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    Une file d’attente stockée dans la base de donnée
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    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
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    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.
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Sur d’autres sites (7096)

  • Applying fades between images ffmpeg command

    29 octobre 2015, par Jon Stevens

    I am trying to create a video slideshow that fade out/in between each image solely from an ffmpeg cli command. After researching this for hours, the only way I discovered that this was possible was to use the -filter_complex argument and pass in all images and specify a complex filter that defines multiple fades out and back in that I could time to happen between frames. The command I have so far :

    ffmpeg -y -framerate 1/5 \
    
-loop 1 -i img-1.jpg \
    
-loop 1 -i img-2.jpg \
    
-loop 1 -i img-3.jpg \
    
-filter_complex \
    
"[1:v]fade=out:4:d=1,fade=in:5:d=1[fad1]; \
    
[2:v]fade=out:9:d=1,fade=in:10:d=1[fad2]; \
    
[3:v]fade=out:14:d=1,fade=in:15:d=1[fad3];" \
    
-c:v libx264 -r 25 -pix_fmt yuv420p test.mp4

    Here’s the output from executing this command :

     ffmpeg version 2.6.4 Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 5.1.1 (GCC) 20150618 (Red Hat 5.1.1-4)
    
  configuration: --prefix=/usr --bindir=/usr/bin --datadir=/usr/share/ffmpeg --incdir=/usr/include/ffmpeg --libdir=/usr/lib64 --mandir=/usr/share/man --arch=x86_64 --optflags='-O2 -g -pipe -Wall -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector-strong --param=ssp-buffer-size=4 -grecord-gcc-switches -m64 -mtune=generic' --enable-bzlib --disable-crystalhd --enable-frei0r --enable-gnutls --enable-ladspa --enable-libass --enable-libcdio --enable-libdc1394 --disable-indev=jack --enable-libfreetype --enable-libgsm --enable-libmp3lame --enable-openal --enable-libopencv --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libvorbis --enable-libv4l2 --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-x11grab --enable-avfilter --enable-avresample --enable-postproc --enable-pthreads --disable-static --enable-shared --enable-gpl --disable-debug --disable-stripping --shlibdir=/usr/lib64 --enable-runtime-cpudetect
    
  libavutil      54. 20.100 / 54. 20.100
    
  libavcodec     56. 26.100 / 56. 26.100
    
  libavformat    56. 25.101 / 56. 25.101
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 11.102 /  5. 11.102
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, image2, from img-1.jpg':
    
  Duration: 00:00:05.00, start: 0.000000, bitrate: 141 kb/s
    
    Stream #0:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 72:72 DAR 16:9], 0.20 fps, 0.20 tbr, 0.20 tbn, 0.20 tbc
    
Input #1, image2, from img-2.jpg':
    
  Duration: 00:00:00.04, start: 0.000000, bitrate: 17789 kb/s
    
    Stream #1:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 67:67 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
Input #2, image2, from 'img-3.jpg':
    
  Duration: 00:00:00.04, start: 0.000000, bitrate: 17764 kb/s
    
    Stream #2:0: Video: mjpeg, yuvj420p(pc, bt470bg/unknown/unknown), 1280x720 [SAR 62:62 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
    
[AVFilterGraph @ 0xbc2a00] No such filter: ''
    
Error configuring filters.

    All I am trying to do is create a video slideshow with fades/transitions between images. Any help is greatly appreciated !

  • Unable to playback .mp4 audio file in Firefox, works in Chrome

    22 octobre 2015, par SpartanVXL

    I have been trying to play a file through Firefox to see if it is compatible for a website and cannot figure out why it cannot play whereas it will play on Chrome okay. It simply shows a error box that the "video cannot be played because the file is corrupt". I’ve trawled through information on .mp4 files and Firefox’s supported codec types but have not found much aside from recent posts on how FF should be able to play this content in 2015. Here is a ffprobe of the file.

    Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'two.mp4':
    Metadata:
       major_brand     : mp42
       minor_version   : 0
       compatible_brands: M4A mp42isom
       creation_time   : 2015-08-06 08:17:05
       encoder         : Nero AAC codec / 1.5.4.0
       Duration        : 00:03:28.77, start: 0.000000, bitrate: 131 kb/s
       Chapter #0:0    : start 0.027333, end 208.768000
       Metadata:
         title           :
       Stream #0:0(und): Audio: aac (LC) (mp4a / 0x6134706D), 96000 Hz, stereo, flt p, 128 kb/s (default)

    Any reason why this local file wouldn’t play through FF on Windows 41.0.2 ?

  • ffmpeg creating mp4 vs mp4

    23 octobre 2015, par user1207446

    I have two mp4 files. One of them was given to me and plays well under mediawiki (using the MediawikiPlayer extension). The other I created from a WMV file and it does not play. When I look at the two files through the eyes of ffprobe, they appear to be very different. The working file returns this :

    Metadata:
    
  major_brand     : mp42
    
  minor_version   : 0
    
  compatible_brands: mp42isomavc1
    
  creation_time   : 2013-12-28 20:25:51
    
  encoder         : HandBrake 0.9.9 2013052900
    
Duration: 00:00:17.05, start: 0.000000, bitrate: 957 kb/s
    
  Chapter #0:0: start -0.066733, end 17.017000
    
  Metadata:
    
    title           : Chapter 1
    
  Stream #0:0(und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, smpte170m/smpte170m/bt709), 704x480 [SAR 10:11 DAR 4:3], 824 kb/s, 29.97 fps, 29.97 tbr, 90k tbn, 180k tbc (default)
    
  Metadata:
    
    creation_time   : 2013-12-28 20:25:51
    
    encoder         : JVT/AVC Coding
    
  Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
  Metadata:
    
    creation_time   : 2013-12-28 20:25:51
    
  Stream #0:2(und): Subtitle: mov_text (text / 0x74786574), 0 kb/s
    
  Metadata:
    
    creation_time   : 2013-12-28 20:25:51

    The non-working produces this :

    Metadata:
    
  major_brand     : isom
    
  minor_version   : 512
    
  compatible_brands: isomiso2mp41
    
  encoder         : Lavf55.0.100
    
Duration: 00:05:25.79, start: 0.033333, bitrate: 1331 kb/s
    
  Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 704x528 [SAR 1:1 DAR 4:3], 1198 kb/s, 25 fps, 25 tbr, 12800 tbn, 25 tbc (default)
    
  Metadata:
    
    handler_name    : VideoHandler
    
  Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
  Metadata:
    
    handler_name    : SoundHandler

    What ffmpeg options do I need to supply to convert my wmv file to an mp4 file like the first of those listed here (the working one) ?

    Update : 2015-10-23, here is the full output from ffmpeg for the non-working file :

    E:\>ffmpeg -i non-working.mp4
    
ffmpeg version N-71329-g235589e Copyright (c) 2000-2015 the FFmpeg developers
    
  built with gcc 4.9.2 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libblu
    
ray --enable-libbs2b --enable-libcaca --enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --enable-libopencore-amrnb --enab
    
le-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --ena
    
ble-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-lzma --ena
    
ble-decklink --enable-zlib
    
  libavutil      54. 22.101 / 54. 22.101
    
  libavcodec     56. 34.100 / 56. 34.100
    
  libavformat    56. 30.100 / 56. 30.100
    
  libavdevice    56.  4.100 / 56.  4.100
    
  libavfilter     5. 13.101 /  5. 13.101
    
  libswscale      3.  1.101 /  3.  1.101
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  3.100 / 53.  3.100
    
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'non-working.mp4':
    
  Metadata:
    
    major_brand     : isom
    
    minor_version   : 512
    
    compatible_brands: isomiso2mp41
    
    encoder         : Lavf55.0.100
    
  Duration: 00:10:12.94, start: 0.033333, bitrate: 1324 kb/s
    
    Stream #0:0(eng): Video: mpeg4 (Simple Profile) (mp4v / 0x7634706D), yuv420p, 704x528 [SAR 1:1 DAR 4:3], 1191 kb/s, 25 fps, 25 tbr, 12800 tbn, 25 tbc (default)
    
    Metadata:
    
      handler_name    : VideoHandler
    
    Stream #0:1(eng): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    
    Metadata:
    
      handler_name    : SoundHandler
    
At least one output file must be specified

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