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Autres articles (40)

  • Mise à disposition des fichiers

    14 avril 2011, par

    Par défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
    Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
    Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • 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 (6043)

  • avformat/rcwtdec : add RCWT Closed Captions demuxer

    2 avril 2024, par Marth64
    avformat/rcwtdec : add RCWT Closed Captions demuxer
    

    RCWT (Raw Captions With Time) is a format native to ccextractor,
    a commonly used OSS tool for processing 608/708 Closed Captions (CC).
    RCWT can be used to archive the original extracted CC bitstream.
    The muxer was added in January 2024. In this commit, add the demuxer.

    One can now demux RCWT files for rendering in ccaption_dec or interop
    with ccextractor (which produces RCWT). Using the muxer/demuxer combo,
    the CC bits can be kept for processing or rendering with either tool.
    This can be an effective way to backup an original CC stream, including
    format extensions like EIA-708 and overall original presentation.

    Signed-off-by : Marth64 <marth64@proxyid.net>

    • [DH] Changelog
    • [DH] doc/demuxers.texi
    • [DH] libavformat/Makefile
    • [DH] libavformat/allformats.c
    • [DH] libavformat/rcwtdec.c
  • I have an MJPEG file decoded with the Intel® IPP JPEG encoder [8.1.42291], how can I convert it to MP4 using ffmpeg ? [closed]

    8 mars 2024, par Renan Aragão

    When trying to convert the MJPEG file with ffmpeg, it gives the following error : Output file #0 does not contain any stream.

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    This is the complete output :

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    .\ffmpeg.exe -init_hw_device qsv=intel,child_device=1 -filter_hw_device intel -i .\19a57e41-244c-45a4-af41-5069dd3cbe4a.tmp -an -vf "format=nv12,hwupload=extra_hw_frames=20" -c:v h264_qsv record.mp4 -y -loglevel verbose&#xA;ffmpeg version n5.0.1-5-g240d82f26e-20220613 Copyright (c) 2000-2022 the FFmpeg developers&#xA;  built with gcc 11.2.0 (crosstool-NG 1.24.0.533_681aaef)&#xA;  configuration: --prefix=/ffbuild/prefix --pkg-config-flags=--static --pkg-config=pkg-config --cross-prefix=x86_64-w64-mingw32- --arch=x86_64 --target-os=mingw32 --enable-version3 --disable-debug --disable-w32threads --enable-pthreads --enable-iconv --enable-libxml2 --enable-zlib --enable-libfreetype --enable-libfribidi --enable-gmp --enable-lzma --enable-fontconfig --enable-libvorbis --enable-opencl --disable-libpulse --enable-libvmaf --disable-libxcb --disable-xlib --enable-amf --enable-libaom --enable-libaribb24 --disable-avisynth --enable-libdav1d --disable-libdavs2 --disable-libfdk-aac --enable-ffnvcodec --enable-cuda-llvm --disable-frei0r --enable-libgme --enable-libass --enable-libbluray --enable-libmp3lame --enable-libopus --enable-librist --enable-libtheora --enable-libvpx --enable-libwebp --enable-lv2 --enable-libmfx --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenh264 --enable-libopenjpeg --enable-libopenmpt --enable-librav1e --disable-librubberband --enable-schannel --enable-sdl2 --enable-libsoxr --enable-libsrt --enable-libsvtav1 --enable-libtwolame --enable-libuavs3d --disable-libdrm --disable-vaapi --disable-libvidstab --enable-vulkan --enable-libshaderc --enable-libplacebo --disable-libx264 --disable-libx265 --disable-libxavs2 --disable-libxvid --enable-libzimg --enable-libzvbi --extra-cflags=-DLIBTWOLAME_STATIC --extra-cxxflags= --extra-ldflags=-pthread --extra-ldexeflags= --extra-libs=-lgomp --extra-version=20220613&#xA;  libavutil      57. 17.100 / 57. 17.100&#xA;  libavcodec     59. 18.100 / 59. 18.100&#xA;  libavformat    59. 16.100 / 59. 16.100&#xA;  libavdevice    59.  4.100 / 59.  4.100&#xA;  libavfilter     8. 24.100 /  8. 24.100&#xA;  libswscale      6.  4.100 /  6.  4.100&#xA;  libswresample   4.  3.100 /  4.  3.100&#xA;WARNING: defaulting child_device_type to AV_HWDEVICE_TYPE_DXVA2 for compatibility with old commandlines. This behaviour will be removed in the future. Please explicitly set device type via "-init_hw_device" option.&#xA;[AVHWDeviceContext @ 000001953dac2f40] Using D3D9Ex device.&#xA;[AVHWDeviceContext @ 000001953dac2a80] Initialize MFX session: API version is 1.35, implementation version is 1.35&#xA;Input #0, mov,mp4,m4a,3gp,3g2,mj2, from &#x27;.\19a57e41-244c-45a4-af41-5069dd3cbe4a.tmp&#x27;:&#xA;  Metadata:&#xA;    major_brand     : mp42&#xA;    minor_version   : 0&#xA;    compatible_brands: mp42isom&#xA;    creation_time   : 2024-03-06T13:32:38.000000Z&#xA;  Duration: 00:00:00.00, bitrate: N/A&#xA;Output #0, mp4, to &#x27;record.mp4&#x27;:&#xA;Output file #0 does not contain any stream&#xA;

    &#xA;

    I try using ipp in python and dotnet, but idon't found sample code. I need convert MJPEG Intel IPP to mp4.

