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    Puis-je poster des contenus à partir d’une tablette Ipad ?
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  • Librairies et binaires spécifiques au traitement vidéo et sonore

    31 janvier 2010, par

    Les logiciels et librairies suivantes sont utilisées par SPIPmotion d’une manière ou d’une autre.
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    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.
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  • convert h.264 avi container to mp4 with ffmpeg

    31 août 2014, par Tom

    I’d like to convert my h.264 avi container to a mp4 container with ffmpeg. I’ve found this works :

    ./ffmpeg -i myfile.avi -vcodec copy myfile.mp4
    ffmpeg version N-51169-gcedf276 Copyright (c) 2000-2013 the FFmpeg developers
     built on Mar 21 2013 05:12:00 with gcc 4.6 (Debian 4.6.3-1)
     configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
     libavutil      52. 22.100 / 52. 22.100
     libavcodec     55.  1.100 / 55.  1.100
     libavformat    55.  0.100 / 55.  0.100
     libavdevice    55.  0.100 / 55.  0.100
     libavfilter     3. 48.100 /  3. 48.100
     libswscale      2.  2.100 /  2.  2.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  2.100 / 52.  2.100
    [avi @ 0x9fff660] non-interleaved AVI
    Guessed Channel Layout for  Input Stream #0.1 : mono
    Input #0, avi, from 'myfile.avi':
     Metadata:
       encoder         : Lavf52.64.2
     Duration: 00:00:10.40, start: 0.000000, bitrate: 409 kb/s
       Stream #0:0: Video: h264 (Baseline) (H264 / 0x34363248), yuvj420p, 640x480, 10 fps, 10 tbr, 10 tbn, 30 tbc
       Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 128 kb/s
    Output #0, mp4, to 'myfile.mp4':
     Metadata:
       encoder         : Lavf55.0.100
       Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 640x480, q=2-31, 10 fps, 10240 tbn, 10 tbc
       Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 8000 Hz, mono, s16, 128 kb/s
    Stream mapping:
     Stream #0:0 -> #0:0 (copy)
     Stream #0:1 -> #0:1 (pcm_s16le -> libvo_aacenc)
    Press [q] to stop, [?] for help
    [mp4 @ 0xa006ea0] pts has no value
       Last message repeated 100 times
    frame=  101 fps=0.0 q=-1.0 Lsize=     350kB time=00:00:11.06 bitrate= 259.3kbits/s
    video:332kB audio:15kB subtitle:0 global headers:0kB muxing overhead 0.926809%

    This generates a file that I can play with the HTML5 video player but for legacy browsers I’d like to use a flash player (Flowplayer). The file doesn’t play with Flowplayer, in fact it causes it to crash.

    However if I use :

