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    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 (...)

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    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.
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    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

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

    5 septembre 2013, par

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Sur d’autres sites (11116)

  • AForge.Video.FFMPEG used in C#

    30 décembre 2018, par cuong nguyen

    I use Visual C# 2008 and want to write AVI file from bmp sequences.

    I found AForge.Video.VWF but it’s just for "vmw3" or "DIB " codecs and I want to use AForge.Video.FFMPEG but it got error.

    For example I just code :

    using System;
    using System.Collections.Generic;

    using System.Linq;
    using System.Text;
    using AForge.Video.FFMPEG;

    namespace ConsoleApplication4
    {
       class Program
       {
           static void Main(string[] args)
           {
               VideoFileWriter vfw = new VideoFileWriter();
           }
       }
    }

    But I got this filenotfoundexception

    {"The specified module could not be found. (Exception from HRESULT: 0x8007007E)":null}
  • ffmpeg and pulse audio creating buzzy speech

    17 juin 2017, par flashape

    I’m attempting to record video and audio from an ec2 instance (Ubuntu 16.04), using xvfb and pulse audio. Everything works fine, except that the output file contains "buzzy" speech (not sure if this is what "clipping" is ?). This happens using either aac or mp3 audio codecs.

    Sample audio file : http://s000.tinyupload.com/index.php?file_id=86237391396073526211

    ffmpeg command :

    ffmpeg \
    -f x11grab -framerate 30 -video_size ${SCREEN_WIDTH}x${SCREEN_HEIGHT} -i :1.0 \
    -f pulse -i default \
    -c:v libx264 -preset veryfast -maxrate 2500k -bufsize 2500k -vf "format=yuv420p" -g 60 \
    -c:a aac -strict -2 -channel_layout stereo  -ab 256k -ar 48000 -bufsize 512k -ac 2  \
    -flags +global_header -f flv "test.mp4"

    The output from ffmpeg when I run the command :

    Input #0, x11grab, from ':1.0':
     Duration: N/A, start: 1497567394.762052, bitrate: N/A
       Stream #0:0: Video: rawvideo (BGR[0] / 0x524742), bgr0, 1360x764, 30 fps, 30 tbr, 1000k tbn, 30 tbc
    Guessed Channel Layout for  Input Stream #1.0 : stereo
    Input #1, pulse, from 'default':
     Duration: N/A, start: 1497567396.743667, bitrate: 1536 kb/s
       Stream #1:0: Audio: pcm_s16le, 48000 Hz, 2 channels, s16, 1536 kb/s
    [libx264 @ 0x1977d20] using cpu capabilities: MMX2 SSE2Fast SSSE3 SSE4.2 AVX FMA3 AVX2 LZCNT BMI2
    [libx264 @ 0x1977d20] profile High, level 3.2
    [libx264 @ 0x1977d20] 264 - core 148 r2643 5c65704 - H.264/MPEG-4 AVC codec - Copyleft 2003-2015 - http://www.videolan.org/x264.html - options: cabac=1 ref=1 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=2 psy=1 psy_rd=1.00:0.00 mixed_ref=0 me_range=16 chroma_me=1 trellis=0 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=0 threads=3 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=1 keyint=60 keyint_min=6 scenecut=40 intra_refresh=0 rc_lookahead=10 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 vbv_maxrate=2500 vbv_bufsize=512 crf_max=0.0 nal_hrd=none filler=0 ip_ratio=1.40 aq=1:1.00
    Output #0, flv, to 'test.mp4':
     Metadata:
       encoder         : Lavf56.40.101
       Stream #0:0: Video: h264 (libx264) ([7][0][0][0] / 0x0007), yuv420p, 1360x764, q=-1--1, max. 2500 kb/s, 30 fps, 1k tbn, 30 tbc
       Metadata:
         encoder         : Lavc56.60.100 libx264
       Stream #0:1: Audio: aac ([10][0][0][0] / 0x000A), 48000 Hz, stereo, fltp, 256 kb/s
       Metadata:
         encoder         : Lavc56.60.100 aac
    Stream mapping:
     Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
     Stream #1:0 -> #0:1 (pcm_s16le (native) -> aac (native))

    Based on various posts, I thought it might be something in the pulse config, particularly the "resample-method" setting, but that doesn’t appear to do anything. Here is how the /etc/pulse/daemon.conf config file currently stands :

    ; daemonize = no
    ; fail = yes
    ; allow-module-loading = yes
    ; allow-exit = yes
    ; use-pid-file = yes
    ; system-instance = no
    ; local-server-type = user
    ; enable-shm = yes
    ; shm-size-bytes = 0 # setting this 0 will use the system-default, usually 64 MiB
    ; lock-memory = no
    ; cpu-limit = no

    ; high-priority = yes
    ; nice-level = -11

    ; realtime-scheduling = yes
    ; realtime-priority = 5

    ; exit-idle-time = 20
    ; scache-idle-time = 20

    ; dl-search-path = (depends on architecture)

