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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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.
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    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (12421)

  • avutil/mathematics : speed up av_gcd by using Stein’s binary GCD algorithm

    11 octobre 2015, par Ganesh Ajjanagadde
    avutil/mathematics : speed up av_gcd by using Stein’s binary GCD algorithm

    This uses Stein’s binary GCD algorithm :
    
https://en.wikipedia.org/wiki/Binary_GCD_algorithm
    
to get a roughly 4x speedup over Euclidean GCD on standard architectures
    
with a compiler intrinsic for ctzll, and a roughly 2x speedup otherwise.
    
At the moment, the compiler intrinsic is used on GCC and Clang due to
    
its easy availability.
    

    Quick note regarding overflow : yes, subtractions on int64_t can, but the
    
llabs takes care of that. The llabs is also guaranteed to be safe, with
    
no annoying INT64_MIN business since INT64_MIN being a power of 2, is
    
shifted down before being sent to llabs.
    

    The binary GCD needs ff_ctzll, an extension of ff_ctz for long long (int64_t). On
    
GCC, this is provided by a built-in. On Microsoft, there is a
    
BitScanForward64 analog of BitScanForward that should work ; but I can’t confirm.
    
Apparently it is not available on 32 bit builds ; so this may or may not
    
work correctly. On Intel, per the documentation there is only an
    
intrinsic for _bit_scan_forward and people have posted on forums
    
regarding _bit_scan_forward64, but often their documentation is
    
woeful. Again, I don’t have it, so I can’t test.
    

    As such, to be safe, for now only the GCC/Clang intrinsic is added, the rest
    
use a compiled version based on the De-Bruijn method of Leiserson et al :
    
http://supertech.csail.mit.edu/papers/debruijn.pdf.
    

    Tested with FATE, sample benchmark (x86-64, GCC 5.2.0, Haswell)
    
with a START_TIMER and STOP_TIMER in libavutil/rationsl.c, followed by a
    
make fate.
    

    aac-am00_88.err :
    
builtin :
    
714 decicycles in av_gcd,    4095 runs,      1 skips
    

    de-bruijn :
    
1440 decicycles in av_gcd,    4096 runs,      0 skips
    

    previous :
    
2889 decicycles in av_gcd,    4096 runs,      0 skips
    

    Signed-off-by : Ganesh Ajjanagadde <gajjanagadde@gmail.com>
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavutil/intmath.h
    • [DH] libavutil/mathematics.c

  • Evolution #3751 : Ajouter le support du SNI au proxy connect

    24 août 2017, par - Equipement

    Je viens d’effectuer un test (en PHP 5.6) avec la version SPIP SVN du 24/08/2017. Lorsque je clique sur le bouton "Essayer le proxy", il n’y a plus de message d’erreur.
    Merci d’avoir résolu ce problème.

  • avconv on debian jessie throws error when trying to convert raw video to mp4

    20 août 2017, par Vinay Divakar

    I am trying to convert a raw video captured using a Logitech USB Cam(YUYV) to mp4 using avconv. I have tried the below to do so :

    avconv -i out.raw -c copy output.mp4
    
avconv -i out.raw -vcodec copy -acodec copy output.mp4

    but I get an error as shown below.

    root@beaglebone:~/BBB_CV/boneCV# avconv -i out.raw -c copy output.mp4
    
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav developersbuilt on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
    
out.raw: Invalid data found when processing input

    I have checked here, but did not find any relevant examples for the above purpose.

    Edit : Added more details—

    I tried doing the below by adding the infile options as suggested :

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4

    This got me rid of the previous error and some new ones popped up as shown below.

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt yuyv422 -f rawvideo -i out.raw -c copy output.mp4
    
avconv version 11.9-6:11.9-1~deb8u1, Copyright (c) 2000-2017 the Libav 
    
developers built on Apr 23 2017 23:00:54 with gcc 4.9.2 (Debian 4.9.2-10)
    
[rawvideo @ 0x17e21c0] Estimating duration from bitrate, this may be inaccurate
    
Input #0, rawvideo, from 'out.raw':
    
Duration: N/A, start: 0.000000, bitrate: N/A
    
Stream #0.0: Video: rawvideo, yuyv422, 640x480, 30 tbn
    
[mp4 @ 0x17eb840] Codec for stream 0 does not use global headers but 
    
container format requires global headers
    
[mp4 @ 0x17eb840] track 0: could not find tag, codec not currently 
    
supported in container
    
Output #0, mp4, to 'output.mp4':
    
Metadata:
    
encoder         : Lavf56.1.0
    
Stream #0.0: Video: rawvideo, yuyv422, 640x480, q=2-31, 30 tbn, 30 tbc
    
Stream mapping:
    
Stream #0:0 -> #0:0 (copy)
    
Could not write header for output file #0 (incorrect codec parameters ?): 
    
Operation not permitted

    The output.mp4 is being generated but when tried to open it throws an error.

