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  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

  • (Dés)Activation de fonctionnalités (plugins)

    18 février 2011, par

    Pour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
    SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
    Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
    MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...)

  • Activation de l’inscription des visiteurs

    12 avril 2011, par

    Il est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
    Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
    Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...)

Sur d’autres sites (7586)

  • FFMPEG, player plays jerky video after encoding

    9 septembre 2020, par AKL

    I've been using FFMPEG on Windows 10 for a while. To help me do my job, I have got several DOS batch files which take parameters and perform tasks like cut from beginning, blur area, mute audio etc.

    


    I usually take big videos, extract the parts that I like using Avidemux, cut / apply filter on some parts using FFMPEG, join them using FFMPEG and then encode again to get rid of any errors (or jerkiness, etc) on my target player, which is Kodi 18.xx running on an Android TV (TCL brand).

    


    I have done a similar process for a video that I have been doing for several years and this video seems to be out of my control. I have chopped up the video using Avidemux 2.7.2. The video has been cut at key frames. If I take a single un-encoded file, it runs perfectly on my Android TV. If I encode it using FFMPEG, it starts to jerk when played on my Android TV.

    


    The videos always plays fine on VLC player running on my PC.

    


    Some information that may be helpful. I can attach detailed frame information if desired.

    


    ffmpeg version 4.3 Copyright (c) 2000-2020 the FFmpeg developers
      built with gcc 9.3.1 (GCC) 20200621
      configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libsrt --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvmaf --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libgsm --disable-w32threads --enable-libmfx --enable-ffnvcodec --enable-cuda-llvm --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
      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
      libswscale      5.  7.100 /  5.  7.100
      libswresample   3.  7.100 /  3.  7.100
      libpostproc    55.  7.100 / 55.  7.100


    


    Showing info for the source file. Codec is hevc, I think FFMPEG does not have default support for ?

    


    ffmpeg -i _p007_cut_start.mp4 -hide_banner
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '_p007_cut_start.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2mp41
        encoder         : Lavf58.20.100
      Duration: 00:00:08.51, start: 0.006000, bitrate: 5501 kb/s
        Stream #0:0(und): Video: hevc (Main 10) (hev1 / 0x31766568), yuv420p10le(tv, bt709), 1920x816 [SAR 1:1 DAR 40:17], 5091 kb/s, 23.98 fps, 23.98 tbr, 24390 tbn, 23.98 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 401 kb/s (default)
        Metadata:
          handler_name    : SoundHandler


    


    Showing info for the file that was encoded :

    


    ffmpeg -i p007_done2.mp4 -hide_banner
    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'p007_done2.mp4':
      Metadata:
        major_brand     : isom
        minor_version   : 512
        compatible_brands: isomiso2avc1mp41
        encoder         : Lavf58.45.100
      Duration: 00:00:08.53, start: 0.000000, bitrate: 3092 kb/s
        Stream #0:0(und): Video: h264 (High 10) (avc1 / 0x31637661), yuv420p10le, 1920x816 [SAR 1:1 DAR 40:17], 2743 kb/s, 23.98 fps, 23.98 tbr, 24390 tbn, 47.95 tbc (default)
        Metadata:
          handler_name    : VideoHandler
        Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, 5.1, fltp, 345 kb/s (default)
        Metadata:
          handler_name    : SoundHandler


    


    I would appreciate if someone can point to me where I am going wrong.

    


    The command used to perform the encoding is as follows (only the library was swapped between libx264 and lib265) :

    


    ffmpeg -i in.mp4 -map 0:v -c:v libx264 -video_track_timescale 24390 -crf 23 -map 0:a -c:a aac -copyts -vsync 0 -async 0 -movflags +faststart out.mp4


    


    P.S. My knowledge is more based on trial-and-error and I don't understand video formats (and concepts) much except for what got me to this point.

