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• FFMPEG. Video to image sequences, duration changed

  17 avril 2020, par Robert Johnson

  The duration of the video changes from 7 minutes and 59 seconds to 7 minutes and 55 seconds.
I'm not sure what the issue is. But it's def eating up frames but i'm not sure what the issue is.

  



  My command :

  



  "ffmpeg -loglevel verbose -i '/secrets/secret.mkv' -vf fps=23.976 -qscale:v 3 -vf scale=720:540 '/secrets/lol5/SecretJpgs%05d.png' "

  



  And well that's about it.
I would really appreciate it, if someone was willing to help me out with this.
Would mean a lot !!!
Edit : I Understand there are mistakes with my command, still doesn't explain why the duration is changed. Check the duration : and then check the time of the output, 7 mins and 55 secs. I clearly lost something somewhere. To make sure this wasn't an error i went back and converted the image sequence to video and it was 7 mins and 55 secs, unlike the source. The command was perfectly fine and i even set the fps twice using different commands , but it was something else. Please i would really appreciate it , if any one of you could help me out.

  



  ffmpeg version 3.4.6-0ubuntu0.18.04.1 Copyright (c) 2000-2019 the FFmpeg developers
  built with gcc 7 (Ubuntu 7.3.0-16ubuntu3)
  configuration: --prefix=/usr --extra-version=0ubuntu0.18.04.1 --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
[h264 @ 0x56089f88a500] Reinit context to 1440x1088, pix_fmt: yuv420p
Input #0, matroska,webm, from '/secret/secrets/My secrets/Secret.mkv':
  Metadata:
    ENCODER         : Lavf57.71.100
  Duration: 00:07:59.08, start: 3.401000, bitrate: 5257 kb/s
    Chapter #0:0: start 0.000000, end 113.594000
    Metadata:
      title           : 00:02:23.643
    Chapter #0:1: start 113.594000, end 479.000000
    Metadata:
      title           : 00:09:54.594
    Stream #0:0(eng): Video: h264 (High), 1 reference frame, yuv420p(progressive, left), 1440x1080 (1440x1088) [SAR 1:1 DAR 4:3], 23.98 fps, 23.98 tbr, 1k tbn, 47.95 tbc (default)
    Metadata:
      BPS             : 5789491
      BPS-eng         : 5789491
      DURATION-eng    : 00:23:37.375000000
      NUMBER_OF_FRAMES: 33983
      NUMBER_OF_FRAMES-eng: 33983
      NUMBER_OF_BYTES : 1025735076
      NUMBER_OF_BYTES-eng: 1025735076
      _STATISTICS_WRITING_APP: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2017-02-16 22:40:33
      _STATISTICS_WRITING_DATE_UTC-eng: 2017-02-16 22:40:33
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      DURATION        : 00:07:59.083000000
    Stream #0:1(eng): Subtitle: ass (default) (forced)
    Metadata:
      title           : English full
      BPS             : 35
      BPS-eng         : 35
      DURATION-eng    : 00:23:34.413000000
