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    7 février 2011, par

    Pour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
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    Modification lors de l’ajout d’un média
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  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

Sur d’autres sites (9436)

  • ffmpeg "Option preset not found."

    2 février 2015, par PiTheNumber

    I am trying to convert a .mpg to .flv with ffmpeg. On other servers I got it working but here with the ffmpeg clone (avconv) it just does not do it.

    Originally I was working with libfaac and preset fastfirstpass but thats not available in this build so I switched to the experimental acc and preset libx264-fast_firstpass :

    $ /usr/bin/ffmpeg -i /data/upload/videos/original/150128_Test_731_9d5b83.mpg
    
  -strict experimental -acodec aac -ab 128k -ar 44100 -vcodec libx264 -pass 1 
    
  -pre libx264-fast_firstpass -b 512k -s 360x204 
    
  -f flv /data/upload/videos/encoded/150129_Test_731_54f06a.flv
    

    
avconv version 9.16-6:9.16-0ubuntu0.14.04.1, Copyright (c) 2000-2014 the Libav developers
    
  built on Aug 10 2014 18:16:02 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    
[mpeg @ 0xc87de0] max_analyze_duration reached
    
Guessed Channel Layout for  Input Stream #0.1 : stereo
    
Input #0, mpeg, from '/data/upload/videos/original/150128_Test_731_9d5b83.mpg':
    
  Duration: 00:01:00.12, start: 0.989978, bitrate: 4814 kb/s
    
    Stream #0.0[0x1e0]: Video: mpeg2video (Main), yuv420p, 720x406 [PAR 406:405 DAR 16:9], 104857 kb/s, 23.98 fps, 23.98 tbr, 90k tbn, 47.95 tbc
    
    Stream #0.1[0x1c0]: Audio: mp2, 48000 Hz, stereo, s16p, 224 kb/s
    
[libx264 @ 0xc8b4c0] using SAR=136/135
    
[libx264 @ 0xc8b4c0] MB rate (26910000) > level limit (2073600)
    
[libx264 @ 0xc8b4c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2
    
[libx264 @ 0xc8b4c0] profile Main, level 5.2
    
[libx264 @ 0xc8b4c0] 264 - core 142 r2389 956c8d8 - H.264/MPEG-4 AVC codec - Copyleft 2003-2014 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x1:0 me=dia subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=0 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 lookahead_threads=1 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=1 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=30 rc=abr mbtree=1 bitrate=512 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.25 aq=1:1.00
    
Option preset not found.

    What does the error in the last line mean ?

    I already made sure the preset libx264-fast_firstpass.avpreset exists in /usr/share/avconv/ and if I change it to invalid ffmpeg complains with Preset invalid specified for stream 0:0, but could not be opened., so the preset is correct.

    Google does provide two results for this error. This chatlog and it’s pastebin about live streaming with the solution to add -f flv and some russian page. Nothing helped.

    Any advice ?

  • How to deal with "Buffer queue overflow, dropping." (ffmpeg)

    1er mai 2015, par whitesiroi

    Sometimes it works great and sometimes I’m getting this message
    [Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.

    by running this command
    ffmpeg -i a1.mp4 -i watermark150x125.png -filter_complex 'overlay=10:10' output.mp4

    I tried different variation of "overlay" like overlay=W-w-5:H-h-5, overlay=10:main_h-overlay_h-10, overlay=main_w-overlay_w-10:main_h-overlay_h-10 - getting the same result.

    Here is the output of the ffmpeg command.

    ffmpeg version 2.6.2 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)
    
  configuration: --prefix=/usr/local/Cellar/ffmpeg/2.6.2 --enable-shared --enable-pthreads --enable-gpl --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-libx264 --enable-libmp3lame --enable-libvo-aacenc --enable-libxvid --enable-vda
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 26.100 / 56. 26.100
    
  libavformat    56. 25.101 / 56. 25.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 11.102 /  5. 11.102
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x7f952101d200] stream 0, timescale not set
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'a1.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    artist          : a1
    
    album           :
    
    comment         : 
    
    date            : 0
    
    genre           :
    
    title           : a1
    
    encoder         : Lavf56.4.101
    
  Duration: 00:01:41.51, start: 0.000000, bitrate: 227 kb/s
    
    Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p, 426x240 [SAR 1:1 DAR 71:40], 97 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 125 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
    Stream #0:2: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 120x90 [SAR 1:1 DAR 4:3], 90k tbr, 90k tbn, 90k tbc
    
