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Autres articles (86)

  • 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 (...)

  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

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Sur d’autres sites (14762)

  • avcodec/dv_profile : deprecate internal function that shouldn’t be public

    19 septembre 2014, par James Almer
    avcodec/dv_profile : deprecate internal function that shouldn’t be public

    Reviewed-by : Michael Niedermayer <michaelni@gmx.at>
    
Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] doc/APIchanges
    • [DH] libavcodec/dv_profile.c
    • [DH] libavcodec/dv_profile.h
    • [DH] libavcodec/dv_profile_internal.h
    • [DH] libavcodec/dvdec.c
    • [DH] libavcodec/version.h

  • Is it possible to force ffmpeg to use hardware decoding with H.264 input stream ?

    27 août 2018, par Ryan Griggs

    I am running a raspberry pi 3B with ffmpeg compiled with the —enable-omx-rpi option. I am trying to do frame-capture from a webcam stream (h.264, 1920x1080) to JPG files at 5 frames per second. This operation currently causes the board to show very high CPU utilization and get very hot. For this reason, I am assuming hardware decoder is not being utilized.

    Is there a way to 1) determine whether ffmpeg is using hardware decoding, and 2) force it to be enabled ?

    EDIT : here’s the log :

    ffmpeg -probesize 4096 -analyzeduration 10000 -threads 1 -i rtsp://192.168.1.88:554/11 -vf fps=fps=5 -y test%03d.png
    
ffmpeg version 3.2.10-1~deb9u1+rpt1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1) 20170516
    
  configuration: --prefix=/usr --extra-version='1~deb9u1+rpt1' --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx-rpi --enable-mmal --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
[rtsp @ 0x1d9b630] Stream #0: not enough frames to estimate rate; consider increasing probesize
    
[rtsp @ 0x1d9b630] decoding for stream 0 failed
    
Guessed Channel Layout for Input Stream #0.1 : mono
    
Input #0, rtsp, from 'rtsp://192.168.1.88:554/11':
    
  Metadata:
    
    title           : 10
    
  Duration: N/A, bitrate: 64 kb/s
    
    Stream #0:0: Video: h264 (Main), yuv420p(progressive), 1920x1080, 90k tbr, 90k tbn, 180k tbc
    
    Stream #0:1: Audio: pcm_alaw, 8000 Hz, mono, s16, 64 kb/s
    
[swscaler @ 0x1e50a80] No accelerated colorspace conversion found from yuv420p to rgb24.
    
Output #0, image2, to 'test%03d.png':
    
  Metadata:
    
    title           : 10
    
    encoder         : Lavf57.56.101
    
    Stream #0:0: Video: png, rgb24, 1920x1080, q=2-31, 200 kb/s, 5 fps, 5 tbn, 5 tbc
    
    Metadata:
    
      encoder         : Lavc57.64.101 png
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (h264 (native) -> png (native))
    
Press [q] to stop, [?] for help
    
[rtsp @ 0x1d9b630] max delay reached. need to consume packetN/A speed=   0x
    
[rtsp @ 0x1d9b630] RTP: missed 13 packets
    
[h264 @ 0x1dfb650] error while decoding MB 24 3, bytestream -5
    
[h264 @ 0x1dfb650] concealing 7825 DC, 7825 AC, 7825 MV errors in P frame
    
[rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 88 packets
    
[h264 @ 0x1dfb650] error while decoding MB 38 41, bytestream -11
    
[h264 @ 0x1dfb650] concealing 3251 DC, 3251 AC, 3251 MV errors in P frame
    
frame=    4 fps=2.2 q=-0.0 size=N/A time=00:00:00.20 bitrate=N/A speed=0.111x   [h264 @ 0x1dfb650] Increasing reorder buffer to 1
    
frame=    4 fps=0.8 q=-0.0 size=N/A time=00:00:00.20 bitrate=N/A speed=0.0413x  [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 30 packets
    
[h264 @ 0x1dfb650] error while decoding MB 37 5, bytestream -9
    
[h264 @ 0x1dfb650] concealing 7572 DC, 7572 AC, 7572 MV errors in P frame
    
frame=    5 fps=0.9 q=-0.0 size=N/A time=00:00:00.40 bitrate=N/A speed=0.069x   [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 34 packets
    
[h264 @ 0x1dfb650] error while decoding MB 98 4, bytestream -9
    
[h264 @ 0x1dfb650] concealing 7631 DC, 7631 AC, 7631 MV errors in P frame
    
frame=    6 fps=0.9 q=-0.0 size=N/A time=00:00:00.60 bitrate=N/A speed=0.0894x  [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 30 packets
    
[h264 @ 0x1dfb650] error while decoding MB 20 10, bytestream -9
    
[h264 @ 0x1dfb650] concealing 6989 DC, 6989 AC, 6989 MV errors in P frame
    
frame=    6 fps=0.8 q=-0.0 size=N/A time=00:00:00.60 bitrate=N/A speed=0.0808x  [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 3357 packets
    