    


    Regards,
AK

    


  • Flutter chewie video player shows incorrect duration for HLS stream

    29 mai 2022, par magackame

    Im using SRS and ffmpeg to create a HLS video stream
    
I run SRS using docker command

    


    docker run --rm -it -p 1935:1935 -p 1985:1985 -p 8080:8080 ossrs/srs:4 ./objs/srs -c conf/docker.conf


    


    And then post a stream using ffmpeg command

    


    ffmpeg -re -i video.mp4 -c copy -f flv rtmp://localhost/live/livestream


    


    To playback a video in flutter I use Chewie video player (chewie: ^1.3.2 in pubspec.yaml) and this widget code :

    


    import &#x27;package:video_player/video_player.dart&#x27;;&#xA;import &#x27;package:chewie/chewie.dart&#x27;;&#xA;import &#x27;package:flutter/material.dart&#x27;;&#xA;&#xA;class RoomView extends StatefulWidget {&#xA;  const RoomView({Key? key}) : super(key: key);&#xA;&#xA;  @override&#xA;  _RoomViewState createState() => _RoomViewState();&#xA;}&#xA;&#xA;class _RoomViewState extends State<roomview> {&#xA;  late VideoPlayerController _videoController;&#xA;  late ChewieController _controller;&#xA;&#xA;  @override&#xA;  void dispose() {&#xA;    _controller.dispose();&#xA;    _videoController.dispose();&#xA;&#xA;    super.dispose();&#xA;  }&#xA;&#xA;  @override&#xA;  void initState() {&#xA;    super.initState();&#xA;&#xA;    _videoController = VideoPlayerController.network(&#x27;http://localhost/live/livestream.m3u8&#x27;)&#xA;      ..initialize().then((_) {&#xA;        setState(() {});&#xA;      });&#xA;&#xA;    _controller = ChewieController(videoPlayerController: _videoController);&#xA;  }&#xA;&#xA;  @override&#xA;  Widget build(BuildContext context) {&#xA;    return AspectRatio(&#xA;        aspectRatio:&#xA;        _controller.aspectRatio == null ? 16 / 9 : _controller.aspectRatio!,&#xA;        child: Chewie(controller: _controller));&#xA;  }&#xA;}&#xA;</roomview>

    &#xA;

    The video plays fine and seeking using the playback bar also works, but the video duration is incorrect. I tried streaming videos with different duration(the two minute and twenty minute ones), tried using mp4 and mkv formats as source and/or streaming using mpegts as output container(instead of flv) but all of them had a duration of either one minute or sometimes 10 seconds and the playbar will overflow when reaching the limit(showing something like 2:11/1:05).
    &#xA;When playing some public HLS streams(https://multiplatform-f.akamaihd.net/i/multi/will/bunny/big_buck_bunny_,640x360_400,640x360_700,640x360_1000,950x540_1500,.f4v.csmil/master.m3u8) the video duration is shown correctly so I guess the problem is either the SRS or the ffmpeg.
    &#xA;The question is what am I doing wrong, what parameters should I use for ffmpeg or SRS, and what are other options that I can use to provide a working HLS stream for the player

    &#xA;

  • How to Create videos from txt with ffmpeg ?

    27 avril 2016, par thora.graham

    I want to create a list of videos from txt files.
    I find a code on stackoverflow

    ffmpeg -f lavfi -i color=c=blue:s=1024x768:d=150 -vf "drawtext=fontfile='C\:\\Windows\\Fonts\\arial.ttf':fontsize=45: fontcolor=white:x=(w-text_w)/2:y=(h-text_h)/2:textfile=1.txt" output.mp4

    But its only can create 1 video at a time with the same duration.

    Is it possible to create several videos at a time ?

    Anyone could help me to create bat file which could create videos from the txt file(1 txt to 1 video), and also each video have the different length(randomly from 180s to 240s)..

    I create a folder named txt, which have 1.txt 2.txt. 3.txt, the save the videos to a folder named video, and the videos name will be 1.mp4 2.mp4 3.mp4

    Thanks...

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