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Médias (1)

Mot : - Tags -/pirate bay

Autres articles (57)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

Sur d’autres sites (6474)

  • Add support for new VUI parameters

    8 juin 2016, par Anton Mitrofanov
    Add support for new VUI parameters

    Support the new color primaries, transfer characteristics, and matrix
    
coefficients defined in the 2016-02 edition of the H.264 specification.
    • [DH] encoder/set.c
    • [DH] x264.c
    • [DH] x264.h

  • opencv cannot read MP4 file from sony camcorder

    7 juin 2016, par Jundong

    The sony camcorder recorded video in MP4 format. I am reading the file by

    import cv2
    
vid = cv2.VideoCapture('sample.MP4')

    my OpenCV version is 2.4.8, as a Python module.

    The codec of the ’sample.MP4’ is H.264, Linear PCM.

    ffprobe sample.MP4

    returns :

    > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C0004.mp4':   Metadata:
    
>     major_brand     : XAVC
    
>     minor_version   : 16785407
    
>     compatible_brands: XAVCmp42iso2
    
>     creation_time   : 2016-06-06 13:41:51   Duration: 00:00:15.02, start: 0.000000, bitrate: 50439 kb/s
    
>     Stream #0:0(und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709/bt709/iec61966-2-4), 1920x1080 [SAR 1:1 DAR 16:9],
    
> 48655 kb/s, 29.97 fps, 29.97 tbr, 30k tbn, 59.94 tbc (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Video Media Handler
    
>       encoder         : AVC Coding
    
>     Stream #0:1(und): Audio: pcm_s16be (twos / 0x736F7774), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Sound Media Handler
    
>     Stream #0:2(und): Data: none (rtmd / 0x646D7472), 245 kb/s (default)
    
>     Metadata:
    
>       creation_time   : 2016-06-06 13:41:51
    
>       handler_name    : Timed Metadata Media Handler 
    
> Unsupported codec with id 0 for input stream 2

    It seems that the codec for h.264 is missing. The version of my FFmpeg is 3.0.

    I tried avconv -i sample.MP4 -c:a copy -c:v copy sample_converted.mp4 to convert the sample.MP4 to sample_converted.mp4, this command line did not work. The command ffmpeg -i sample.mp4 sample_converted.mp4 worked ; however, it compromised the video quality badly.I used an online video converter : http://www.online-convert.com/ (which output nice quality video in mp4 format, but it has size limitation for free users)
    to convert the MP4 to mp4, the command in Terminal as below :

    ffprobe 'sample_converted.mp4'

    returns

    > Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C0001_converted.mp4':  
    
> Metadata:
    
>     major_brand     : isom
    
>     minor_version   : 512
    
>     compatible_brands: isomiso2avc1mp41
    
>     encoder         : Lavf57.36.100   Duration: 00:00:02.02, start: 0.000000, bitrate: 16777 kb/s
    
>     Stream #0:0(und): Video: h264 (Constrained Baseline) (avc1 / 0x31637661), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], 16801 kb/s, 59.94
    
> fps, 59.94 tbr, 60k tbn, 119.88 tbc (default)
    
>     Metadata:
    
>       handler_name    : VideoHandler
    
>     Stream #0:1(und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 127 kb/s (default)
    
>     Metadata:
    
>       handler_name    : SoundHandler

    Obviously, the encoders, handler_names etc. of the sample.MP4 and sample_converted.mp4 are different. Any idea using FFmpeg or OpenCV to convert this raw video from camcorder to the readable format without compromising the video quality ?

  • ffmpeg concat avi files loosing the audio

    14 juin 2016, par Nir Diamant

    Hey i have 2 AVI files that i want to concatenate them to one output.

    the files path is written in text file (mylist.txt) :

    file1.avi - contain video only.
    file2.avi - contain video and audio.

    i execute the next command :

    ffmpeg -f concat -i C:\ffmpeg\mylist.txt -c copy C:\ffmpeg\output.avi

    mylist.txt=

    file ’C :\motionbee\ffmpeg\bin\file1.avi’

    file ’C :\motionbee\ffmpeg\bin\file2.avi’

    the output file is concatenate of the 2 files. but the sound from file2.avi is not there.

    so how can i contact them without delete the sound ???

    console log :

    C:\motionbee\ffmpeg\bin>ffmpeg -f concat -i C:\motionbee\ffmpeg\bin\mylist.txt -
    
c copy C:\motionbee\ffmpeg\bin\output.avi
    
ffmpeg version N-78949-g6f5048f Copyright (c) 2000-2016 the FFmpeg developers
    
  built with gcc 5.3.0 (GCC)
    
  configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
    
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
    
le-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --
    
enable-libdcadec --enable-libfreetype --enable-libgme --enable-libgsm --enable-l
    
ibilbc --enable-libmodplug --enable-libmfx --enable-libmp3lame --enable-libopenc
    
ore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --ena
    
ble-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable
    
-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-amrwbenc --ena
    
ble-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx
    
264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-libzimg --enable
    
-lzma --enable-decklink --enable-zlib
    
  libavutil      55. 19.100 / 55. 19.100
    
  libavcodec     57. 27.101 / 57. 27.101
    
  libavformat    57. 28.100 / 57. 28.100
    
  libavdevice    57.  0.101 / 57.  0.101
    
  libavfilter     6. 39.100 /  6. 39.100
    
  libswscale      4.  0.100 /  4.  0.100
    
  libswresample   2.  0.101 /  2.  0.101
    
  libpostproc    54.  0.100 / 54.  0.100
    
Input #0, concat, from 'C:\motionbee\ffmpeg\bin\mylist.txt':
    
  Duration: N/A, start: 0.000000, bitrate: 523 kb/s
    
    Stream #0:0: Video: mpeg4 (Simple Profile) (FMP4 / 0x34504D46), yuv420p, 720
    
x480 [SAR 32:27 DAR 16:9], 523 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 30k tbc
    
File 'C:\motionbee\ffmpeg\bin\output.avi' already exists. Overwrite ? [y/N] y
    
Output #0, avi, to 'C:\motionbee\ffmpeg\bin\output.avi':
    
  Metadata:
    
    ISFT            : Lavf57.28.100
    
    Stream #0:0: Video: mpeg4 (FMP4 / 0x34504D46), yuv420p, 720x480 [SAR 32:27 D
    
AR 16:9], q=2-31, 523 kb/s, 29.97 fps, 29.97 tbr, 29.97 tbn, 29.97 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
Press [q] to stop, [?] for help
    
[concat @ 0000000000452620] New audio stream 0:1 at pos:10038 and DTS:100.104s
    
frame= 6000 fps=0.0 q=-1.0 Lsize=   13020kB time=00:03:20.23 bitrate= 532.7kbits
    
/s speed=1.39e+003x
    
video:12870kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing
    
 overhead: 1.159987%

    thanks.

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