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  • Demande de création d’un canal

    12 mars 2010, par

    En fonction de la configuration de la plateforme, l’utilisateur peu avoir à sa disposition deux méthodes différentes de demande de création de canal. La première est au moment de son inscription, la seconde, après son inscription en remplissant un formulaire de demande.
    Les deux manières demandent les mêmes choses fonctionnent à peu près de la même manière, le futur utilisateur doit remplir une série de champ de formulaire permettant tout d’abord aux administrateurs d’avoir des informations quant à (...)

  • Gestion de la ferme

    2 mars 2010, par

    La ferme est gérée dans son ensemble par des "super admins".
    Certains réglages peuvent être fais afin de réguler les besoins des différents canaux.
    Dans un premier temps il utilise le plugin "Gestion de mutualisation"

  • MediaSPIP Core : La Configuration

    9 novembre 2010, par

    MediaSPIP Core fournit par défaut trois pages différentes de configuration (ces pages utilisent le plugin de configuration CFG pour fonctionner) : une page spécifique à la configuration générale du squelettes ; une page spécifique à la configuration de la page d’accueil du site ; une page spécifique à la configuration des secteurs ;
    Il fournit également une page supplémentaire qui n’apparait que lorsque certains plugins sont activés permettant de contrôler l’affichage et les fonctionnalités spécifiques (...)

Sur d’autres sites (4594)

  • FFMpeg and WebM/VP8

    25 novembre 2011, par Anand Suresh

    I am trying to use ffmpeg and ffserver to stream VP8 video.

    I am using the following command to start FFMpeg :

    ffmpeg -v 9 -loglevel 99 -f x11grab -s 1440x900 -r2 -i :0.0 -f webm http://localhost:8090/feed1.ffm

    The above command abruptly terminates generating the following error :

    > FFmpeg version 0.6.2-4:0.6.2-1ubuntu1.1, Copyright (c) 2000-2010 the Libav developers
    
  built on Sep 16 2011 16:57:46 with gcc 4.5.2
    
  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static
    
  WARNING: library configuration mismatch
    
  libavutil   configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavcodec  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavformat configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavdevice configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavfilter configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libswscale  configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libpostproc configuration: --extra-version=4:0.6.2-1ubuntu1.1 --prefix=/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libdc1394 --shlibdir=/usr/lib/i686/cmov --cpu=i686 --enable-shared --disable-static --disable-ffmpeg --disable-ffplay
    
  libavutil     50.15. 1 / 50.15. 1
    
  libavcodec    52.72. 2 / 52.72. 2
    
  libavformat   52.64. 2 / 52.64. 2
    
  libavdevice   52. 2. 0 / 52. 2. 0
    
  libavfilter    1.19. 0 /  1.19. 0
    
  libswscale     0.11. 0 /  0.11. 0
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
[x11grab @ 0x9869420]device: :0.0 -> display: :0.0 x: 0 y: 0 width: 1440 height: 900
    
[x11grab @ 0x9869420]shared memory extension  found
    
[x11grab @ 0x9869420]Probe buffer size limit 5000000 reached
    
[x11grab @ 0x9869420]Estimating duration from bitrate, this may be inaccurate
    
Input #0, x11grab, from ':0.0':
    
  Duration: N/A, start: 1322253753.374957, bitrate: 41472 kb/s
    
    Stream #0.0, 1, 1/1000000: Video: rawvideo, bgra, 1440x900, 1/1, 41472 kb/s, 1 tbr, 1000k tbn, 1 tbc
    
[libvpx @ 0x9876540]v0.9.6
    
[libvpx @ 0x9876540]--enable-pic --enable-shared --disable-install-bins --disable-install-srcs --target=x86-linux-gcc
    