Input #1, png_pipe, from 'watermark150x125.png':
    
  Duration: N/A, bitrate: N/A
    
    Stream #1:0: Video: png, rgba, 150x125 [SAR 2835:2835 DAR 6:5], 25 tbr, 25 tbn, 25 tbc
    
[swscaler @ 0x7f9521013e00] deprecated pixel format used, make sure you did set range correctly
    
[libx264 @ 0x7f9521030e00] using SAR=1/1
    
[libx264 @ 0x7f9521030e00] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    
[libx264 @ 0x7f9521030e00] profile High, level 2.1
    
[libx264 @ 0x7f9521030e00] 264 - core 144 r2533 c8a773e - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=6 lookahead_threads=1 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=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'output.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2avc1mp41
    
    artist          : a1
    
    album           :
    
    comment         : 
    
    date            : 0
    
    genre           :
    
    title           : a1
    
    encoder         : Lavf56.25.101
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 426x240 [SAR 1:1 DAR 71:40], q=-1--1, 29.97 fps, 30k tbn, 29.97 tbc (default)
    
    Metadata:
    
      encoder         : Lavc56.26.100 libx264
    
    Stream #0:1(und): Audio: aac (libvo_aacenc) ([64][0][0][0] / 0x0040), 44100 Hz, stereo, s16, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
      encoder         : Lavc56.26.100 libvo_aacenc
    
Stream mapping:
    
  Stream #0:0 (h264) -> overlay:main (graph 0)
    
  Stream #0:2 (mjpeg) -> overlay:overlay (graph 0)
    
  overlay (graph 0) -> Stream #0:0 (libx264)
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (libvo_aacenc))
    
Press [q] to stop, [?] for help
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 385 times
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 564 times
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 546 times
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 569 times
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 593 times
    
[Parsed_overlay_0 @ 0x7f9520518800] [framesync @ 0x7f9521021e28] Buffer queue overflow, dropping.
    
    Last message repeated 312 times
    
frame= 3041 fps=645 q=-1.0 Lsize=    1800kB time=00:01:41.52 bitrate= 145.3kbits/s dup=2975 drop=0
    
video:149kB audio:1587kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3.700745%
    
[libx264 @ 0x7f9521030e00] frame I:14    Avg QP:19.91  size:  6947
    
[libx264 @ 0x7f9521030e00] frame P:768   Avg QP:10.30  size:    27
    
[libx264 @ 0x7f9521030e00] frame B:2259  Avg QP:13.67  size:    15
    
[libx264 @ 0x7f9521030e00] consecutive B-frames:  0.9%  0.1%  0.1% 98.9%
    
[libx264 @ 0x7f9521030e00] mb I  I16..4: 18.7% 59.0% 22.3%
    
[libx264 @ 0x7f9521030e00] mb P  I16..4:  0.0%  0.0%  0.0%  P16..4:  0.1%  0.0%  0.0%  0.0%  0.0%    skip:99.9%
    
[libx264 @ 0x7f9521030e00] mb B  I16..4:  0.0%  0.0%  0.0%  B16..8:  0.1%  0.0%  0.0%  direct: 0.0%  skip:99.9%  L0:50.7% L1:49.3% BI: 0.0%
    
[libx264 @ 0x7f9521030e00] 8x8 transform intra:59.1% inter:31.9%
    
[libx264 @ 0x7f9521030e00] coded y,uvDC,uvAC intra: 21.4% 12.4% 7.4% inter: 0.0% 0.0% 0.0%
    
[libx264 @ 0x7f9521030e00] i16 v,h,dc,p: 39% 30% 30%  0%
    
[libx264 @ 0x7f9521030e00] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 34% 47% 16%  1%  0%  0%  1%  0%  1%
    
[libx264 @ 0x7f9521030e00] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 20% 38% 15%  3%  3%  3%  6%  4%  7%
    
[libx264 @ 0x7f9521030e00] i8c dc,h,v,p: 80% 15%  4%  1%
    
[libx264 @ 0x7f9521030e00] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x7f9521030e00] ref P L0: 96.5%  1.2%  2.3%
    
[libx264 @ 0x7f9521030e00] ref B L0: 51.5% 48.5%
    
[libx264 @ 0x7f9521030e00] ref B L1: 99.6%  0.4%
    
[libx264 @ 0x7f9521030e00] kb/s:11.97

  • Streaming H.264 over UDP using FFmpeg, and "dimensions not set" error

    3 septembre 2015, par Baris Demiray

    I’m trying to stream H.264 over UDP with no luck so far. Here is a minimal code that you can reproduce the problem.

