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  • Qu’est ce qu’un éditorial

    21 juin 2013, par

    Ecrivez votre de point de vue dans un article. Celui-ci sera rangé dans une rubrique prévue à cet effet.
    Un éditorial est un article de type texte uniquement. Il a pour objectif de ranger les points de vue dans une rubrique dédiée. Un seul éditorial est placé à la une en page d’accueil. Pour consulter les précédents, consultez la rubrique dédiée.
    Vous pouvez personnaliser le formulaire de création d’un éditorial.
    Formulaire de création d’un éditorial Dans le cas d’un document de type éditorial, les (...)

  • 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 (...)

  • 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.

Sur d’autres sites (3578)

  • colorspace : Add support for BT709

    24 avril 2016, par Jan Ekström
    colorspace : Add support for BT709

    BT.709 coefficients were gathered from the first two parts of BT.709
    
to BT.2020 conversion guide in ARIB STD-B62 (Pt. 1, Chapter 6.2.2).
    
They were additionally confirmed by manually calculating values.
    • [DBH] libavutil/colorspace.h

  • doc/encoders : fix the misleading usage of profile

    20 juin 2020, par Limin Wang
    doc/encoders : fix the misleading usage of profile

    users are getting mislead by the integer, although profile
    
can support both const string and integer.
    
http://ffmpeg.org/pipermail/ffmpeg-user/2020-June/049025.html
    

    Also fix the order of high and main, it's not my intention.
    

    Signed-off-by : Limin Wang <lance.lmwang@gmail.com>
    • [DH] doc/encoders.texi

  • How to transfer video as rtp stream with least delay by FFmpeg

    2 décembre 2020, par Yasushi2019

    I use AXIS M1045-LW supporting rtsp/http access, and my Windows 10 PC can access to the camera through LAN.

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    I would like to transfer the video as rtp with keeping H.264 codec which is supported by the camera.

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    &#xA;

    Image

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    [Camera] == (rtsp or http) ==> [FFmpeg on Win10] == (rtp) ==>

    &#xA;

    &#xA;

    When I accessed the camera through Google Chrome on my Win10 PC, there is only 1 or 2 sec delay.

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    However, when I tried access by the following command, I found over 10 sec delay.

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    How could I reduce the delay as much as possible ?

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    &#xA;

    [Windows Command Prompt A ] (sender)

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    &#xA;C :\Users\xxxx\ffmpeg-4.3.1-2020-11-19-full_build\bin>ffmpeg -re -i rtsp ://xxx:xxx@xxx.xxx.xxx.xxx/axis-media/media.amp -codec:v copy -f rtp rtp ://localhost:30002 -sdp_file stream.sdp&#xA;&#xA;ffmpeg version 4.3.1-2020-11-19-full_build-www.gyan.dev Copyright (c) 2000-2020 the FFmpeg developers&#xA;  built with gcc 10.2.0 (Rev5, Built by MSYS2 project)&#xA;  configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint&#xA;  libavutil      56. 51.100 / 56. 51.100&#xA;  libavcodec     58. 91.100 / 58. 91.100&#xA;  libavformat    58. 45.100 / 58. 45.100&#xA;  libavdevice    58. 10.100 / 58. 10.100&#xA;  libavfilter     7. 85.100 /  7. 85.100&#xA;  libswscale      5.  7.100 /  5.  7.100&#xA;  libswresample   3.  7.100 /  3.  7.100&#xA;  libpostproc    55.  7.100 / 55.  7.100&#xA;Input #0, rtsp, from 'rtsp ://xxx:xxx@xxx.xxx.xxx.xxx/axis-media/media.amp' :&#xA;  Metadata :&#xA;    title : Session streamed with GStreamer&#xA;    comment : rtsp-server&#xA;  Duration : N/A, start : 2.979633, bitrate : N/A&#xA;    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], 2 fps, 25 tbr, 90k tbn, 4 tbc&#xA;Output #0, rtp, to 'rtp ://localhost:30002' :&#xA;  Metadata :&#xA;    title : Session streamed with GStreamer&#xA;    comment : rtsp-server&#xA;    encoder : Lavf58.45.100&#xA;    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], q=2-31, 2 fps, 25 tbr, 90k tbn, 2 tbc&#xA;Stream mapping :&#xA;  Stream #0:0 -> #0:0 (copy)&#xA;Press [q] to stop, [?] for help&#xA;[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -224986 ; changing to 0. This may result in incorrect timestamps in the output file.&#xA;[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -178194 ; changing to 0. This may result in incorrect timestamps in the output file.&#xA;[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -134998 ; changing to 0. This may result in incorrect timestamps in the output file.&#xA;[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -88201 ; changing to 0. This may result in incorrect timestamps in the output file.&#xA;[rtp @ 000002da44da33c0] Non-monotonous DTS in output stream 0:0 ; previous : 0, current : -45002 ; changing to 0. This may result in incorrect timestamps in the output file.&#xA;frame=   89 fps=2.1 q=-1.0 size=     142kB time=00:00:43.01 bitrate=  27.0kbits/s speed=   1x&#xA;

