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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (10242)

  • Using libav to encode RGBA frames into MP4 but the output is a mess

    5 octobre 2019, par Cu2S

    I’m trying to decode a video into RGB frames, and then postprocess the frames, finally encode the frames into a video. But the output video is completely a mess :
    Screenshot from potplayer

    I wrote a minimal example to illustrate my idea. First, I read some information from some source video :

        AVFormatContext* inputFormatCtx = nullptr;
    
    int ret = avformat_open_input(&inputFormatCtx, inputParamsVideo, nullptr, nullptr);
    
    assert(ret >= 0);
    
    ret = avformat_find_stream_info(inputFormatCtx, NULL);
    
    av_dump_format(inputFormatCtx, 0, inputParamsVideo, 0);
    

    
    assert(ret >= 0);
    
    AVStream* inputVideoStream = nullptr;
    
    for (int i = 0; i < inputFormatCtx->nb_streams; i++)
    
    {
    
        const auto inputStream = inputFormatCtx->streams[i];
    
        if (inputStream->codec->codec_type == AVMEDIA_TYPE_VIDEO)
    
        {
    
            inputVideoStream = inputStream;
    
            break;
    
        }
    
    }
    

    
    assert(inputVideoStream != nullptr);
    
    AVCodecParameters* inputParams = inputVideoStream->codecpar;
    
    AVRational framerate = inputVideoStream->codec->framerate;
    
    auto gop_size = inputVideoStream->codec->gop_size;
    
    auto maxBFrames = inputVideoStream->codec->max_b_frames;

    Then I assign the information to the output stream :

    AVFormatContext *outputAVFormat = nullptr;
    
avformat_alloc_output_context2(&outputAVFormat, nullptr, nullptr, kOutputPath);
    
assert(outputAVFormat);
    
AVCodec* codec = avcodec_find_encoder(outputAVFormat->oformat->video_codec);
    
assert(codec);
    
AVCodecContext* encodingCtx = avcodec_alloc_context3(codec);
    
avcodec_parameters_to_context(encodingCtx, inputParams);
    
encodingCtx->time_base = av_inv_q(framerate);
    
encodingCtx->max_b_frames = maxBFrames;
    
encodingCtx->gop_size = gop_size;
    

    

    
if (outputAVFormat->oformat->flags & AVFMT_GLOBALHEADER)
    
    encodingCtx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;
    
AVStream* outStream = avformat_new_stream(outputAVFormat, nullptr);
    
assert(outStream != nullptr);
    
ret = avcodec_parameters_from_context(outStream->codecpar, encodingCtx);
    
assert(ret >= 0);
    
outStream->time_base = encodingCtx->time_base;

    Then I convert RGBA frames(which is read from files) into YUV420P via sws_scale, and encoding :

        ret = avcodec_open2(encodingCtx, codec, nullptr);
    
    assert(ret >= 0);
    
    av_dump_format(outputAVFormat, 0, kOutputPath, 1);
    

    
    ret = avio_open(&outputAVFormat->pb, kOutputPath, AVIO_FLAG_WRITE);
    
    assert(ret >= 0);
    
    ret = avformat_write_header(outputAVFormat, nullptr);
    
    assert(ret >= 0);
    

    
    AVFrame* frame = av_frame_alloc();
    
    frame->width = inputParams->width;
    
    frame->height = inputParams->height;
    
    frame->format = inputParams->format;
    
    frame->pts = 0;
    
    assert(ret >= 0);
    

    
    ret = av_frame_get_buffer(frame, 32);
    
    int frameCount = 0;
    
    assert(ret >= 0);
    
    ret = av_frame_make_writable(frame);
    
    assert(ret >= 0);
    
    SwsContext* swsContext = sws_getContext(inputParams->width, inputParams->height,
    
        AV_PIX_FMT_RGBA, frame->width,
    
        frame->height, static_cast<avpixelformat>(inputParams->format),
    
        SWS_BILINEAR, NULL, NULL, NULL);
    

    

    
    for (auto inputPicPath : std::filesystem::directory_iterator(kInputDir))
    
    {
    
        int width, height, comp;
    
        unsigned char* data = stbi_load(inputPicPath.path().string().c_str(), &amp;width, &amp;height, &amp;comp, 4);
    
        int srcStrides[1] = { 4 * width };
    
        int ret = sws_scale(swsContext, &amp;data, srcStrides, 0, height, frame->data,
    
            frame->linesize);
    
        assert(ret >= 0);
    
        frame->pts = frameCount;
    
        //frame->pict_type = AV_PICTURE_TYPE_I;
    
        frameCount += 1;
    
        encode(encodingCtx, frame, 0, outputAVFormat);
    

    
        stbi_image_free(data);
    
    }
    

    
    while (encode(encodingCtx, nullptr, 0, outputAVFormat))
    
