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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

  • (Dés)Activation de fonctionnalités (plugins)

    18 février 2011, par

    Pour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
    SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
    Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
    MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...)

Sur d’autres sites (8005)

  • ffmpeg can't stream to remote client

    4 septembre 2014, par KFL

    I’m building a simple ffmpeg command line on my laptop to stream from its camera. The command line reads (verbose output at the botton) :

    host1> ffmpeg -v verbose \
    
              -f dshow \
    
              -i video="Camera":audio="Microphone" \
    
              -r 30 -g 0 -vcodec h264 -acodec libmp3lame \
    
              -tune zerolatency \
    
              -preset ultrafast \
    
              -f mpegts udp://12.34.56.78:12345

    Firstly, it works locally. I.e., I can view the output by using ffplay on the same host :

    host1> ffplay -hide_banner -v udp://12.34.56.78:12345

    Now what is NOT working is when I do this from another machine in the same network. It shows a nan progress :

    host2> ffplay -hide_banner -v udp://12.34.56.78:12345
    
    nan    :  0.000 fd=   0 aq=    0KB vq=    0KB sq=    0B f=0/0  

    I used ncat to dump the raw content. But there’s no output :

    host2>\ncat\ncat -v -u 12.34.56.78 12345
    
Ncat: Version 5.59BETA1 ( http://nmap.org/ncat )
    
Ncat: Connected to 12.34.56.78:12345.
    
(...and nothing happen...)

    Note that I can exclude firewall issues as I used ncat to communicate with each other across the wire using the same port and protocol (UDP). This works and they can chat to each other :

    host1> ncat -l -u -p 12345
    
host2> ncat -u 12.34.56.78 12345

    Any hint ?

    I’m using Windows x64 with FFMPEG 64bit installed from here. Below is the Output of my ffmpeg command :

    C:\ffmpeg\bin>ffmpeg -v verbose -f dshow -i video="Integrated Camera":audio="Microphone (Realtek High Definition Audio)" -r 30 -g 0 -vcodec h264 -acodec libmp3lame -tune zerolatency -preset ultrafast -f mpegts udp://12.34.56.78:12345
    
ffmpeg version N-66012-g97b8809 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Sep  1 2014 00:21:15 with gcc 4.8.3 (GCC)
    
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --disable-w32threads --enable-avisynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libfreetype --enable-libgme --enable-libgsm --enable-libilbc --enable-libmodplug -enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libspeex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aacenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxavs --enable-libxvid --enable-decklink --enable-zlib
    
  libavutil      54.  7.100 / 54.  7.100
    
  libavcodec     56.  1.100 / 56.  1.100
    
  libavformat    56.  3.100 / 56.  3.100
    
  libavdevice    56.  0.100 / 56.  0.100
    
  libavfilter     5.  0.103 /  5.  0.103
    
  libswscale      3.  0.100 /  3.  0.100
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  0.100 / 53.  0.100
    
Guessed Channel Layout for  Input Stream #0.1 : stereo
    
Input #0, dshow, from 'video=Integrated Camera:audio=Microphone (Realtek High Definition Audio)':
    
  Duration: N/A, start: 171840.657000, bitrate: N/A
    
    Stream #0:0: Video: rawvideo, bgr24, 640x480, 30 fps, 30 tbr, 10000k tbn, 30 tbc
    
    Stream #0:1: Audio: pcm_s16le, 44100 Hz, 2 channels, s16, 1411 kb/s
    
Matched encoder 'libx264' for codec 'h264'.
    
[graph 0 input from stream 0:0 @ 0000000000470aa0] w:640 h:480 pixfmt:bgr24 tb:1/10000000 fr:10000000/333333 sar:0/1 sws_param:flags=2
    
[auto-inserted scaler 0 @ 0000000004326d00] w:iw h:ih flags:'0x4' interl:0
    
[format @ 0000000004325a00] auto-inserting filter 'auto-inserted scaler 0' between the filter 'Parsed_null_0' and the filter 'format'
    
[auto-inserted scaler 0 @ 0000000004326d00] w:640 h:480 fmt:bgr24 sar:0/1 -> w:640 h:480 fmt:yuv444p sar:0/1 flags:0x4
    
No pixel format specified, yuv444p for H.264 encoding chosen.
    
Use -pix_fmt yuv420p for compatibility with outdated media players.
    