      NUMBER_OF_FRAMES: 248
      NUMBER_OF_FRAMES-eng: 248
      NUMBER_OF_BYTES : 6265
      NUMBER_OF_BYTES-eng: 6265
      _STATISTICS_WRITING_APP: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2017-02-16 22:40:33
      _STATISTICS_WRITING_DATE_UTC-eng: 2017-02-16 22:40:33
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      ENCODER         : Lavc57.89.100 ssa
      DURATION        : 00:07:42.860000000
Stream mapping:
  Stream #0:0 -> #0:0 (h264 (native) -> png (native))
Press [q] to stop, [?] for help
[h264 @ 0x56089f88cd00] Reinit context to 1440x1088, pix_fmt: yuv420p
[Parsed_scale_0 @ 0x56089f843ae0] w:720 h:540 flags:'bicubic' interl:0
[graph 0 input from stream 0:0 @ 0x56089f843b80] w:1440 h:1080 pixfmt:yuv420p tb:1/1000 fr:24000/1001 sar:1/1 sws_param:flags=2
[Parsed_scale_0 @ 0x56089f843ae0] w:1440 h:1080 fmt:yuv420p sar:1/1 -> w:720 h:540 fmt:rgb24 sar:1/1 flags:0x4
Output #0, image2, to '/secret/lol5/SecretJpgs%05d.png':
  Metadata:
    encoder         : Lavf57.83.100
    Chapter #0:0: start 0.000000, end 110.193000
    Metadata:
      title           : 00:02:23.643
    Chapter #0:1: start 110.193000, end 475.599000
    Metadata:
      title           : 00:09:54.594
    Stream #0:0(eng): Video: png, 1 reference frame, rgb24(left), 720x540 [SAR 1:1 DAR 4:3], q=2-31, 200 kb/s, 23.98 fps, 23.98 tbn, 23.98 tbc (default)
    Metadata:
      BPS             : 5789491
      BPS-eng         : 5789491
      DURATION-eng    : 00:23:37.375000000
      NUMBER_OF_FRAMES: 33983
      NUMBER_OF_FRAMES-eng: 33983
      NUMBER_OF_BYTES : 1025735076
      NUMBER_OF_BYTES-eng: 1025735076
      _STATISTICS_WRITING_APP: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_APP-eng: mkvmerge v8.3.0 ('Over the Horizon') 64bit
      _STATISTICS_WRITING_DATE_UTC: 2017-02-16 22:40:33
      _STATISTICS_WRITING_DATE_UTC-eng: 2017-02-16 22:40:33
      _STATISTICS_TAGS: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      _STATISTICS_TAGS-eng: BPS DURATION NUMBER_OF_FRAMES NUMBER_OF_BYTES
      DURATION        : 00:07:59.083000000
      encoder         : Lavc57.107.100 png
No more output streams to write to, finishing.
frame=11405 fps= 20 q=-0.0 Lsize=N/A time=00:07:55.68 bitrate=N/A speed=0.823x    
video:4711858kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
Input file #0 (/secret/secrets/My secrets/Secret.mkv):
  Input stream #0:0 (video): 11405 packets read (314757039 bytes); 11405 frames decoded; 
  Input stream #0:1 (subtitle): 0 packets read (0 bytes); 
  Total: 11405 packets (314757039 bytes) demuxed
Output file #0 (/secret/lol5/SecretJpgs%05d.png):
  Output stream #0:0 (video): 11405 frames encoded; 11405 packets muxed (4824942145 bytes); 
  Total: 11405 packets (4824942145 bytes) muxed


