, the scores obtained with and without fps filter are quite different. Without fps filter the vmaf score is 34.670390, with fps filter the vmaf score is 56.339923.

    


    If it‘s a single resolution webm, there is no significant difference between the scores obtained with and without fps filter. Without fps filter the vmaf score is 65.527304, with fps filter the vmaf score is 65.480217.

    


    I use these commands.

    


    without fps filter

    


    ffmpeg \
    -r 15 -i reference.avi \
    -r 15 -i distorted.webm \
    -lavfi "[0:v]setpts=PTS-STARTPTS[reference]; \
            [1:v]scale=1920:1080:flags=bicubic,setpts=PTS-STARTPTS[distorted]; \
            [distorted][reference]libvmaf=log_fmt=json:log_path=vmaf_without_fps.log:model_path=vmaf_v0.6.1.json:n_threads=10:ssim=1:psnr=1" \
    -f null -


    


    ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4.1_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, avi, from 'reference.avi':
  Metadata:
    software        : Lavf58.76.100
  Duration: 00:00:26.13, start: 0.000000, bitrate: 373260 kb/s
  Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 374202 kb/s, 15 fps, 15 tbr, 15 tbn, 15 tbc
Input #1, matroska,webm, from 'distorted.webm':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
  Stream #1:1(eng): Video: vp8, yuv420p(progressive), 1920x1080, SAR 1:1 DAR 16:9, 1k tbr, 1k tbn, 1k tbc (default)
    Metadata:
      alpha_mode      : 1
Stream mapping:
  Stream #0:0 (rawvideo) -> setpts (graph 0)
  Stream #1:1 (vp8) -> scale (graph 0)
  libvmaf (graph 0) -> Stream #0:0 (wrapped_avframe)
  Stream #1:0 -> #0:1 (opus (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
libvmaf INFO `compute_vmaf()` is deprecated and will be removed in a future libvmaf version
Output #0, null, to 'pipe:':
  Metadata:
    software        : Lavf58.76.100
    encoder         : Lavf58.76.100
  Stream #0:0: Video: wrapped_avframe, yuv420p(tv, bt470bg/unknown/unknown, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 15 fps, 15 tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 wrapped_avframe
  Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      encoder         : Lavc58.134.100 pcm_s16le
[libvmaf @ 0x7feb8a606a80] VMAF score: 58.1203705.87 bitrate=N/A speed= 5.6x    
libvmaf INFO `compute_vmaf()` is deprecated and will be removed in a future libvmaf version
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 0
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 1
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 2
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 3
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 4
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 5
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 6
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 7
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 8
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 9
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 10
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 11
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 12
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 13
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 14
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 15
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 16
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 17
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 18
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 19
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 20
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 21
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 22
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 23
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 24
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 25
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 26
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 27
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 28
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 29
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 30
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 31
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 32
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 33
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 34
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 35
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 36
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 37
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 38
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 39
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 40
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 41
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 42
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 43
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 44
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 45
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 46
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 47
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 48
[null @ 0x7feb8b04da00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 49 >= 49
frame=  392 fps= 36 q=-0.0 Lsize=N/A time=00:00:28.73 bitrate=N/A speed= 2.6x    
video:205kB audio:5400kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libvmaf @ 0x7feb8c405bc0] VMAF score: 34.670390


    


    with fps filter

    


    ffmpeg \
    -r 15 -i reference.avi \
    -r 15 -i distorted.webm \
    -lavfi "[0:v]setpts=PTS-STARTPTS[reference]; \
            [1:v]fps=fps=15,scale=1920:1080:flags=bicubic,setpts=PTS-STARTPTS[distorted]; \
            [distorted][reference]libvmaf=log_fmt=json:log_path=vmaf_with_fps.log:model_path=vmaf_v0.6.1.json:n_threads=10:ssim=1:psnr=1" \
    -f null -