    Edit : I ran a "sudo apt-get install libav-tools" an then tried. This is what I got.

    root@beaglebone:~/BBB_CV/boneCV# avconv -s 640x480 -framerate 30 -pix_fmt 
    
yuyv422 -f rawvideo -i out.raw -c copy output.mp4
    
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
    
built with gcc 4.9.2 (Debian 4.9.2-10)
    
configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-
    
 strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' 
    
   -cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-
    
    nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-
    
    libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-
    
    libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-
    
    libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-
    
    libvpx --enable-libschroedinger --disable-encoder=libschroedinger --
    
    enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter -
    
    enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-
    
   libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf -
    
   -disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-
    
   frei0r --enable-openssl --enable-libass --enable-libopus --enable-
    
   fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --
    
   disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample 
    
   --disable-htmlpages --disable-podpages --enable-libutvideo --enable-
    
   libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --
    
   disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
    
   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
    
  [rawvideo @ 0x18465e0] Estimating duration from bitrate, this may be 
    
   inaccurate
    
   Input #0, rawvideo, from 'out.raw':
    
   Duration: 00:00:00.10, start: 0.000000, bitrate: 146626 kb/s
    
   Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, 147456 
    
   kb/s, 30 tbr, 30 tbn, 30 tbc
    
   [mp4 @ 0x184f790] Could not find tag for codec rawvideo in stream #0, 
    
   codec not currently supported in container
    
   Output #0, mp4, to 'output.mp4':
    
   Metadata:
    
   encoder         : Lavf56.25.101
    
   Stream #0:0: Video: rawvideo (YUY2 / 0x32595559), yuyv422, 640x480, q=2-
    
   31, 147456 kb/s, 30 tbr, 30 tbn, 30 tbc
    
   Stream mapping:
    
   Stream #0:0 -> #0:0 (copy)
    
   Could not write header for output file #0 (incorrect codec parameters ?): 
    
   Invalid argument

    I ran "ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4" and below is what I got.

    root@beaglebone:~/BBB_CV/boneCV# ffmpeg -s 640x480 -framerate 30 -pix_fmt yuv420p -f rawvideo -i out.raw output.mp4
    
ffmpeg version 2.6.9 Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 4.9.2 (Debian 4.9.2-10)
    
  configuration: --prefix=/usr --extra-cflags='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security ' --extra-ldflags='-Wl,-z,relro' --cc='ccache cc' --enable-shared --enable-libmp3lame --enable-gpl --enable-nonfree --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-x11grab --enable-libgsm --enable-libtheora --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-libspeex --enable-nonfree --disable-stripping --enable-libvpx --enable-libschroedinger --disable-encoder=libschroedinger --enable-version3 --enable-libopenjpeg --enable-librtmp --enable-avfilter --enable-libfreetype --enable-libvo-aacenc --disable-decoder=amrnb --enable-libvo-amrwbenc --enable-libaacplus --libdir=/usr/lib/arm-linux-gnueabihf --disable-vda --enable-libbluray --enable-libcdio --enable-gnutls --enable-frei0r --enable-openssl --enable-libass --enable-libopus --enable-fontconfig --enable-libpulse --disable-mips32r2 --disable-mipsdspr1 --disable-mipsdspr2 --enable-libvidstab --enable-libzvbi --enable-avresample --disable-htmlpages --disable-podpages --enable-libutvideo --enable-libfdk-aac --enable-libx265 --enable-libiec61883 --enable-libdc1394 --disable-altivec --shlibdir=/usr/lib/arm-linux-gnueabihf
    
  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
    
[rawvideo @ 0x1d55e0] Estimating duration from bitrate, this may be inaccurate
    
Input #0, rawvideo, from 'out.raw':
    
  Duration: 00:00:00.13, start: 0.000000, bitrate: 109969 kb/s
    
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 640x480, 110592 kb/s, 30 tbr, 30 tbn, 30 tbc
    
[libx264 @ 0x1df6c0] using cpu capabilities: ARMv6 NEON
    
[libx264 @ 0x1df6c0] profile High, level 3.0
    
[libx264 @ 0x1df6c0] 264 - core 146 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - 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=25 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 'output.mp4':
    
  Metadata:
    
    encoder         : Lavf56.25.101
    
    Stream #0:0: Video: h264 (libx264) ([33][0][0][0] / 0x0021), yuv420p, 640x480, q=-1--1, 30 fps, 15360 tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc56.26.100 libx264
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[rawvideo @ 0x1de3a0] Invalid buffer size, packet size 450428 &lt; expected frame_size 460800
    
Error while decoding stream #0:0: Invalid argument
    
frame=    3 fps=1.7 q=29.0 Lsize=     263kB time=00:00:00.03 bitrate=64692.6kbits/s    
    
video:262kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.318205%
    
[libx264 @ 0x1df6c0] frame I:1     Avg QP:33.09  size:100676
    
[libx264 @ 0x1df6c0] frame P:2     Avg QP:32.99  size: 83672
    
[libx264 @ 0x1df6c0] mb I  I16..4:  0.0% 95.4%  4.6%
    
[libx264 @ 0x1df6c0] mb P  I16..4:  0.0% 45.7%  3.0%  P16..4: 35.9% 10.7%  4.8%  0.0%  0.0%    skip: 0.0%
    
[libx264 @ 0x1df6c0] 8x8 transform intra:94.6% inter:86.1%
    
[libx264 @ 0x1df6c0] coded y,uvDC,uvAC intra: 100.0% 100.0% 100.0% inter: 53.6% 100.0% 100.0%
    
[libx264 @ 0x1df6c0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 56% 12% 24%  2%  0%  1%  1%  2%  3%
    
[libx264 @ 0x1df6c0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 82% 11%  4%  0%  0%  0%  1%  0%  1%
    
[libx264 @ 0x1df6c0] i8c dc,h,v,p: 48% 30% 14%  7%
    
[libx264 @ 0x1df6c0] Weighted P-Frames: Y:0.0% UV:0.0%
    
[libx264 @ 0x1df6c0] ref P L0: 83.5%  7.9%  8.6%
    
[libx264 @ 0x1df6c0] kb/s:21441.60

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