[graph 1 input from stream 0:1 @ 0000000000460c20] tb:1/44100 samplefmt:s16 samplerate:44100 chlayout:0x3
    
[audio format for output stream 0:1 @ 00000000004601a0] auto-inserting filter 'auto-inserted resampler 0' between the filter 'Parsed_anull_0' and the filter 'audio format for output stream 0:1'
    
[auto-inserted resampler 0 @ 00000000004604a0] ch:2 chl:stereo fmt:s16 r:44100Hz -> ch:2 chl:stereo fmt:s16p r:44100Hz
    
[libx264 @ 000000000081bb20] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX
    
[libx264 @ 000000000081bb20] profile High 4:4:4 Intra, level 3.0, 4:4:4 8-bit
    
[mpegts @ 000000000081abe0] muxrate VBR, pcr every 3 pkts, sdt every 200, pat/pmt every 40 pkts
    
Output #0, mpegts, to 'udp://12.34.56.78:12345':
    
  Metadata:
    
    encoder         : Lavf56.3.100
    
    Stream #0:0: Video: h264 (libx264), yuv444p, 640x480, q=-1--1, 30 fps, 90k tbn, 30 tbc
    
    Metadata:
    
      encoder         : Lavc56.1.100 libx264
    
    Stream #0:1: Audio: mp3 (libmp3lame), 44100 Hz, stereo, s16p
    
    Metadata:
    
      encoder         : Lavc56.1.100 libmp3lame
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
    
  Stream #0:1 -> #0:1 (pcm_s16le (native) -> mp3 (libmp3lame))
    
Press [q] to stop, [?] for help
    
*** 1 dup!
    
frame=  241 fps= 31 q=28.0 Lsize=    3439kB time=00:00:08.03 bitrate=3506.4kbits/s dup=1 drop=0
    
video:3035kB audio:125kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 8.791966%
    
Input file #0 (video=Integrated Camera:audio=Microphone (Realtek High Definition Audio)):
    
  Input stream #0:0 (video): 240 packets read (221184000 bytes); 240 frames decoded;
    
  Input stream #0:1 (audio): 16 packets read (1411200 bytes); 16 frames decoded (352800 samples);
    
  Total: 256 packets (222595200 bytes) demuxed
    
Output file #0 (udp://12.34.56.78:12345):
    
  Output stream #0:0 (video): 241 frames encoded; 241 packets muxed (3108187 bytes);
    
  Output stream #0:1 (audio): 306 frames encoded (352512 samples); 307 packets muxed (128313 bytes);
    
  Total: 548 packets (3236500 bytes) muxed
    
[libx264 @ 000000000081bb20] frame I:241   Avg QP:27.97  size: 12897
    
[libx264 @ 000000000081bb20] mb I  I16..4: 100.0%  0.0%  0.0%
    
[libx264 @ 000000000081bb20] coded y,u,v intra: 26.3% 0.5% 0.0%
    
[libx264 @ 000000000081bb20] i16 v,h,dc,p: 19% 28% 21% 31%
    
[libx264 @ 000000000081bb20] kb/s:3095.29
    
[dshow @ 0000000000467720] real-time buffer[Integrated Camera] too full (90% of size: 3041280)! frame dropped!
    
Received signal 2: terminating. (I pressed CTRL-C)

  • Reduce size of APK when including .so files

    13 septembre 2014, par Arslan

    I am using a 3rd party API for camera library that is using ffmpeg frame recorder and .so files along with javacv.

    I am also using a 3rd party library for extracting meta data out from a video which also has some .so files

    When i merged all these files into only one folder "armeabi" my application did not work.
    So I have to copy all these files to all other folders "armeabi-v7a, mips, x86". Which works perfectly fine but obviously the size of the apk is now too large.

    Total size of these file are 20MB per folder. That make 80MB for all folder. My .apk size is 41MB. Please suggest ma what I can do to remove duplicate files/folders or reduce .apk size.

    Why I need all these folders armeabi, armeabi-v7a, mips, x86
    enter image description here

    .so files in folder
    enter image description here

  • Revision bb260d9076 : Rework partition search skip scheme This commit enables the encoder to skip spl

    3 octobre 2014, par Jingning Han

    Changed Paths :
     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_rdopt.c


     Modify /vp9/encoder/vp9_speed_features.c


     Modify /vp9/encoder/vp9_tokenize.c


     Modify /vp9/encoder/vp9_tokenize.h



    Rework partition search skip scheme

    This commit enables the encoder to skip split partition search if
    the bigger block size has all non-zero quantized coefficients in low
    frequency area and the total rate cost is below a certain threshold.
    It logarithmatically scales the rate threshold according to the
    current block size. For speed 3, the compression performance loss :
    derf -0.093%
    stdhd -0.066%

    Local experiments show 4% - 20% encoding speed-up for speed 3.
    blue_sky_1080p, 1500 kbps
    51051 b/f, 35.891 dB, 67236 ms ->
    50554 b/f, 35.857 dB, 59270 ms (12% speed-up)

    old_town_cross_720p, 1500 kbps
    14431 b/f, 36.249 dB, 57687 ms ->
    14108 b/f, 36.172 dB, 46586 ms (19% speed-up)

    pedestrian_area_1080p, 1500 kbps
    50812 b/f, 40.124 dB, 100439 ms ->
    50755 b/f, 40.118 dB, 96549 ms (4% speed-up)

    mobile_calendar_720p, 1000 kbps
    10352 b/f, 35.055 dB, 51837 ms ->
    10172 b/f, 35.003 dB, 44076 ms (15% speed-up)

    Change-Id : I412e34db49060775b3b89ba1738522317c3239c8

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