    


    ffmpeg version 4.4.1 Copyright (c) 2000-2021 the FFmpeg developers
  built with Apple clang version 12.0.0 (clang-1200.0.32.29)
  configuration: --prefix=/usr/local/Cellar/ffmpeg/4.4.1_3 --enable-shared --enable-pthreads --enable-version3 --cc=clang --host-cflags= --host-ldflags= --enable-ffplay --enable-gnutls --enable-gpl --enable-libaom --enable-libbluray --enable-libdav1d --enable-libmp3lame --enable-libopus --enable-librav1e --enable-librist --enable-librubberband --enable-libsnappy --enable-libsrt --enable-libtesseract --enable-libtheora --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libxvid --enable-lzma --enable-libfontconfig --enable-libfreetype --enable-frei0r --enable-libass --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libspeex --enable-libsoxr --enable-libzmq --enable-libzimg --disable-libjack --disable-indev=jack --enable-avresample --enable-videotoolbox
  libavutil      56. 70.100 / 56. 70.100
  libavcodec     58.134.100 / 58.134.100
  libavformat    58. 76.100 / 58. 76.100
  libavdevice    58. 13.100 / 58. 13.100
  libavfilter     7.110.100 /  7.110.100
  libavresample   4.  0.  0 /  4.  0.  0
  libswscale      5.  9.100 /  5.  9.100
  libswresample   3.  9.100 /  3.  9.100
  libpostproc    55.  9.100 / 55.  9.100
Input #0, avi, from 'reference.avi':
  Metadata:
    software        : Lavf58.76.100
  Duration: 00:00:26.13, start: 0.000000, bitrate: 373260 kb/s
  Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 1920x1080, 374202 kb/s, 15 fps, 15 tbr, 15 tbn, 15 tbc
Input #1, matroska,webm, from 'distorted.webm':
  Metadata:
    encoder         : Chrome
  Duration: N/A, start: 0.000000, bitrate: N/A
  Stream #1:0(eng): Audio: opus, 48000 Hz, stereo, fltp (default)
  Stream #1:1(eng): Video: vp8, yuv420p(progressive), 1920x1080, SAR 1:1 DAR 16:9, 1k tbr, 1k tbn, 1k tbc (default)
    Metadata:
      alpha_mode      : 1
Stream mapping:
  Stream #0:0 (rawvideo) -> setpts (graph 0)
  Stream #1:1 (vp8) -> fps (graph 0)
  libvmaf (graph 0) -> Stream #0:0 (wrapped_avframe)
  Stream #1:0 -> #0:1 (opus (native) -> pcm_s16le (native))
Press [q] to stop, [?] for help
libvmaf INFO `compute_vmaf()` is deprecated and will be removed in a future libvmaf version
Output #0, null, to 'pipe:':
  Metadata:
    software        : Lavf58.76.100
    encoder         : Lavf58.76.100
  Stream #0:0: Video: wrapped_avframe, yuv420p(tv, bt470bg/unknown/unknown, progressive), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 15 fps, 15 tbn (default)
    Metadata:
      encoder         : Lavc58.134.100 wrapped_avframe
  Stream #0:1(eng): Audio: pcm_s16le, 48000 Hz, stereo, s16, 1536 kb/s (default)
    Metadata:
      encoder         : Lavc58.134.100 pcm_s16le
[libvmaf @ 0x7fdeab00bac0] VMAF score: 58.3160815.27 bitrate=N/A speed=5.08x    
libvmaf INFO `compute_vmaf()` is deprecated and will be removed in a future libvmaf version
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 0
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 1
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 2
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 3
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 4
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 5
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 6
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 7
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 8
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 9
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 10
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 11
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 12
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 13
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 14
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 15
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 16
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 17
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 18
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 19
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 20
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 21
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 22
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 23
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 24
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 25
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 26
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 27
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 28
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 29
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 30
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 31
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 32
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 33
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 34
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 35
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 36
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 37
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 38
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 39
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 40
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 41
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 42
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 43
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 44
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 45
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 46
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 47
[null @ 0x7fdeab84ba00] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 48 >= 48
frame=  391 fps= 36 q=-0.0 Lsize=N/A time=00:00:28.73 bitrate=N/A speed=2.62x    
video:205kB audio:5400kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
[libvmaf @ 0x7fdea9f34a00] VMAF score: 56.339923


    


    I'm curious about what causes such a difference ? And how to calculate vmaf score of multi-resolution webm correctly ?