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    8 février 2011, par

    Par défaut, beaucoup de fonctionnalités sont limitées aux administrateurs mais restent configurables indépendamment pour modifier leur statut minimal d’utilisation notamment : la rédaction de contenus sur le site modifiables dans la gestion des templates de formulaires ; l’ajout de notes aux articles ; l’ajout de légendes et d’annotations sur les images ;

  • Dépôt de média et thèmes par FTP

    31 mai 2013, par

    L’outil MédiaSPIP traite aussi les média transférés par la voie FTP. Si vous préférez déposer par cette voie, récupérez les identifiants d’accès vers votre site MédiaSPIP et utilisez votre client FTP favori.
    Vous trouverez dès le départ les dossiers suivants dans votre espace FTP : config/ : dossier de configuration du site IMG/ : dossier des média déjà traités et en ligne sur le site local/ : répertoire cache du site web themes/ : les thèmes ou les feuilles de style personnalisées tmp/ : dossier de travail (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
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  • ffmpeg copy a part of a video wrt to milliseconds accurately

    25 août 2016, par Santhosh Yedidi

    I am using ffmpeg to copy a part of video.

    I am using mpv to view the video. I get the start time and end time from it.

    ffmpeg -i "main.flv" -ss 01:54:34.340 -to 02:01:13.073 -c copy copied.mp4

    the problem i am facing is the video does not start from 01:54:34.340, it starts from 01:54:34.608

    so its shifting the start poistion.

    Is there any way i can start from the exact millisecond position or form that particular frame.

    or is there command to mention start frame number and end frame number. For that mpv also should tell me the frame numbers in ths OSD

    the output of the above command is

    Input #0, flv, from 'main.flv':
    
  Metadata:
    
    author          : 
    
    copyright       : 
    
    description     : 
    
    keywords        : 
    
    rating          : 
    
    title           : 
    
    presetname      : Custom
    
    creationdate    : Thu Aug 25 04:50:55 2016
    
                    : 
    
    videodevice     : VidBlaster
    
    avclevel        : 31
    
    avcprofile      : 77
    
    videokeyframe_frequency: 5
    
    audiodevice     : Realtek HD Audio Input
    
    audiochannels   : 2
    
    audioinputvolume: 100
    
  Duration: 03:55:58.86, start: 0.033000, bitrate: 855 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p(tv), 640x480 [SAR 1:1 DAR 4:3], 819 kb/s, 30.30 fps, 29.97 tbr, 1k tbn, 59.94 tbc
    
    Stream #0:1: Audio: aac (LC), 22050 Hz, stereo, fltp, 49 kb/s
    
Output #0, mp4, to 'copied.mp4':
    
  Metadata:
    
    author          : 
    
    copyright       : 
    
    description     : 
    
    keywords        : 
    
    rating          : 
    
    title           : 
    
    presetname      : Custom
    
    creationdate    : Thu Aug 25 04:50:55 2016
    
                    : 
    
    videodevice     : VidBlaster
    
    avclevel        : 31
    
    avcprofile      : 77
    
    videokeyframe_frequency: 5
    
    audiodevice     : Realtek HD Audio Input
    
    audiochannels   : 2
    
    audioinputvolume: 100
    
    encoder         : Lavf57.25.100
    
    Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuv420p, 640x480 [SAR 1:1 DAR 4:3], q=2-31, 819 kb/s, 30.30 fps, 29.97 tbr, 16k tbn, 1k tbc
    
    Stream #0:1: Audio: aac (LC) ([64][0][0][0] / 0x0040), 22050 Hz, stereo, 49 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=    0 fps=0.0 q=-1.0 size=       0kB time=00:00:00.00 bitrate=N/A speed=  frame=11906 fps=8002 q=-1.0 Lsize=   41574kB time=00:06:38.75 bitrate= 854.1kbits/s speed= 268x    
    
video:38866kB audio:2336kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.904480%

  • Streaming Rtsp stream to website using FFmpeg and FFserver.

    23 août 2016, par Pallav Gupta

    I am working on a website for a client and one of the requirement is to embed the video from HikVision DVR DS7116. I have the RTSP url for the DVR. I want help with FFmpeg and FFserver. I already have written my ffserver config file.