    {
    
        ;
    
    }
    

    
    static bool encode(AVCodecContext* enc_ctx, AVFrame* frame, std::uint32_t streamIndex,
    
        AVFormatContext * formatCtx)
    
    {
    
        int ret;
    
        int got_output = 0;
    
        AVPacket packet = {};
    
        av_init_packet(&amp;packet);
    
        ret = avcodec_encode_video2(enc_ctx, &amp;packet, frame, &amp;got_output);
    
        assert(ret >= 0);
    
        if (got_output) {
    
            packet.stream_index = streamIndex;
    
            av_packet_rescale_ts(&amp;packet, enc_ctx->time_base, formatCtx->streams[streamIndex]->time_base);
    
            ret = av_interleaved_write_frame(formatCtx, &amp;packet);
    
            assert(ret >= 0);
    
            return true;
    
        }
    
        else {
    
            return false;
    
        }
    
    }
    
</avpixelformat>

    Finally I cleaned up stuff :

        av_write_trailer(outputAVFormat);
    
    sws_freeContext(swsContext);
    
    avcodec_free_context(&amp;encodingCtx);
    
    avio_closep(&amp;outputAVFormat->pb);
    
    avformat_free_context(outputAVFormat);
    
    av_frame_free(&amp;frame);

    I dumped my input format and my output format :

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'H:\Me.MP4':
    
  Metadata:
    
    major_brand     : mp42
    
    minor_version   : 1
    
    compatible_brands: mp41mp42isom
    
    creation_time   : 2019-04-03T05:44:22.000000Z
    
  Duration: 00:00:06.90, start: 0.000000, bitrate: 1268 kb/s
    
    Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 540x960, 1238 kb/s, 29.86 fps, 30 tbr, 600 tbn, 1200 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-04-03T05:44:22.000000Z
    
      handler_name    : Core Media Video
    
    Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 8000 Hz, stereo, fltp, 24 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-04-03T05:44:22.000000Z
    
      handler_name    : Core Media Audio
    
[libx264 @ 000002126F90C1C0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 000002126F90C1C0] profile High, level 3.1, 4:2:0, 8-bit
    
[libx264 @ 000002126F90C1C0] 264 - core 157 - H.264/MPEG-4 AVC codec - Copyleft 2003-2018 - 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=12 lookahead_threads=2 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=0 weightp=2 keyint=12 keyint_min=1 scenecut=40 intra_refresh=0 rc_lookahead=12 rc=abr mbtree=1 bitrate=1238 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to './output.mp4':
    
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709), 540x960, q=2-31, 1238 kb/s, 29.86 tbn

    Update :

    After I deleted

    encodingCtx->flags |= AV_CODEC_FLAG_GLOBAL_HEADER;

    the output video is right. Also, outputting avi works, too.

  • Reverse and areverse crash the computer

    14 août 2019, par Alex

    I am using this command :

    ffmpeg -y -ss 00:03:52.612 -i "H:\DCIM\100GOPRO\GOPR3258.MP4" -r 60 -t 00:00:12.140 -vf reverse -af afade=t=in:ss=0:d=1,afade=t=out:st='00\:00\:11.140':d=1,areverse 6.mp4

    It increases the memory consumption of the computer to a point of collapse.

    Putting it like

    ffmpeg -y -ss 00:03:52.612 -i "H:\DCIM\100GOPRO\GOPR3258.MP4" -r 60 -t 00:00:12.140 -af afade=t=in:ss=0:d=1,afade=t=out:st='00\:00\:11.140':d=1 6.mp4

    Works without a problem.

    Therefore, the issue is in the -vf reverse and -af reverse.

    The output is

    ffmpeg version N-94543-g8fcc5d963e Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.1.1 (GCC) 20190807
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
    
  libavutil      56. 33.100 / 56. 33.100
    
  libavcodec     58. 55.100 / 58. 55.100
    
  libavformat    58. 30.100 / 58. 30.100
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 58.100 /  7. 58.100
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0000024b71029180] Using non-standard frame rate 59/1
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'H:\DCIM\100GOPRO\GOPR3258.MP4':
    
  Metadata:
    
    major_brand     : mp41
    
    minor_version   : 538120216
    
    compatible_brands: mp41
    
    creation_time   : 2019-08-14T13:50:26.000000Z
    
    firmware        : HD4.02.05.00.00
    
  Duration: 00:17:43.08, start: 0.000000, bitrate: 30127 kb/s
    
    Stream #0:0(eng): Video: h264 (High) (avc1 / 0x31637661), yuvj420p(pc, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 29972 kb/s, 59.94 fps, 59.94 tbr, 60k tbn, 119.88 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro AVC
    
      encoder         : GoPro AVC encoder
    
      timecode        : 14:03:41:09
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro AAC
    
      timecode        : 14:03:41:09
    
    Stream #0:2(eng): Data: none (tmcd / 0x64636D74) (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro TCD
    
      timecode        : 14:03:41:09
    
    Stream #0:3(eng): Data: none (fdsc / 0x63736466), 13 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro SOS
    