  


• Anomalie #4495 (Nouveau) : migration 3.2.7 vers 3.3.0

  24 mai 2020, par josiane aletto

  test 1-
  j’ai installée en local un site qui était en SPIP 3.2.7 [24473] pour le migrer en SPIP 3.3.0-dev [24578].
  fichier mesoptions.php avec
  

  <span class="CodeRay"><span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_IMG_MAX_HEIGHT</span><span class="delimiter">'</span></span>,<span class="integer">1200</span>); <span class="comment">// largeur en pixels</span>
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_IMG_MAX_WIDTH</span><span class="delimiter">'</span></span>, <span class="integer">1024</span>);  <span class="comment">// hauteur en pixels</span>
  <span class="predefined">define</span>(<span class="string"><span class="delimiter">'</span><span class="content">_IMG_MAX_SIZE</span><span class="delimiter">'</span></span>,  <span class="integer">650</span>);   <span class="comment">// taille en kilo-octets</span>
  </span>
  Télécharger

  
  Des logos de taille superieure a _IMG_MAX_SIZE’, 650 ne sont plus dans IMG Pas non plus dans logo_erreur non plus.
  par exemple rubon3 : 1630 × 648 pixels
  Plugins :
  Adaptive Images 1.9.2 -
  Agenda 3.26.0 -
  API de vérification 1.8.1 - stable
  Centre image 0.10.4 - dev
  Couleur de rubrique 2.3.8
  Facteur 3.6.2 - stable
  Formidable 3.34.3 - stable
  Insérer Modèles 1.3.3 - stable
  Massicot 0.8.1 -
  Mini Calendrier 2.4.1 - stable
  oEmbed 2.0.10 - stable
  Owl Carousel 1.0.18
  Carousel responsive avec support du multi-touch.
  Palette 4.0.7
  pdf.js 0.6.3
  Picto mod avec FontAwesome 2.1.0
  Saisies pour formulaires 3.11.1
  SPIP Bonux 3.4.6
  YAML 2.0.10
  test2
  Pour mieux voir J’ai recommencé installation /migration en désinstallant le plugin massicot et en le supprimant du repertoire plugin et en mettant dans mes_options.php
  define(’_IMG_MAX_HEIGHT’,800) ; // largeur en pixels
  define(’_IMG_MAX_WIDTH’, 500) ; // hauteur en pixels
  define(’_IMG_MAX_SIZE’, 400) ; // taille en kilo-octets

  je constate ; que les logos de taille >400Ko sont présent mais retaillé, rubon3 qui avait 1630 × 648 pixels a maintenant à 500 × 199 pixels 221 ko dans logo/IMG alors qu’il n’ y a pas massicot.
  si je supprime ce rubon3 par logo de la rubrique et télécharge l’image originale j’obtiens une image retaillé avec du noir en plus. mais si je clique dessus l’image est retaillée mais ok et elle est bien en 500*199 dans IMG sans le noir.

  • les images migrées ont bien gardées leurs dimensions*.

  test3
  je telecharge le logo rubon3 de 1630 × 648 pixels comme un document d’un article —> il est enregistré directement en 500 × 199 pixels 221 ko . Ce mécanisme a changé, en mieux, car dans la version 3.2 j’avais un message "Les images doivent obligatoirement faire moins de 650 ko (ce fichier fait 847.5 ko)".

• How to send RTP stream to Janus from NGINX RTMP module ? [closed]

  25 novembre 2024, par Matéo

  I'm trying to create a stream and display it in a browser. I have already configured NGINX with the rtmp module and my stream works very well with HLS (between 5 and 10 seconds of latency).

  


  Now I would like to set up a low-latency stream and that's why I have installed the janus-gateway webRTC server that allows to take in input an RTP stream and provide in output a webRTC stream.

  


  Here's the schema I'd like to follow :

  


  OBS -> RTMP -> Nginx-rtmp-module -> ffmpeg -> RTP -> Janus -> webRTC -> Browser

  


  But I have a problem with this part : "nginx-rtmp-module -> ffmpeg -> janus"

  


  In fact, my janus's server is running and demos streaming works very well in localhost, but when i try to provide an RTP stream, Janus don't detect the stream in the demos (it shows "No remote video available").

  


  Anyone can help me, please ?

  


  Ressources :

  


  

  • My janus.plugin.streaming.jcfg configuration :

  


  


  rtp-sample: {
        type = "rtp"
        id = 1
        description = "Opus/VP8 live stream coming from external source"
        metadata = "You can use this metadata section to put any info you want!"
        audio = true
        video = true
        audioport = 5002
        audiopt = 111
        audiortpmap = "opus/48000/2"
        videoport = 5004
        videopt = 100
        videortpmap = "VP8/90000"
        secret = "adminpwd"
}



  


  

  • My nginx.conf application :

  


  


  application test {

        deny play all;

        live on;
        on_publish http://localhost/test/backend/sec/live_auth.php;

        exec ffmpeg -i rtmp://localhost/test/$name -an -c:v copy -flags global_header -bsf dump_extra -f rtp rtp://localhost:5004;

}