    /etc/ffserver.config
    

    
Port 9500
    
# bind to all IPs aliased or not
    
BindAddress 0.0.0.0
    
# max number of simultaneous clients
    
MaxClients 1000
    
# max bandwidth per-client (kb/s)
    
MaxBandwidth 10000
    
# Suppress that if you want to launch ffserver as a daemon.
    
NoDaemon
    

    
<feed>
    
File /tmp/feed1.ffm
    
FileMaxSize 5M
    
</feed>
    

    
<stream>
    
Feed feed1.ffm
    
Format swf
    
VideoCodec flv
    
VideoFrameRate 15
    
VideoBufferSize 80000
    
VideoBitRate 100
    
VideoQMin 1
    
VideoQMax 5
    
VideoSize 352x288
    
PreRoll 0
    
Noaudio
    
</stream>

    I next run my ffserver and ffmpeg command which is

    ffserver &amp; ffmpeg -re -i rtsp://admin:12345@192.168.1.3/MPEG-4/ch1/main/av_stream  http://192.168.1.105:9500/feed1.ffm

    The output which i receive is as follows

    ffmpeg version N-80901-gfebc862 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.8 (Ubuntu 4.8.4-2ubuntu1~14.04.3)
    
  configuration: --extra-libs=-ldl --prefix=/opt/ffmpeg --mandir=/usr/share/man --enable-avresample --disable-debug --enable-nonfree --enable-gpl --enable-version3 --enable-libopencore-amrnb --enable-libopencore-amrwb --disable-decoder=amrnb --disable-decoder=amrwb --enable-libpulse --enable-libfreetype --enable-gnutls --enable-libx264 --enable-libx265 --enable-libfdk-aac --enable-libvorbis --enable-libmp3lame --enable-libopus --enable-libvpx --enable-libspeex --enable-libass --enable-avisynth --enable-libsoxr --enable-libxvid --enable-libvidstab
    

    
  libavutil      55. 28.100 / 55. 28.100
    
  libavcodec     57. 48.101 / 57. 48.101
    
  libavformat    57. 41.100 / 57. 41.100
    
  libavdevice    57.  0.102 / 57.  0.102
    
  libavfilter     6. 47.100 /  6. 47.100
    
  libavresample   3.  0.  0 /  3.  0.  0
    
  libswscale      4.  1.100 /  4.  1.100
    
  libswresample   2.  1.100 /  2.  1.100
    
  libpostproc    54.  0.100 / 54.  0.100
    

    
[rtsp @ 0x20c4720] Missing PPS in sprop-parameter-sets, ignoring
    
[h264 @ 0x20c7f60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x20c7f60] decode_slice_header error
    
[h264 @ 0x20c7f60] no frame!
    
[rtsp @ 0x20c4720] RTP: missed 1137 packets
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1125 packets
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1126 packets
    

    
Guessed Channel Layout for Input Stream #0.1 : mono
    
Input #0, rtsp, from 'rtsp://admin:12345@192.168.1.3/MPEG-4/ch1/main/av_stream':
    
  Metadata:
    
    title           : HIK Media Server
    
    comment         : HIK Media Server Session Description : standard
    
  Duration: N/A, start: 0.000000, bitrate: N/A
    
    Stream #0:0: Video: h264 (Baseline), yuv420p, 352x288, 10 fps, 25 tbr, 90k tbn, 20 tbc
    
    Stream #0:1: Audio: pcm_mulaw, 8000 Hz, 1 channels, s16, 64 kb/s
    
[ffm @ 0x21c0e80] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
    

    
Output #0, ffm, to 'http://192.168.1.105:9500/feed1.ffm':
    
  Metadata:
    
    title           : HIK Media Server
    
    comment         : HIK Media Server Session Description : standard
    
    creation_time   : now
    
    encoder         : Lavf57.41.100
    
    Stream #0:0: Video: flv1 (flv), yuv420p, 352x288, q=1-5, 100 kb/s, 10 fps, 1000k tbn, 15 tbc
    

    
    Metadata:
    
      encoder         : Lavc57.48.101 flv
    
    Side data:
    
      cpb: bitrate max/min/avg: 200000/0/100000 buffer size: 655360000 vbv_delay: -1
    

    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> flv1 (flv))
    