    To compile,

    g++ -o test -lavcodec -lavformat -lavutil test.cpp

    Extra information, I start ffplay as follows. Currently it’s of no use.

    ffplay -i udp://127.0.0.1:8554/live.sdp

    Output of my code (see avio_open() call),

    [libx264 @ 0x6a26c0] using mv_range_thread = 24
    
[libx264 @ 0x6a26c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
    
[libx264 @ 0x6a26c0] profile High, level 3.1
    
Output #0, h264, to 'udp://127.0.0.1:8554/live.sdp':
    
    Stream #0:0, 0, 0/0: Video: h264 (libx264), -1 reference frame, none, q=-1--1
    
[h264 @ 0x6a2020] dimensions not set
    
Cannot write header to stream: Success

    And the code,

    extern "C" {
    
    #include <libavcodec></libavcodec>avcodec.h>
    
    #include <libavformat></libavformat>avformat.h>
    
    #include <libavutil></libavutil>avutil.h>
    
}
    

    
#include <iostream>
    
using namespace std;
    

    
int main() {
    
    AVCodecContext* m_codecContext;
    
    AVCodec* m_codec;
    
    AVFormatContext* m_formatContext;
    
    AVStream* m_stream;
    

    
    unsigned m_outWidth = 768;
    
    unsigned m_outHeight = 608;
    

    
    av_register_all();
    
    avcodec_register_all();
    
    avformat_network_init();
    

    
    int errorStatus = 0;
    
    char errorLog[128] = { 0 };
    
    av_log_set_level(AV_LOG_TRACE);
    

    
    string m_output("udp://127.0.0.1:8554/live.sdp");
    

    
    if (avformat_alloc_output_context2(&amp;m_formatContext, NULL, "h264", m_output.c_str()) &lt; 0) {
    
        cerr &lt;&lt; "Cannot allocate output context: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    AVOutputFormat *m_outputFormat = m_formatContext->oformat;
    

    
    m_codec = avcodec_find_encoder(AV_CODEC_ID_H264);
    
    if (!m_codec) {
    
        cerr &lt;&lt; "Cannot find an encoder: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    m_codecContext = avcodec_alloc_context3(m_codec);
    
    if (!m_codecContext) {
    
        cerr &lt;&lt; "Cannot allocate a codec context: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    m_codecContext->pix_fmt = AV_PIX_FMT_YUV420P;
    
    m_codecContext->width = m_outWidth;
    
    m_codecContext->height = m_outHeight;
    

    
    if (avcodec_open2(m_codecContext, m_codec, NULL) &lt; 0) {
    
        cerr &lt;&lt; "Cannot open codec: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    m_stream = avformat_new_stream(m_formatContext, m_codec);
    
    if (!m_stream) {
    
        cerr &lt;&lt; "Cannot create a new stream: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    av_dump_format(m_formatContext, 0, m_output.c_str(), 1);
    

    
    if ((errorStatus = avio_open(&amp;m_formatContext->pb, m_output.c_str(), AVIO_FLAG_WRITE)) &lt; 0) {
    
        cerr &lt;&lt; "Cannot open output: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    if (avformat_write_header(m_formatContext, NULL) &lt; 0) {
    
        cerr &lt;&lt; "Cannot write header to stream: "
    
             &lt;&lt; av_make_error_string(errorLog, 128, errorStatus) &lt;&lt; endl;
    
        return -1;
    
    }
    

    
    cout &lt;&lt; "All done." &lt;&lt; endl;
    

    
    return 0;
    
}
    
</iostream>

    For those who has even more time to spare on my problem, when I change m_output to rtsp://127.0.0.1:8554/live.sdp, and ffplay command to ffplay -rtsp_flags listen -i rtsp://127.0.0.1:8554/live.sdp I get the error,

    [libx264 @ 0x1e056c0] using mv_range_thread = 24
    
[libx264 @ 0x1e056c0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.1 Cache64
    
[libx264 @ 0x1e056c0] profile High, level 3.1
    
Output #0, h264, to 'rtsp://127.0.0.1:8554/live.sdp':
    
    Stream #0:0, 0, 0/0: Video: h264 (libx264), -1 reference frame, none, q=-1--1
    
Cannot open output: Protocol not found

    Am I naive to expect that streaming protocol will be changed like this ?

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