Only '-vf reverse' read, ignoring remaining -vf options: Use ',' to separate filters
    
Only '-af afade=t=in:ss=0:d=1,afade=t=out:st='00\:00\:11.140':d=1,areverse' read, ignoring remaining -af options: Use ',' to separate filters
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    
Press [q] to stop, [?] for help
    
[libx264 @ 0000024b7148cc40] using SAR=1/1
    
[libx264 @ 0000024b7148cc40] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 0000024b7148cc40] profile High, level 4.2, 4:2:0, 8-bit
    
[libx264 @ 0000024b7148cc40] 264 - core 158 r2984 3759fcb - H.264/MPEG-4 AVC codec - Copyleft 2003-2019 - 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=12 lookahead_threads=2 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 '6.mp4':
    
  Metadata:
    
    major_brand     : mp41
    
    minor_version   : 538120216
    
    compatible_brands: mp41
    
    firmware        : HD4.02.05.00.00
    
    encoder         : Lavf58.30.100
    
    Stream #0:0(eng): Video: h264 (libx264) (avc1 / 0x31637661), yuvj420p(pc), 1920x1080 [SAR 1:1 DAR 16:9], q=-1--1, 0.02 fps, 15360 tbn, 60 tbc (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro AVC
    
      timecode        : 14:03:41:09
    
      encoder         : Lavc58.55.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/0 buffer size: 0 vbv_delay: 18446744073709551615
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      creation_time   : 2019-08-14T13:50:26.000000Z
    
      handler_name    :         GoPro AAC
    
      timecode        : 14:03:41:09
    
      encoder         : Lavc58.55.100 aac
    
frame=    0 fps=0.0 q=0.0 Lsize=       1kB time=00:00:00.00 bitrate=N/A speed=   0x
    
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
[aac @ 0000024b71498b40] Qavg: nan

    What I find interesting is

    Only '-vf reverse' read, ignoring remaining -vf options: Use ',' to separate filters

    As there is only -vf reverse

    Only '-af afade=t=in:ss=0:d=1,afade=t=out:st='00\:00\:11.140':d=1,areverse' read, ignoring remaining -af options: Use ',' to separate filters

    Here the same.

    I tried

    ffmpeg -y -ss 00:03:52.612 -i "H:\DCIM\100GOPRO\GOPR3258.MP4" -r 60 -t 00:00:12.140 -vf "reverse" -af "afade=t=in:ss=0:d=1,afade=t=out:st='00\:00\:11.140':d=1,areverse" 6.mp4

    to no avail

    What is causing this issue ?

  • ffmpeg error : could not get mpeg2 profile and level av_interleaved_write_frame() : Operation not permitted

    24 septembre 2019, par A Person

    Getting a weird error
    could not get mpeg2 profile and level av_interleaved_write_frame() : Operation not permitted
    and i do not understand how to fix it

    ffmpeg -i video.mpeg -i audio.wav -c copy -map 0:0 -map 1:0 out.mxf

    ffmpeg version N-94821-g976617c7d2 Copyright (c) 2000-2019 the FFmpeg developers
    
  built with gcc 9.1.1 (GCC) 20190807
    
  configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libdav1d --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt --enable-amf
    
  libavutil      56. 35.100 / 56. 35.100
    
  libavcodec     58. 56.101 / 58. 56.101
    
  libavformat    58. 32.104 / 58. 32.104
    
  libavdevice    58.  9.100 / 58.  9.100
    
  libavfilter     7. 58.102 /  7. 58.102
    
  libswscale      5.  6.100 /  5.  6.100
    
  libswresample   3.  6.100 /  3.  6.100
    
  libpostproc    55.  6.100 / 55.  6.100
    
Input #0, mpegvideo, from 'video.mpeg':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: mpeg2video (High), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 1200k tbn, 50 tbc
    
Guessed Channel Layout for Input Stream #1.0 : stereo
    
Input #1, wav, from 'audio.wav':
    
  Duration: 00:07:36.16, bitrate: 1536 kb/s
    
    Stream #1:0: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
    
Output #0, mxf, to 'out.mxf':
    
  Metadata:
    
    encoder         : Lavf58.32.104
    
    Stream #0:0: Video: mpeg2video (High), yuv420p(tv, top first), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 25 tbr, 25 tbn, 25 tbc
    
    Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, stereo, s16, 1536 kb/s
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #1:0 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[mxf @ 000001b5e48f9680] could not get mpeg2 profile and level
    
av_interleaved_write_frame(): Operation not permitted

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