Press [q] to stop, [?] for help
    
frame=    0 fps=0.0 q=0.0 size=       4kB time=00:00:00.00 bitrate=N/A speed=   frame=    0 fps=0.0 q=0.0 size=       4kB time=00:00:00.00 bitrate=N/A speed=   frame=    0 fps=0.0 q=0.0 size=       4kB time=00:00:00.00 bitrate=N/A speed=   Past duration 1.003319 too large
    
    Last message repeated 1 times
    
Past duration 1.005333 too large
    
frame=   31 fps= 15 q=31.0 size=      56kB time=00:00:02.00 bitrate= 229.4kbits/Past duration 1.005653 too large
    
Past duration 1.005989 too large
    
frame=   37 fps= 15 q=24.8 size=      76kB time=00:00:02.40 bitrate= 259.4kbits/Past duration 1.006660 too large
    
Past duration 1.006996 too large
    
frame=   46 fps= 15 q=31.0 size=      80kB time=00:00:03.00 bitrate= 218.5kbits/Past duration 1.007988 too large
    
Past duration 1.008659 too large
    
frame=   53 fps= 15 q=31.0 size=      96kB time=00:00:03.46 bitrate= 226.9kbits/Past duration 1.009987 too large
    
Past duration 1.010323 too large
    
frame=   61 fps= 15 q=24.8 size=     116kB time=00:00:04.00 bitrate= 237.6kbits/Past duration 1.010994 too large
    
Past duration 1.011330 too large
    
Past duration 1.011986 too large
    
frame=   68 fps= 15 q=31.0 size=     120kB time=00:00:04.46 bitrate= 220.1kbits/Past duration 1.012657 too large
    

    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1114 packets
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1115 packets
    
Past duration 1.012993 too large
    
frame=   76 fps= 15 q=31.0 size=     140kB time=00:00:05.00 bitrate= 229.4kbits/Past duration 1.013664 too large
    
Past duration 1.014320 too large
    
Past duration 1.014656 too large
    
frame=   83 fps= 15 q=31.0 size=     144kB time=00:00:05.46 bitrate= 215.8kbits/Past duration 1.015327 too large
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1103 packets
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1104 packets
    

    
Past duration 1.015999 too large
    
frame=   91 fps= 15 q=31.0 size=     160kB time=00:00:06.00 bitrate= 218.5kbits/Past duration 1.016655 too large
    
Past duration 1.017326 too large
    
Past duration 1.017998 too large
    
frame=   98 fps= 15 q=31.0 size=     180kB time=00:00:06.46 bitrate= 228.0kbits/Past duration 1.018654 too large
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1092 packets
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 1093 packets
    
Past duration 1.019325 too large
    
frame=  106 fps= 15 q=31.0 size=     184kB time=00:00:07.00 bitrate= 215.3kbits/Past duration 1.019997 too large
    
[rtsp @ 0x20c4720] max delay reached. need to consume packet
    
[rtsp @ 0x20c4720] RTP: missed 35 packets
    
Past duration 1.020653 too large
    
frame=  161 fps= 15 q=31.0 size=     264kB time=00:00:10.66 bitrate= 202.8kbits/Past duration 1.032661 too large
    
Past duration 1.033333 too large
    
frame=  167 fps= 15 q=31.0 Lsize=     276kB time=00:00:11.06 bitrate= 204.3kbits/s dup=94 drop=0 speed=0.964x
    
video:265kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 4.280833%

    I can see that with some errors, the stream starts.
    When i put the output url in my html code, there is no stream. I also tried playing the network stream in VLC and did not get anything. Can anyone please help me with that ? Any leads are also appreciated. Thank you.

    My HTML Code is :

  • FFmpeg / libavcodec : Encoding with x264 ignores bitrate setting

    16 août 2016, par Fasteno

    I am trying to write a video using the FFmpeg libraries. So far I can successfully encode videos with the .avi extension, but when I use the .mp4 extension the application ignores completely the bitrate option I specify.