    &#xA;

    [Windows Command Prompt B ] (receiver)

    &#xA;

    &#xA;C :\Users\xxx\ffmpeg-4.3.1-2020-11-19-full_build\bin>ffplay -protocol_whitelist "file,udp,rtp" stream.sdp&#xA;&#xA;ffplay version 4.3.1-2020-11-19-full_build-www.gyan.dev Copyright (c) 2003-2020 the FFmpeg developers&#xA;  built with gcc 10.2.0 (Rev5, Built by MSYS2 project)&#xA;  configuration : —enable-gpl —enable-version3 —enable-static —disable-w32threads —disable-autodetect —enable-fontconfig —enable-iconv —enable-gnutls —enable-libxml2 —enable-gmp —enable-lzma —enable-libsnappy —enable-zlib —enable-libsrt —enable-libssh —enable-libzmq —enable-avisynth —enable-libbluray —enable-libcaca —enable-sdl2 —enable-libdav1d —enable-libzvbi —enable-librav1e —enable-libwebp —enable-libx264 —enable-libx265 —enable-libxvid —enable-libaom —enable-libopenjpeg —enable-libvpx —enable-libass —enable-frei0r —enable-libfreetype —enable-libfribidi —enable-libvidstab —enable-libvmaf —enable-libzimg —enable-amf —enable-cuda-llvm —enable-cuvid —enable-ffnvcodec —enable-nvdec —enable-nvenc —enable-d3d11va —enable-dxva2 —enable-libmfx —enable-libcdio —enable-libgme —enable-libmodplug —enable-libopenmpt —enable-libopencore-amrwb —enable-libmp3lame —enable-libshine —enable-libtheora —enable-libtwolame —enable-libvo-amrwbenc —enable-libilbc —enable-libgsm —enable-libopencore-amrnb —enable-libopus —enable-libspeex —enable-libvorbis —enable-ladspa —enable-libbs2b —enable-libflite —enable-libmysofa —enable-librubberband —enable-libsoxr —enable-chromaprint&#xA;  libavutil      56. 51.100 / 56. 51.100&#xA;  libavcodec     58. 91.100 / 58. 91.100&#xA;  libavformat    58. 45.100 / 58. 45.100&#xA;  libavdevice    58. 10.100 / 58. 10.100&#xA;  libavfilter     7. 85.100 /  7. 85.100&#xA;  libswscale      5.  7.100 /  5.  7.100&#xA;  libswresample   3.  7.100 /  3.  7.100&#xA;  libpostproc    55.  7.100 / 55.  7.100&#xA;[sdp @ 000001832f4ecec0] decoding for stream 0 failed    0B f=0/0&#xA;Input #0, sdp, from 'stream.sdp' :&#xA;  Metadata :&#xA;    title : Session streamed with GStreamer&#xA;  Duration : N/A, bitrate : N/A&#xA;    Stream #0:0 : Video : h264 (Baseline), yuvj420p(pc, bt709, progressive), 320x240 [SAR 1:1 DAR 4:3], 2 fps, 2 tbr, 90k tbn, 4 tbc&#xA;[swscaler @ 0000018336868d00] deprecated pixel format used, make sure you did set range correctly&#xA; 127.52 M-V : -0.021 fd=  12 aq=    0KB vq=   11KB sq=    0B f=0/0&#xA;

    &#xA;

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