[libvpx @ 0x9876540]vpx_codec_enc_cfg
    
[libvpx @ 0x9876540]generic settings
    
  g_usage:                      0
    
  g_threads:                    0
    
  g_profile:                    0
    
  g_w:                          320
    
  g_h:                          240
    
  g_timebase:                   {1/30}
    
  g_error_resilient:            0
    
  g_pass:                       0
    
  g_lag_in_frames:              0
    
[libvpx @ 0x9876540]rate control settings
    
  rc_dropframe_thresh:          0
    
  rc_resize_allowed:            0
    
  rc_resize_up_thresh:          60
    
  rc_resize_down_thresh:        30
    
  rc_end_usage:                 0
    
  rc_twopass_stats_in:          (nil)(0)
    
  rc_target_bitrate:            256
    
[libvpx @ 0x9876540]quantizer settings
    
  rc_min_quantizer:             4
    
  rc_max_quantizer:             63
    
[libvpx @ 0x9876540]bitrate tolerance
    
  rc_undershoot_pct:            95
    
  rc_overshoot_pct:             200
    
[libvpx @ 0x9876540]decoder buffer model
    
  rc_buf_sz:                    6000
    
  rc_buf_initial_sz:            4000
    
  rc_buf_optimal_sz:            5000
    
[libvpx @ 0x9876540]2 pass rate control settings
    
  rc_2pass_vbr_bias_pct:        50
    
  rc_2pass_vbr_minsection_pct:  0
    
  rc_2pass_vbr_maxsection_pct:  400
    
[libvpx @ 0x9876540]keyframing settings
    
  kf_mode:                      1
    
  kf_min_dist:                  0
    
  kf_max_dist:                  9999
    
[libvpx @ 0x9876540]
    
[libvpx @ 0x9876540]vpx_codec_enc_cfg
    
[libvpx @ 0x9876540]generic settings
    
  g_usage:                      0
    
  g_threads:                    1
    
  g_profile:                    0
    
  g_w:                          1440
    
  g_h:                          900
    
  g_timebase:                   {1/1}
    
  g_error_resilient:            0
    
  g_pass:                       0
    
  g_lag_in_frames:              0
    
[libvpx @ 0x9876540]rate control settings
    
  rc_dropframe_thresh:          0
    
  rc_resize_allowed:            0
    
  rc_resize_up_thresh:          60
    
  rc_resize_down_thresh:        30
    
  rc_end_usage:                 0
    
  rc_twopass_stats_in:          (nil)(0)
    
  rc_target_bitrate:            200
    
[libvpx @ 0x9876540]quantizer settings
    
  rc_min_quantizer:             1
    
  rc_max_quantizer:             38
    
[libvpx @ 0x9876540]bitrate tolerance
    
  rc_undershoot_pct:            95
    
  rc_overshoot_pct:             200
    
[libvpx @ 0x9876540]decoder buffer model
    
  rc_buf_sz:                    6000
    
  rc_buf_initial_sz:            4000
    
  rc_buf_optimal_sz:            5000
    
[libvpx @ 0x9876540]2 pass rate control settings
    
  rc_2pass_vbr_bias_pct:        50
    
  rc_2pass_vbr_minsection_pct:  0
    
  rc_2pass_vbr_maxsection_pct:  400
    
[libvpx @ 0x9876540]keyframing settings
    
  kf_mode:                      1
    
  kf_min_dist:                  0
    
  kf_max_dist:                  12
    
[libvpx @ 0x9876540]
    
[libvpx @ 0x9876540]vpx_codec_control
    
[libvpx @ 0x9876540]  VP8E_SET_CPUUSED:             3
    
[libvpx @ 0x9876540]  VP8E_SET_NOISE_SENSITIVITY:   0
    
Output #0, webm, to 'http://127.0.0.1:8090/feed1.ffm':
    
  Metadata:
    
    encoder         : Lavf52.64.2
    
    Stream #0.0, 0, 1/1000: Video: libvpx, yuv420p, 1440x900, 1/1, q=2-31, 200 kb/s, 1k tbn, 1 tbc
    
Stream mapping:
    
  Stream #0.0 -> #0.0
    
Press [q] to stop encoding
    
[webm @ 0x98753b0]Writing block at offset 15, size 158658, pts 0, dts 0, duration 1000, flags 128
    
[webm @ 0x98753b0]Starting new cluster at offset 158681 bytes, pts 0

    Can anyone point out what I am doing wrong here ? Why does ffmpeg die everytime it starts a new cluster ?

    Thanks

  • How do steps for make FFMPEG

    11 août 2017, par mobina varmazyar

    I do step 1 to step 6. I am sure that I take NDK and ffmepeg source in valid address but when I execute

    ./build_android.sh

    in the terminal the following lines will be shown :

    @mv103 telegram

    Can send for me libraries whose can successfully did step 1 to 6 ?