    Here’s a snippet of the code I use to specify the encoding settings :

    //define video stream
    
AVOutputFormat* outFmt = nullptr;
    
outFmt = av_guess_format(NULL, m_pcFilename.c_str(), NULL);
    
avformat_alloc_output_context2(&amp;m_pcOC, outFmt, NULL, NULL);
    
AVFormatContext* m_pcOC;
    
AVStream* m_pcVideoSt = avformat_new_stream(m_pcOC, NULL);
    
AVCodec* codec = nullptr;
    
codec = avcodec_find_encoder(codecID);
    
avcodec_get_context_defaults3(m_pcVideoSt->codec, codec);
    
//set some parameters
    
double dBitrate = std::stod(bitrate);
    
m_pcVideoSt->codec->codec_id = codecID;
    
m_pcVideoSt->codec->codec_type = AVMEDIA_TYPE_VIDEO;
    
m_pcVideoSt->codec->bit_rate = dBitrate;
    
m_pcVideoSt->codec->bit_rate_tolerance = 20000;
    
m_pcVideoSt->codec->width = m_iOutCols;
    
m_pcVideoSt->codec->height = m_iOutRows;
    
m_pcVideoSt->codec->time_base.den = static_cast<int>(dFps);
    
m_pcVideoSt->codec->time_base.num = 1;
    
if (m_pcOC->oformat->flags &amp; AVFMT_GLOBALHEADER)
    
{
    
  m_pcVideoSt->codec->flags |= CODEC_FLAG_GLOBAL_HEADER;
    
}
    
/* open the codec */
    
AVDictionary* pcOpts = nullptr;
    
int res1 = av_dict_set(&amp;pcOpts, "b", bitrate.c_str(), 0);
    
int res = avcodec_open2(m_pcVideoSt->codec, codec, &amp;pcOpts);
    
</int>

    This is the output I get when creating a .avi file

    ffprobe version 2.8.6 Copyright (c) 2007-2016 the FFmpeg developers
    
built with gcc 5.3.0 (GCC)
    
configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
    
libavutil      54. 31.100 / 54. 31.100
    
libavcodec     56. 60.100 / 56. 60.100
    
libavformat    56. 40.101 / 56. 40.101
    
libavdevice    56.  4.100 / 56.  4.100
    
libavfilter     5. 40.101 /  5. 40.101
    
libswscale      3.  1.101 /  3.  1.101
    
libswresample   1.  2.101 /  1.  2.101
    
libpostproc    53.  3.100 / 53.  3.100
    
Input #0, avi, from 'testGrey2.avi':
    
Metadata:
    
encoder         : Lavf56.40.101
    
Duration: 00:01:20.00, start: 0.000000, **bitrate: 433 kb/s**
    
Stream #0:0: Video: **mpeg4 (Advanced Simple Profile)** (FMP4 / 0x34504D46), yuv420p, 720x576 [SAR 1:1 DAR 5:4], 428 kb/s, 25 fps, 25 tbr, 25 tbn, 25 tbc

    And this is what I get when creating an .mp4 file

    ffprobe version 2.8.6 Copyright (c) 2007-2016 the FFmpeg developers
    
built with gcc 5.3.0 (GCC)
    
configuration: --disable-static --enable-shared --enable-gpl --enable-    version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-    libxavs --enable-libxvid --enable-lzma --enable-decklink --enable-zlib
    
libavutil      54. 31.100 / 54. 31.100
    
libavcodec     56. 60.100 / 56. 60.100
    
libavformat    56. 40.101 / 56. 40.101
    
libavdevice    56.  4.100 / 56.  4.100
    
libavfilter     5. 40.101 /  5. 40.101
    
libswscale      3.  1.101 /  3.  1.101
    
libswresample   1.  2.101 /  1.  2.101
    
libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'testGrey2.mp4':
    
Metadata:
    
major_brand     : isom
    
minor_version   : 512
    
compatible_brands: isomiso2avc1mp41
    
encoder         : Lavf56.40.101
    
Duration: 00:01:20.00, start: 0.000000, **bitrate: 1542 kb/s**
    
Stream #0:0(und): **Video: h264 (High)** (avc1 / 0x31637661), yuv420p, 720x576, 1540 kb/s, 25 fps, 25 tbr, 12800 tbn, 50 tbc (default)
    
Metadata:
    
  handler_name    : VideoHandler

    Any ideas on why is this happening ? What is the preferred way to specify the bitrate of the output video ?

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