[rtsp @ 0x1d9b630] RTP: PT=60: bad cseq 0fed expected=02d0
    
[rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 3358 packets
    
[h264 @ 0x1dfb650] concealing 3400 DC, 3400 AC, 3400 MV errors in P frame
    
frame=    8 fps=1.0 q=-0.0 size=N/A time=00:00:01.00 bitrate=N/A speed=0.124x   [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 5 packets
    
[h264 @ 0x1dfb650] error while decoding MB 33 42, bytestream -5
    
[h264 @ 0x1dfb650] concealing 3136 DC, 3136 AC, 3136 MV errors in P frame
    
frame=    8 fps=0.9 q=-0.0 size=N/A time=00:00:01.00 bitrate=N/A speed=0.117x   frame=   41 fps=0.9 q=-0.0 size=N/A time=00:00:07.40 bitrate=N/A speed=0.156x   [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 6 packets
    
[h264 @ 0x1dfb650] error while decoding MB 72 17, bytestream -5
    
[h264 @ 0x1dfb650] concealing 6097 DC, 6097 AC, 6097 MV errors in P frame
    
frame=   42 fps=0.9 q=-0.0 size=N/A time=00:00:07.60 bitrate=N/A speed=0.155x   frame=   44 fps=0.9 q=-0.0 size=N/A time=00:00:08.00 bitrate=N/A speed=0.162x   [rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 19325 packets
    
[rtsp @ 0x1d9b630] RTP: PT=60: bad cseq 5c13 expected=1096
    
[rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 19326 packets
    
[h264 @ 0x1dfb650] cabac decode of qscale diff failed at 5 15
    
[h264 @ 0x1dfb650] error while decoding MB 5 15, bytestream 14471
    
[h264 @ 0x1dfb650] concealing 6404 DC, 6404 AC, 6404 MV errors in P frame
    
[rtsp @ 0x1d9b630] max delay reached. need to consume packet
    
[rtsp @ 0x1d9b630] RTP: missed 32 packets
    
[h264 @ 0x1dfb650] error while decoding MB 40 13, bytestream -11
    
[h264 @ 0x1dfb650] concealing 6609 DC, 6609 AC, 6609 MV errors in P frame
    
frame=   44 fps=0.9 q=-0.0 size=N/A time=00:00:08.00 bitrate=N/A speed=0.159x  

    Here’s the output of ffmpeg -decoders | grep -i h264 :

     ffmpeg -decoders | grep -i h264
    
ffmpeg version 3.2.10-1~deb9u1+rpt1 Copyright (c) 2000-2018 the FFmpeg developers
    
  built with gcc 6.3.0 (Raspbian 6.3.0-18+rpi1) 20170516
    
  configuration: --prefix=/usr --extra-version='1~deb9u1+rpt1' --toolchain=hardened --libdir=/usr/lib/arm-linux-gnueabihf --incdir=/usr/include/arm-linux-gnueabihf --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libebur128 --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx-rpi --enable-mmal --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
    
  libavutil      55. 34.101 / 55. 34.101
    
  libavcodec     57. 64.101 / 57. 64.101
    
  libavformat    57. 56.101 / 57. 56.101
    
  libavdevice    57.  1.100 / 57.  1.100
    
  libavfilter     6. 65.100 /  6. 65.100
    
  libavresample   3.  1.  0 /  3.  1.  0
    
  libswscale      4.  2.100 /  4.  2.100
    
  libswresample   2.  3.100 /  2.  3.100
    
  libpostproc    54.  1.100 / 54.  1.100
    
 VFS..D h264                 H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10
    
 V..... h264_mmal            h264 (mmal) (codec h264)
    
 V....D h264_vdpau           H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 (VDPAU acceleration) (codec h264)

  • ffmpeg converting PCM data file to wav file getting distorted(noisy) data

    3 janvier 2015, par Mahendra

    I have raw pcm data in following form :

    0000 0000 0000 0000 0000 0000 0000 0000
    
0000 0000 0000 0000 0000 0000 0000 0000
    
0000 0000 0000 0000 0000 0000 0000 0000
    
0000 0000 0000 0000 0000 0000 0000 0100
    
0000 0000 0000 0000 0000 0000 0000 0000
    
0000 0100 0100 0000 0000 efbf bdef bfbd
    
0000 efbf bdef bfbd efbf bdef bfbd efbf
    
bdef bfbd efbf bdef bfbd efbf bdef bfbd
    
efbf bdef bfbd efbf bdef bfbd 0000 efbf
    
bdef bfbd 0000 efbf bdef bfbd efbf bdef
    
bfbd 2900 efbf bdef bfbd 0000 efbf bdef
    
bfbd efbf bdef bfbd efbf bdef bfbd 0000

    and I want to make this data in wav file when I am converting by ffmpeg getting noisy data by this command :

    sox -V -t raw -b 16 -e signed -r 16000 -c 1 14_32_7_187.pcm  new.wav

    and :

    ffmpeg -f s16le -ar 16000 -ac 1 -i 14_32_7_187.pcm -ar 16000 -ac 1 oout.wav

    using both getting noisy data.

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