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  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

Sur d’autres sites (4367)

  • libav ffmpeg - streaming from both a mkv and input stream

    20 janvier 2020, par kealist

    I am trying to use ffmpeg libraries in C# with AutoGen bindings. The overall issue is that I am taking a collection of sources, some streams, and some .mkv containing recordings of a stream. As for now, they are all h264 and only video. For input streams, I am able to adjust the packets and broad cast them and that works fine, but any time I try to call av_interleaved_write_frame with packets from the MKV file, I get the error Error occurred: Invalid data found when processing input.

    Here is the main loop, where the error happens for mkv files. Is there an extra step ?

    /* read all packets */
    while (true)
    {
       if ((ret = ffmpeg.av_read_frame(ifmt_ctx, &packet)) < 0)
       {
           Console.WriteLine("Unable to read packet");
           break;
       }
       stream_index = (uint)packet.stream_index;
       type = ifmt_ctx->streams[packet.stream_index]->codecpar->codec_type;
       Console.WriteLine($"Demuxer gave frame of stream_index %{stream_index}");


       /* remux this frame without reencoding */
       ffmpeg.av_packet_rescale_ts(&packet,
           ifmt_ctx->streams[stream_index]->time_base,
           ofmt_ctx->streams[stream_index]->time_base);

       if (packet.stream_index < 0)
       {
           Console.WriteLine("Packet stream error");
       }



       ret = ffmpeg.av_write_frame(ofmt_ctx, &packet);
       if (ret < 0)
       {
           goto end;
       }
       else
       {
           ffmpeg.av_packet_unref(&packet);
       }
    }

    Anything need to be different for MKV files ?

    I get some contradictory error output where it claims it is annex b but also isn’t :

    [AVBSFContext @ 00000220eb657080] The input looks like it is Annex B already
    Automatically inserted bitstream filter 'h264_mp4toannexb'; args=''
    [mpegts @ 00000220ebace300] H.264 bitstream malformed, no startcode found, use the video bitstream filter 'h264_mp4toannexb' to fix it ('-bsf:v h264_mp4toannexb' option with ffmpeg)

    Verbose output from ffplay from an MKV file :

    ffplay version git-2020-01-13-7225479 Copyright (c) 2003-2020 the FFmpeg developers
     built with gcc 9.2.1 (GCC) 20200111
     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. 38.100 / 56. 38.100
     libavcodec     58. 65.103 / 58. 65.103
     libavformat    58. 35.102 / 58. 35.102
     libavdevice    58.  9.103 / 58.  9.103
     libavfilter     7. 71.100 /  7. 71.100
     libswscale      5.  6.100 /  5.  6.100
     libswresample   3.  6.100 /  3.  6.100
     libpostproc    55.  6.100 / 55.  6.100
    Initialized direct3d renderer.
    [h264 @ 00000165ed18d140] Reinit context to 640x480, pix_fmt: yuv444p
    Input #0, matroska,webm, from '.\webcam_14_Test1.mkv':   0B f=0/0
     Metadata:
       ENCODER         : Lavf58.12.100
     Duration: 00:00:39.30, start: 0.000000, bitrate: 1943 kb/s
       Stream #0:0: Video: h264 (High 4:4:4 Predictive), 1 reference frame, yuv444p(progressive, left), 640x480 [SAR 1:1 DAR 4:3], 1k fps, 30 tbr, 1k tbn, 60 tbc (default)
       Metadata:
         DURATION        : 00:00:39.299000000
    [h264 @ 00000165f424e200] Reinit context to 640x480, pix_fmt: yuv444p
    [ffplay_buffer @ 00000165f52ea840] w:640 h:480 pixfmt:yuv444p tb:1/1000 fr:30/1 sar:1/1
    [auto_scaler_0 @ 00000165ed1d2c80] w:iw h:ih flags:'bicubic' interl:0
    [ffplay_buffersink @ 00000165f424ef00] auto-inserting filter 'auto_scaler_0' between the filter 'ffplay_buffer' and the filter 'ffplay_buffersink'
    [auto_scaler_0 @ 00000165ed1d2c80] w:640 h:480 fmt:yuv444p sar:1/1 -> w:640 h:480 fmt:yuv420p sar:1/1 flags:0x4
    Created 640x480 texture with SDL_PIXELFORMAT_IYUV.
    [AVIOContext @ 00000165ed179a40] Statistics: 9547965 bytes read, 0 seeks
  • avcodec/adpcm : Fix overflow in FFABS() IMA_EA_EACS

    7 décembre 2019, par Michael Niedermayer
    avcodec/adpcm : Fix overflow in FFABS() IMA_EA_EACS
    

    Fixes : negation of -2147483648 cannot be represented in type 'int' ; cast to an unsigned type to negate this value to itself
    Fixes : 19235/clusterfuzz-testcase-minimized-ffmpeg_AV_CODEC_ID_ADPCM_IMA_EA_EACS_fuzzer-5680878952382464

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>

    • [DH] libavcodec/adpcm.c
  • FFMpeg kills itself when restreaming http to rtmp

    22 novembre 2019, par dust19992

    We are trying to restream few stations to our Emby server (alternative to plex), but always when we start the command as provided by many cast-software it runs for some time and then it dies.

    Here is our command :

    ffmpeg -i http://URL/IP:1515/station/discoverychannel/15HD -c:a aac -b:a 96k -ar 44100 -vcodec copy -f flv rtmp://server/discoverystation/15HD

    The error is none the only exit message is :

     Stream #0:0 -> #0:0 (copy)
     Stream #0:1 -> #0:1 (aac (native) -> aac (native))
    Press [q] to stop, [?] for help
    frame=33056 fps= 60 q=-1.0 Lsize=  302387kB time=00:09:11.45 bitrate=4492.0kbits/s speed=1.01x
    video:295223kB audio:6576kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.194924%
    [aac @ 0x55b6a748ee40] Qavg: 583.684
    Exiting normally, received signal 2
    root@simpsons:~#```


    Our server is WOWZA media server, and we have been looking for the problem for some time now, but without any success, so we hope you guys can help us figure it out, we are trying to copy the live video as it is, and we do not want to change the encoding, or anything else, but if necessary then it has to be encoded.

    I have not much experience in ffmpeg but we have been using VMIX that uses ffmpeg and it's running smooth there to the server without dying, so there has to be a way to run that with the ffmpeg standalone.

    Here is the WOWZA restream manual: https://www.wowza.com/docs/how-to-restream-using-ffmpeg-with-wowza-streaming-engine

    Thanks.