    &#xA;

  • Filter concat has an unconnected output while Video concatenation in ffmpeg wrapper in java

    28 février 2024, par Thor

    I am trying to stitch variable number of videos using ffmpeg wrapper.

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    I have this code :

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    private void videoStich(List<string> videoPaths){&#xA;        FFmpeg ffmpeg = null;&#xA;        FFprobe ffprobe=null;&#xA;        String stitchedOutputPath = outputFolder &#x2B; "/stitched_output.mp4";&#xA;&#xA;        try {&#xA;            ffmpeg = new FFmpeg();&#xA;            ffprobe = new FFprobe();&#xA;        } catch (IOException e) {&#xA;            throw new RuntimeException(e);&#xA;        }&#xA;&#xA;&#xA;        FFmpegBuilder builder = new FFmpegBuilder();&#xA;&#xA;        for (int i = 0; i &lt; videoPaths.size(); i&#x2B;&#x2B;) {&#xA;            String videoPath = videoPaths.get(i);&#xA;            builder.addInput(videoPath);&#xA;        }&#xA;&#xA;        // Add complex filter for concatenation&#xA;        StringBuilder complexFilter = new StringBuilder();&#xA;        for (int i = 0; i &lt; videoPaths.size(); i&#x2B;&#x2B;) {&#xA;            complexFilter.append("[").append(i).append(":v][").append(i).append(":a]");&#xA;//            if (i &lt; videoPaths.size() - 1) {&#xA;//                complexFilter.append("[");&#xA;//            }&#xA;        }&#xA;        complexFilter.append("concat=n=").append(videoPaths.size()).append(":v=1:a=1[v][a]");&#xA;&#xA;        builder.setComplexFilter(complexFilter.toString())&#xA;                .addOutput(stitchedOutputPath)&#xA;                .setFormat("mp4")&#xA;                .done();&#xA;&#xA;        FFmpegExecutor executor = new FFmpegExecutor(ffmpeg, ffprobe);&#xA;        executor.createJob(builder).run();&#xA;    }&#xA;</string>

    &#xA;

    but getting this error :

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    2024-02-28T16:30:53.033&#x2B;05:30  INFO 4711 --- [sample_project] [pool-3-thread-1] net.bramp.ffmpeg.RunProcessFunction      : ffmpeg -version&#xA;2024-02-28T16:30:53.126&#x2B;05:30  INFO 4711 --- [sample_project] [pool-3-thread-1] net.bramp.ffmpeg.RunProcessFunction      : ffmpeg -y -v error -i src/main/resources/cutted_videos/0_trimmed.mp4 -i src/main/resources/cutted_videos/1_trimmed.mp4 -filter_complex [0:v][0:a][1:v][1:a]concat=n=2:v=1:a=1[v][a] -f mp4 src/main/resources/cutted_videos/stitched_output.mp4&#xA;Filter concat has an unconnected output&#xA;java.lang.RuntimeException: java.io.IOException: ffmpeg returned non-zero exit status. Check stdout.&#xA;

    &#xA;

    I have been trying to fix this since a long time and didn't find any issue with the filter, it is looking good to me. Can anyone help me with it ?

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    EDIT :&#xA;I found that when I use this command in terminal :

    &#xA;

    ffmpeg -i in1.mp4 -i in2.mp4\&#xA;            -filter_complex "[0:v] [0:a] [1:v] [1:a] \&#xA;concat=n=2:v=1:a=1 [v] [a]" \&#xA;            -f mp4  output_test5.mp4&#xA;

    &#xA;

    it didn ;t work&#xA;while when i used this :

    &#xA;

    ffmpeg -i in1.mp4 -i in2.mp4\&#xA;            -filter_complex "[0:v] [0:a] [1:v] [1:a] \&#xA;concat=n=2:v=1:a=1 [v] [a]" \&#xA;            -f mp4 -map "[v]" -map "[a]" output_test4.mp4&#xA;

    &#xA;

    it worked. I think i need to add -map "[v]" -map "[a]" somehow in the code.

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    but when i try to add :&#xA;builder.setComplexFilter(complexFilter.toString())&#xA;.addOutput(stitchedOutputPath)&#xA;.setFormat("mp4")&#xA;.map()&#xA;.done() ;

    &#xA;

    or

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    builder.setComplexFilter(complexFilter.toString())&#xA;.addOutput(stitchedOutputPath)&#xA;.setFormat("mp4")&#xA;.setMap()&#xA;.done() ;

    &#xA;

    both .set() or setMap() doesn't exist. What to do, how to do ?

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