    /build_android.sh: line 8: --prefix=/root/桌面/rajabi/android-ndk-
    
r12b/sources/ffmpeg-3.3.3/android/arm: No such file or directory
    
./build_android.sh: line 9: --enable-shared: command not found

  • Why does Nvenc Encoder improve decoding speed ?

    22 juillet 2019, par Khoa Tran

    I am trying to improve the speed of decoding h264 video to mp4 video using Ffmpeg in c++. I have found a cli command that can do that but I still do not fully understand the command to reproduce it in c++ so I hope you guys can give me an explanation.

    The command that I found uses h264_nvenc encoder to improve the speed using GPU. However, I cannot understand why an h264 encoder would improve the speed of decoding h264 video (or maybe encoding to mp4 frame). Can anyone please give me a detailed explanation ?

    Here is the cli command that I found :

    ffmpeg -hwaccel cuvid -r 120 -i  -c:v h264_nvenc -preset fast -b:v 8M -vf scale=960:1080 -pix_fmt yuv420p  -y

    Thanks

    Edited :
    Log of command with option "-c:v h264_nvenc"

    C:\Users\Shared\GolfTec\test>ffmpeg.exe -hwaccel cuvid -r 120 -i C:\\Users\\Shared\\GolfTec\\test\\raw0.h264 -c:v h264_nvenc -preset medium -b:v 8M -vf scale=960:1080 -pix_fmt yuv420p C:\\Users\\Shared\\GolfTec\\test\\video0.mp4 -y
    
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 7.2.0 (GCC)
    
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray 
    
--enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy 
    
--enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 
    
--enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis 
    
--enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc 
    
--enable-dxva2 --enable-avisynth --enable-libmfx
    
  libavutil      55. 78.100 / 55. 78.100
    
  libavcodec     57.107.100 / 57.107.100
    
  libavformat    57. 83.100 / 57. 83.100
    
  libavdevice    57. 10.100 / 57. 10.100
    
  libavfilter     6.107.100 /  6.107.100
    
  libswscale      4.  8.100 /  4.  8.100
    
  libswresample   2.  9.100 /  2.  9.100
    
  libpostproc    54.  7.100 / 54.  7.100
    
[h264 @ 0000027ecb2a6700] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, h264, from 'C:\\Users\\Shared\\GolfTec\\test\\raw0.h264':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: h264 (CAVLC 4:4:4), yuv444p(progressive), 960x1080, 25 fps, 25 tbr, 1200k tbn, 50 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (h264_nvenc))
    
Press [q] to stop, [?] for help
    
Output #0, mp4, to 'C:\\Users\\Shared\\GolfTec\\test\\video0.mp4':
    
  Metadata:
    
    encoder         : Lavf57.83.100
    
    Stream #0:0: Video: h264 (h264_nvenc) (Main) (avc1 / 0x31637661), yuv420p, 960x1080, q=-1--1, 8000 kb/s, 120 fps, 15360 tbn, 120 tbc
    
    Metadata:
    
      encoder         : Lavc57.107.100 h264_nvenc
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/8000000 buffer size: 16000000 vbv_delay: -1
    
frame=  269 fps=261 q=25.0 Lsize=    2551kB time=00:00:02.23 bitrate=9356.5kbits/s speed=2.17x
    
video:2549kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.074325%

    Log of command without option "-c:v h264_nvenc"

    C:\Users\Shared\GolfTec\test>ffmpeg.exe -hwaccel cuvid -r 120 -i C:\\Users\\Shared\\GolfTec\\test\\raw0.h264 -preset medium -b:v 8M -vf scale=960:1080 -pix_fmt yuv420p C:\\Users\\Shared\\GolfTec\\test\\video0.mp4 -y
    
ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
    
  built with gcc 7.2.0 (GCC)
    
  configuration: --disable-static --enable-shared --enable-gpl --enable-version3 --enable-sdl2 --enable-bzlib --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-cuda --enable-cuvid --enable-d3d11va --enable-nvenc --enable-dxva2 --enable-avisynth --enable-libmfx
    
  libavutil      55. 78.100 / 55. 78.100
    
  libavcodec     57.107.100 / 57.107.100
    
  libavformat    57. 83.100 / 57. 83.100
    
  libavdevice    57. 10.100 / 57. 10.100
    
  libavfilter     6.107.100 /  6.107.100
    
  libswscale      4.  8.100 /  4.  8.100
    
  libswresample   2.  9.100 /  2.  9.100
    
  libpostproc    54.  7.100 / 54.  7.100
    
[h264 @ 0000021e33556640] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
Input #0, h264, from 'C:\\Users\\Shared\\GolfTec\\test\\raw0.h264':
    
