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Autres articles (31)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • 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 (...)

Sur d’autres sites (3783)

  • Encoding for HTTP Live Streaming with Xuggle

    26 mai 2012, par Luuk D. Jansen

    I have created a server system based on Xuggle to encode an incoming file to H264 and segment it. However, when playing the video back in Quicktime it almost works (with a small hiccup in the audio sometimes) but when changing fro one quality stream to another the image gets lost.

    So I ran the 'mediastreamvalidator'and got the following error :

    ERROR : (-1) Unknown video codec : 1836069494 (program 0, track 0)
    ERROR : (-1) failed to parse segment as either an MPEG-2 TS or an ES

    So I used FFMPEG to get some info on the codex :
    The result of my Xuggler encoding :

    Input #0, mpegts, from 'segment_0.ts':
    
  Duration: 00:00:09.40, start: 0.000000, bitrate: 3618 kb/s
    
  Program 1 
    
    Metadata:
    
      service_name    : Service01
    
      service_provider: FFmpeg
    
    Stream #0.0[0x100]: Video: mpeg2video (Main), yuv420p, 960x540 [PAR 1:1 DAR 16:9], 104857 kb/s, 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0.1[0x101]: Audio: mp2, 48000 Hz, stereo, s16, 128 kb/s

    The result of a file created by Compressor :

    Seems stream 0 codec frame rate differs from container frame rate: 180000.00 (180000/1) -> 25.00 (25/1)
    
Input #0, mpegts, from 'fileSequence1.ts':
    
  Duration: 00:00:09.97, start: 19.984578, bitrate: 5308 kb/s
    
  Program 1 
    
    Stream #0.0[0x101]: Video: h264 (Main), yuv420p, 960x540, 25 tbr, 90k tbn, 180k tbc
    
    Stream #0.1[0x102]: Audio: aac, 22050 Hz, stereo, s16, 32 kb/s

    The main difference seems to me that for the Xuggler encoded file it says Video : mpeg2video instead of h264. However, while encoding I did specifically set the Coder to ICodec.ID.CODEC_ID_H264.

    How can I force it to use h264. The same with audio. I specified AAC and get MP2.

    I subsequent used FFMPEG directly and that results in :

    Input #0, mpegts, from 'encoded.ts':
    
  Duration: 00:00:24.16, start: 1.400000, bitrate: 360 kb/s
    
  Program 1 
    
    Metadata:
    
      service_name    : Service01
    
      service_provider: FFmpeg
    
    Stream #0.0[0x100]: Video: h264 (Main), yuv420p, 1920x1080 [PAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
    
    Stream #0.1[0x101](eng): Audio: aac, 48000 Hz, stereo, s16, 57 kb/s

    That looks better. I could use FFMPEG directly, but by using Xuggler I can segment the file while easier keep track of progress of the process.

  • Anomalie #2531 : Error 500

    12 juin 2012, par jluc -

    C’est signalé de nouveau sur le descriptif d’un article cette fois http://core.spip.org/issues/2750

  • Got error (input/output error) during tcp opening, FFMPEG

    1er juin 2012, par manutd

    I got error during tcp opening.
    Exactly to say, avformat_open_input always return -5 (input/output error).
    I looked into the source of the error code using gdb and found that getaddrinfo(in libavformat/tcp.c) function didn't work well as expected and returned the error value EIO.
    ffmpeg source have ff_getaddrinfo(in libavformat/os_support.c) function that is linked to getaddrinfo but when I run the program and my program encountered getaddrinfo, my program called other function in libc.so, dynamic library. I couldn't find which function is called.
    I gave the valid url to ffmpeg. The valid url is "http://stream.radiojavan.com/radiojavan".

    I compiled ffmpeg source for Android-use and used ffmpeg version 0.8.1
    This is my configuration.

    ./configure --target-os=linux \
    
    --prefix=$PREFIX \
    
    --enable-cross-compile \
    
    --extra-libs="-lgcc" \
    
    --arch=arm \
    
    --cc=$PREBUILT/bin/arm-linux-androideabi-gcc \
    
    --cross-prefix=$PREBUILT/bin/arm-linux-androideabi- \
    
    --nm=$PREBUILT/bin/arm-linux-androideabi-nm \
    
    --sysroot=$PLATFORM \
    
    --extra-cflags=" -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums  -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
    
    --disable-shared \
    
    --enable-static \
    
    --extra-ldflags="-Wl,-rpath-link=$PLATFORM/usr/lib -L$PLATFORM/usr/lib -nostdlib -lc -lm -ldl -llog" \
    
    --disable-ffplay \
    
    --enable-zlib \

    Any advise would be appreciated.

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