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Autres articles (38)

  • MediaSPIP : Modification des droits de création d’objets et de publication définitive

    11 novembre 2010, par

    Par défaut, MediaSPIP permet de créer 5 types d’objets.
    Toujours par défaut les droits de création et de publication définitive de ces objets sont réservés aux administrateurs, mais ils sont bien entendu configurables par les webmestres.
    Ces droits sont ainsi bloqués pour plusieurs raisons : parce que le fait d’autoriser à publier doit être la volonté du webmestre pas de l’ensemble de la plateforme et donc ne pas être un choix par défaut ; parce qu’avoir un compte peut servir à autre choses également, (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

Sur d’autres sites (7836)

  • How to add delay between input and outpout with ffmpeg

    12 février 2019, par ManYouTroll

    I would like to add the delay so that it leaves for example 1 minutes after having received with this command :

    ffmpeg -i rtmp://xx1.xx1.xx1.xx1/live -f flv rtmp://xx2.xx2.xx2.xx2/delay/pass

    So a shift of 1 minute between the 2 video streams.

    I hope you can help me, thank you in advance.

  • Access to macroblocks and motion values with libx264

    6 mars 2019, par Enock

    I have a question and I hope someone can help me.
    I want to extract all motion vectors in P_type mocroblock in a P_frame during encoding
    h264 video with libx264 (x264). libx264 uses X264Context in the function x264_frame to encode
    video. Then, I want to know how can I access to macroblocks in a picture and
    how to access to motion vectors table on this picture while using the X264Context struct.
    With MpegEncContext we can access them while using MpegEncContext struct’s mb_type, *mvs[2], mb_width, mb_height and mb_stride. But I don’t know how to have such informations (
    mb_type, *mvs[2], mb_width, mb_height and mb_stride) with X264Context struct.

    Please I need your help.

    Regards

  • nginx RTMP to HLS : FFMPG error when trying multiple bitrate output [on hold]

    28 mai 2014, par user3685074

    I’m currently trying to convert my RTMP Livestream into a HLS with 3 quality-settings.

    I followed this guide

    I’ve compiled my own FFMPEG and it’s working if I just convert 1 file.
    It seems libx264 isn’t able to do multiple encodings at the same time ?

    I’m using these command :

            exec /usr/local/bin/ffmpeg -i rtmp://localhost/src/$name 
    
        -c:a libfdk_aac -b:a 32k   -c:v libx264 -b:v 128K -f flv rtmp://localhost/hls/$name_low 
    
        -c:a libfdk_aac -b:a 64k   -c:v libx264 -b:v 256K -f flv rtmp://localhost/hls/$name_mid 
    
        -c:a libfdk_aac -b:a 128k  -c:v libx264 -b:v 512K -f flv rtmp://localhost/hls/$name_hi  2>>/tmp/ffmpeg.log;

    this is the output :

        ffmpeg version N-63519-g61917a1 Copyright (c) 2000-2014 the FFmpeg developers
    
      built on May 28 2014 18:06:42 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
    
      configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-x11grab --enable-libvpx --enable-libmp3lame --enable-librtmp --enable-libspeex --enable-libfdk_aac
    
      libavutil      52. 87.100 / 52. 87.100
    
      libavcodec     55. 65.100 / 55. 65.100
    
      libavformat    55. 41.100 / 55. 41.100
    
      libavdevice    55. 13.101 / 55. 13.101
    
      libavfilter     4.  5.100 /  4.  5.100
    
      libswscale      2.  6.100 /  2.  6.100
    
      libswresample   0. 19.100 /  0. 19.100
    
      libpostproc    52.  3.100 / 52.  3.100
    
    Metadata:
    
      Server                NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
      width                 1280.00
    
      height                720.00
    
      displayWidth          1280.00
    
      displayHeight         720.00
    
      duration              0.00
    
      framerate             25.00
    
      fps                   25.00
    
      videodatarate         390.00
    
      videocodecid          0.00
    
      audiodatarate         27.00
    
      audiocodecid          11.00
    
    Input #0, flv, from 'rtmp://localhost/src/test':
    
      Metadata:
    
        Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
        displayWidth    : 1280
    
        displayHeight   : 720
    
        fps             : 25
    
        profile         : 
    
        level           : 
    
      Duration: 00:00:00.00, start: 0.080000, bitrate: N/A
    
        Stream #0:0: Video: h264 (High), yuv420p, 1280x720, 399 kb/s, 25 fps, 25 tbr, 1k tbn, 50 tbc
    
        Stream #0:1: Audio: speex, 16000 Hz, mono, s16, 27 kb/s
    
    [libx264 @ 0x5260380] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
    [libx264 @ 0x5260380] profile High, level 3.1
    
    [libx264 @ 0x5260380] 264 - core 142 r2431 f23da7c - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=abr mbtree=1 bitrate=128 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
    [libx264 @ 0x525a920] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
    Output #0, flv, to 'rtmp://localhost/hls/test_low':
    
      Metadata:
    
        Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
        displayWidth    : 1280
    
        displayHeight   : 720
    
        fps             : 25
    
        profile         : 
    
        level           : 
    
        Stream #0:0: Video: h264 (libx264), yuv420p, 1280x720, q=-1--1, 128 kb/s, 25 fps, 90k tbn, 25 tbc
    
        Metadata:
    
          encoder         : Lavc55.65.100 libx264
    
        Stream #0:1: Audio: aac (libfdk_aac), 16000 Hz, mono, s16, 32 kb/s
    
        Metadata:
    
          encoder         : Lavc55.65.100 libfdk_aac
    
    Output #1, flv, to 'rtmp://localhost/hls/test_mid':
    
      Metadata:
    
        Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
        displayWidth    : 1280
    
        displayHeight   : 720
    
        fps             : 25
    
        profile         : 
    
        level           : 
    
        Stream #1:0: Video: h264, yuv420p, 1280x720, q=-1--1, 256 kb/s, 25 fps, 90k tbn, 25 tbc
    
        Metadata:
    
          encoder         : Lavc55.65.100 libx264
    
        Stream #1:1: Audio: aac, 16000 Hz, mono, s16
    
        Metadata:
    
          encoder         : Lavc55.65.100 libfdk_aac
    
    Output #2, flv, to 'rtmp://localhost/hls/test_hi':
    
      Metadata:
    
        Server          : NGINX RTMP (github.com/arut/nginx-rtmp-module)
    
        displayWidth    : 1280
    
        displayHeight   : 720
    
        fps             : 25
    
        profile         : 
    
        level           : 
    
        Stream #2:0: Video: h264, yuv420p, 1280x720, q=-1--1, 25 fps, 90k tbn, 25 tbc
    
        Metadata:
    
          encoder         : Lavc55.65.100 libx264
    
        Stream #2:1: Audio: aac, 16000 Hz, mono, s16
    
        Metadata:
    
          encoder         : Lavc55.65.100 libfdk_aac
    
    Stream mapping:
    
      Stream #0:0 -> #0:0 (h264 -> libx264)
    
      Stream #0:1 -> #0:1 (libspeex -> libfdk_aac)
    
      Stream #0:0 -> #1:0 (h264 -> libx264)
    
      Stream #0:1 -> #1:1 (libspeex -> libfdk_aac)
    
      Stream #0:0 -> #2:0 (h264 -> libx264)
    
      Stream #0:1 -> #2:1 (libspeex -> libfdk_aac)
    
    Error while opening encoder for output stream #1:0 - maybe incorrect parameters such as bit_rate, rate, width or height

    I hope you can help me and sorry for my bad english.

    Greetz
    Kevin

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