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  • 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 (...)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

Sur d’autres sites (8700)

  • Decoding WMA with FFMPeg on iPhone

    3 novembre 2012, par Winston

    I'm using this function to decode audio, but there is no sound :

    int decodedBytes;
    
decodedBytes = avcodec_decode_audio4(myData->pCodecCtx, myData->myFrame, &data_size, &myData->pkt);

    The data is successfully downloaded, but I don't know where to go from here, since there is no sound at all.

  • WMAV2 and FFMPEG on iPhone

    14 avril 2012, par user1333656

    Recently, I try to decode audio files on iPhone by using ffmpeg.
    Most audio formats are decoded properly but WMAV2 isn't.
    The decoded file(raw data) can be imported to sound editor like AUDACITY and it is playable but not clear and different with the original track.
    Is this related to ARM floating point ???

    Someone said VBR WMAV2 could cause this kind of prob.
    Can any body give me any clue for this prob ??

    • IOS 5.1
    • XCODE 4.3.1
    • OSX 10.7.3
    • ffmpeg 0.10.1

    configure options

         ./configure \
    —extra-ldflags=-L/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhon    eOS5.1.sdk/usr/lib/system \
    —disable-doc \
    —disable-ffserver \
    —enable-cross-compile \
    —arch=arm \
    —cpu=cortex-a8 \
    —target-os=darwin \
    —enable-neon \
    —cc=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc  \
    —as='gas-preprocessor.pl /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/usr/bin/gcc'  \
    —sysroot=/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs/iPhoneOS5.1.sdk \
    —extra-cflags='-arch armv7 -mfpu=neon' \
    —extra-ldflags='-arch armv7 -mfpu=neon' \
    —enable-pic

  • ffmpeg link errors when building on iPhone 4.3 SDK

    12 septembre 2011, par YuzaKen

    After a rather trying few days, I finally got ffmpeg to compile under Xcode 4 with SDK 4.3. The issue no is a series (39) link errors. They fall into at least two cases : assembly language routines and static arrays defined in header files. My believe is that it is generating C method names for the assembly routines while the .c files containing the reference to the routine is generating a different method name (munging).

    Undefined symbols for architecture armv7 :

      "_ff_vector_fmul_vfp", referenced from:
    
      _ff_dsputil_init_vfp in libavcodec.a(dsputil_init_vfp.o)
    
  "_main", referenced from:
    
      start in crt1.3.1.o
    
  "_av_solve_lls", referenced from:
    
      _ff_lpc_calc_coefs in libavcodec.a(lpc.o)
    
  "_ff_inv_aanscales", referenced from:
    
      _dct_quantize_trellis_c in libavcodec.a(mpegvideo_enc.o)
    
      _decode_frame in libavcodec.a(eamad.o)
    
      _tgq_decode_frame in libavcodec.a(eatgq.o)
    
      _tqi_decode_frame in libavcodec.a(eatqi.o)
    
  "_ff_add_pixels_clamped_armv6", referenced from:
    
      _ff_dsputil_init_armv6 in libavcodec.a(dsputil_init_armv6.o)
    
  "_ff_cga_palette", referenced from:
    
      _tmv_decode_frame in libavcodec.a(tmv.o)
    
  "_ff_svq1_inter_multistage_vlc", referenced from:
    
      _encode_block in libavcodec.a(svq1enc.o)
    
      _svq1_decode_init in libavcodec.a(svq1dec.o)
    
  "_ff_simple_idct_armv6", referenced from:
    
      _ff_dsputil_init_armv6 in libavcodec.a(dsputil_init_armv6.o)
    
  "_BZ2_bzDecompressInit", referenced from:
    
      _matroska_decode_buffer in libavformat.a(matroskadec.o)
    
  "_ff_put_pixels8_y2_arm", referenced from:
    
      _ff_put_pixels16_y2_arm in libavcodec.a(dsputil_init_arm.o)
    
      _dsputil_init_arm in libavcodec.a(dsputil_init_arm.o)
    
  "_ff_simple_idct_add_armv6", referenced from:

    ...and so on.

    Anyone with experience with ffmpeg on iPhone ? Successfully ?

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