  Duration: N/A, bitrate: N/A
    
    Stream #0:0: Video: h264 (CAVLC 4:4:4), yuv444p(progressive), 960x1080, 25 fps, 25 tbr, 1200k tbn, 50 tbc
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> h264 (libx264))
    
Press [q] to stop, [?] for help
    
[libx264 @ 0000021e335589a0] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 BMI2 AVX2
    
[libx264 @ 0000021e335589a0] profile High, level 4.2
    
[libx264 @ 0000021e335589a0] 264 - core 152 r2851 ba24899 - H.264/MPEG-4 AVC codec - Copyleft 2003-2017 - 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=6 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=abr mbtree=1 bitrate=8000 ratetol=1.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
    
Output #0, mp4, to 'C:\\Users\\Shared\\GolfTec\\test\\video0.mp4':
    
  Metadata:
    
    encoder         : Lavf57.83.100
    
    Stream #0:0: Video: h264 (libx264) (avc1 / 0x31637661), yuv420p, 960x1080, q=-1--1, 8000 kb/s, 120 fps, 15360 tbn, 120 tbc
    
    Metadata:
    
      encoder         : Lavc57.107.100 libx264
    
    Side data:
    
      cpb: bitrate max/min/avg: 0/0/8000000 buffer size: 0 vbv_delay: -1
    
frame=  269 fps= 39 q=-1.0 Lsize=    2279kB time=00:00:02.21 bitrate=8423.8kbits/s speed=0.32x
    
video:2277kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.119200%
    
[libx264 @ 0000021e335589a0] frame I:2     Avg QP:25.09  size: 16508
    
[libx264 @ 0000021e335589a0] frame P:193   Avg QP:23.94  size:  9094
    
[libx264 @ 0000021e335589a0] frame B:74    Avg QP:23.92  size:  7332
    
[libx264 @ 0000021e335589a0] consecutive B-frames: 62.8%  1.5%  0.0% 35.7%
    
[libx264 @ 0000021e335589a0] mb I  I16..4: 38.2% 54.3%  7.6%
    
[libx264 @ 0000021e335589a0] mb P  I16..4:  9.2% 11.8%  0.8%  P16..4: 46.5%  3.4%  3.8%  0.0%  0.0%    skip:24.5%
    
[libx264 @ 0000021e335589a0] mb B  I16..4:  4.3%  3.7%  0.2%  B16..8: 35.0%  1.5%  0.2%  direct: 9.5%  skip:45.5%  L0:56.6% L1:40.9% BI: 2.5%
    
[libx264 @ 0000021e335589a0] final ratefactor: 19.31
    
[libx264 @ 0000021e335589a0] 8x8 transform intra:53.1% inter:88.1%
    
[libx264 @ 0000021e335589a0] coded y,uvDC,uvAC intra: 22.0% 41.2% 4.5% inter: 12.8% 39.4% 0.0%
    
[libx264 @ 0000021e335589a0] i16 v,h,dc,p: 18% 32% 19% 31%
    
[libx264 @ 0000021e335589a0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 14% 17% 54%  2%  3%  3%  4%  1%  2%
    
[libx264 @ 0000021e335589a0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 11%  9% 63%  3%  4%  3%  3%  2%  2%
    
[libx264 @ 0000021e335589a0] i8c dc,h,v,p: 63% 23% 13%  1%
    
[libx264 @ 0000021e335589a0] Weighted P-Frames: Y:86.0% UV:64.8%
    
[libx264 @ 0000021e335589a0] ref P L0: 53.6%  8.3% 17.1% 11.4%  9.6%
    
[libx264 @ 0000021e335589a0] ref B L0: 58.9% 14.4% 26.6%
    
[libx264 @ 0000021e335589a0] ref B L1: 84.8% 15.2%
    
[libx264 @ 0000021e335589a0] kb/s:8317.64

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