    ./ffmpeg -i myfile.avi myfile2.mp4
    ffmpeg version N-51169-gcedf276 Copyright (c) 2000-2013 the FFmpeg developers
     built on Mar 21 2013 05:12:00 with gcc 4.6 (Debian 4.6.3-1)
     configuration: --prefix=/root/ffmpeg-static/32bit --arch=x86_32 --extra-cflags='-m32 -I/root/ffmpeg-static/32bit/include -static' --extra-ldflags='-m32 -L/root/ffmpeg-static/32bit/lib -static' --extra-libs='-lxml2 -lexpat -lfreetype' --enable-static --disable-shared --disable-ffserver --disable-doc --enable-bzlib --enable-zlib --enable-postproc --enable-runtime-cpudetect --enable-libx264 --enable-gpl --enable-libtheora --enable-libvorbis --enable-libmp3lame --enable-gray --enable-libass --enable-libfreetype --enable-libopenjpeg --enable-libspeex --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-version3 --enable-libvpx
     libavutil      52. 22.100 / 52. 22.100
     libavcodec     55.  1.100 / 55.  1.100
     libavformat    55.  0.100 / 55.  0.100
     libavdevice    55.  0.100 / 55.  0.100
     libavfilter     3. 48.100 /  3. 48.100
     libswscale      2.  2.100 /  2.  2.100
     libswresample   0. 17.102 /  0. 17.102
     libpostproc    52.  2.100 / 52.  2.100
    [avi @ 0x9b02660] non-interleaved AVI
    Guessed Channel Layout for  Input Stream #0.1 : mono
    Input #0, avi, from 'myfile.avi':
     Metadata:
       encoder         : Lavf52.64.2
     Duration: 00:00:10.40, start: 0.000000, bitrate: 409 kb/s
       Stream #0:0: Video: h264 (Baseline) (H264 / 0x34363248), yuvj420p, 640x480, 10 fps, 10 tbr, 10 tbn, 30 tbc
       Stream #0:1: Audio: pcm_s16le ([1][0][0][0] / 0x0001), 8000 Hz, mono, s16, 128 kb/s
    No pixel format specified, yuvj420p for H.264 encoding chosen.
    Use -pix_fmt yuv420p for compatibility with outdated media players.
    [libx264 @ 0x9b065a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.1 Cache64
    [libx264 @ 0x9b065a0] profile High, level 2.2
    [libx264 @ 0x9b065a0] 264 - core 129 r2230 1cffe9f - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - 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=1 lookahead_threads=1 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=10 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 'myfile2.mp4':
     Metadata:
       encoder         : Lavf55.0.100
       Stream #0:0: Video: h264 ([33][0][0][0] / 0x0021), yuvj420p, 640x480, q=-1--1, 10240 tbn, 10 tbc
       Stream #0:1: Audio: aac ([64][0][0][0] / 0x0040), 8000 Hz, mono, s16, 128 kb/s
    Stream mapping:
     Stream #0:0 -> #0:0 (h264 -> libx264)
     Stream #0:1 -> #0:1 (pcm_s16le -> libvo_aacenc)
    Press [q] to stop, [?] for help
    frame=   47 fps=0.0 q=25.0 size=      21kB time=00:00:04.40 bitrate=  39.9kbits/s dup=3 dropframe=   59 fps= 56 q=25.0 size=      56kB time=00:00:05.68 bitrate=  80.2kbits/s dup=3 dropframe=   71 fps= 45 q=25.0 size=      89kB time=00:00:06.84 bitrate= 106.9kbits/s dup=3 dropframe=   83 fps= 40 q=25.0 size=     124kB time=00:00:08.12 bitrate= 124.9kbits/s dup=3 dropframe=   94 fps= 36 q=25.0 size=     157kB time=00:00:09.14 bitrate= 140.4kbits/s dup=4 dropframe=  105 fps= 23 q=25.0 Lsize=     309kB time=00:00:11.06 bitrate= 228.8kbits/s dup=4 drop=0
    video:291kB audio:15kB subtitle:0 global headers:0kB muxing overhead 1.108651%
    [libx264 @ 0x9b065a0] frame I:1     Avg QP:17.65  size: 12772
    [libx264 @ 0x9b065a0] frame P:94    Avg QP:19.46  size:  2868
    [libx264 @ 0x9b065a0] frame B:10    Avg QP:21.58  size:  1464
    [libx264 @ 0x9b065a0] consecutive B-frames: 82.9% 13.3%  0.0%  3.8%
    [libx264 @ 0x9b065a0] mb I  I16..4: 16.6% 66.3% 17.1%
    [libx264 @ 0x9b065a0] mb P  I16..4:  4.2%  6.3%  0.5%  P16..4: 27.0%  9.5%  5.1%  0.0%  0.0%    skip:47.4%
    [libx264 @ 0x9b065a0] mb B  I16..4:  0.8%  1.0%  0.0%  B16..8: 39.1%  4.6%  0.5%  direct: 2.4%  skip:51.7%  L0:39.8% L1:56.4% BI: 3.9%
    [libx264 @ 0x9b065a0] 8x8 transform intra:58.0% inter:74.7%
    [libx264 @ 0x9b065a0] coded y,uvDC,uvAC intra: 47.3% 0.0% 0.0% inter: 16.6% 0.0% 0.0%
    [libx264 @ 0x9b065a0] i16 v,h,dc,p: 29% 19% 10% 42%
    [libx264 @ 0x9b065a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 31% 21% 29%  2%  3%  4%  4%  3%  3%
    [libx264 @ 0x9b065a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 39% 28% 18%  2%  3%  3%  3%  2%  2%
    [libx264 @ 0x9b065a0] i8c dc,h,v,p: 100%  0%  0%  0%
    [libx264 @ 0x9b065a0] Weighted P-Frames: Y:5.3% UV:0.0%
    [libx264 @ 0x9b065a0] ref P L0: 67.9% 12.0% 12.6%  6.8%  0.6%
    [libx264 @ 0x9b065a0] ref B L0: 76.9% 23.1%
    [libx264 @ 0x9b065a0] ref B L1: 99.7%  0.3%
    [libx264 @ 0x9b065a0] kb/s:226.31

    This works great. But the timing is quite different not to mention CPU cycles. The first command is measured in milli-secs while the second can take quite some time ( 5-40secs).

    Is there another way I can convert the avi to a mp4 container quickly ? Ideally by re-muxing as opposed to re-encoding.

    EDIT

    I’m using this right now which I find to be the fastest for re-encoding. But again I’d rather not do this. I just want to re-mux the code.

    ffmpeg -loglevel quiet -i myfile.avi -vcodec libx264 -profile:v baseline -preset ultrafast myfile.mp4

  • using ffmpeg to convert gif to mp4 , output doesn't play on android

    3 août 2015, par Mahdi

    I just use the following command to convert a gif file to mp4 but the resulting mp4 file doesn’t play in android default video player .
    what did I wrong ?
    is there any aditional steps should I take to produce android playable mp4 files ?

    $ ffmpeg -f gif -i infile.gif outfile.mp4

    my test gif file : Test Gif File
    My desktop played the output.mp4 very well using VLC Media Player and also MX Player on my android device played the video file without any error.

  • configure : Only redirect strtoll to _strtoi64 if necessary

    25 juillet 2015, par Martin Storsjö
    configure : Only redirect strtoll to _strtoi64 if necessary
    

    This isn’t necessary any longer on MSVC 2013 Update 4.

    Signed-off-by : Martin Storsjö <martin@martin.st>

    • [DH] configure