    ; load-default-script-file = yes
    ; default-script-file = /etc/pulse/default.pa

    ; log-target = auto
    ; log-level = notice
    ; log-meta = no
    ; log-time = no
    ; log-backtrace = 0

    ; resample-method = speex-float-1
    ; resample-method = speex-float-10
    resample-method = speex-fixed-10
    ; enable-remixing = yes
    enable-lfe-remixing = yes
    ; lfe-crossover-freq = 120

    flat-volumes = no

    ; rlimit-fsize = -1
    ; rlimit-data = -1
    ; rlimit-stack = -1
    ; rlimit-core = -1
    ; rlimit-as = -1
    ; rlimit-rss = -1
    ; rlimit-nproc = -1
    ; rlimit-nofile = 256
    ; rlimit-memlock = -1
    ; rlimit-locks = -1
    ; rlimit-sigpending = -1
    ; rlimit-msgqueue = -1
    ; rlimit-nice = 31
    ; rlimit-rtprio = 9
    ; rlimit-rttime = 200000

    ; default-sample-format = s16le
    default-sample-format = s32le
    default-sample-rate = 44100
    ; default-sample-rate = 48000
    ; alternate-sample-rate = 48000
    alternate-sample-rate = 44100
    ; default-sample-channels = 2
    ; default-channel-map = front-left,front-right

    ; default-fragments = 4
    ; default-fragment-size-msec = 25
    ; default-fragments = 4
    ; default-fragment-size-msec = 25


    ; enable-deferred-volume = yes
    deferred-volume-safety-margin-usec = 1
    ; deferred-volume-extra-delay-usec = 0

    Edit :

    Ok, updated the ffmpeg command to capture only the audio, but still have the same issue :

    ffmpeg \
    -f pulse -i default \
    -c:a aac -strict -2 -channel_layout stereo  -ab 256k -ar 48000 -bufsize 512k -ac 2  \
    test.aac

    I do get some interesting messages in the output about timestamps being off :

    [aac @ 0x12a4900] Queue input is backward in timeits/s
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 175924
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 176948
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 177972
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 178996
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 180020
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 181044
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 182857 >= 182068
    [aac @ 0x12a4900] Queue input is backward in time
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 183406
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 184430
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 185454
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 186478
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 187502
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 188526
    [aac @ 0x12a4900] Queue input is backward in time
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 189550
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 190574
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 169622
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 170646
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 171670
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 172694
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 173718
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 174742
    [aac @ 0x12a4900] Queue input is backward in time
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 175766
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 176790
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 157020
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 158083
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 159107
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 160131
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 161155
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 162179
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 163203
    [aac @ 0x12a4900] Queue input is backward in time
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 164227
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 165251
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 154697
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 159400
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 160424
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 161448
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 162472
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 163496
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 164520
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 165544
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 166568
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 171795
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 172819
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 173843
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 174867
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 175891
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 176915
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 177939
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 178963
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 187279
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 189829
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 190853
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 191877
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 193354 >= 192901
    [aac @ 0x12a4900] Queue input is backward in time
       Last message repeated 2 times
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 216609 >= 216172
    [aac @ 0x12a4900] Queue input is backward in time
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 216609 >= 214950
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 216609 >= 214933
    [adts @ 0x12a35a0] Application provided invalid, non monotonically increasing dts to muxer in stream 0: 216609 >= 214836
  • Can't save matplotlib animation (ffmpeg)

    25 mai 2014, par renger

    I am trying to get a simple animation saved using ffmpeg. I followed a tutorial to install ffmpeg, and I can now access it from the command prompt.

    Now I run this piece of code :

    import numpy as np
    from matplotlib import pyplot as plt
    from matplotlib import animation

    fig = plt.figure()
    ax = plt.axes(xlim=(0, 2), ylim=(-2, 2))
    line, = ax.plot([], [], lw=2)

    def init():
       line.set_data([], [])
       return line,

    def animate(i):
       x = np.linspace(0, 2, 1000)
       y = np.sin(2 * np.pi * (x - 0.01 * i))
       line.set_data(x, y)
       return line,

    anim = animation.FuncAnimation(fig, animate, init_func=init,
                                  frames=200, interval=20, blit=True)

    mywriter = animation.FFMpegWriter()
    anim.save('mymovie.mp4',writer=mywriter)

    plt.show()

    I get this error :

    Traceback (most recent call last):
     File "<stdin>", line 1, in <module>
      File "C:\Python27\lib\site-packages\spyderlib\widgets\externalshell\sitecustomize.py", line 523, in runfile
       execfile(filename, namespace)
     File "C:\Users\Renger\.xy\startups\b.py", line 23, in <module>
       anim.save('mymovie.mp4',writer=mywriter)
     File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 609, in save
       with writer.saving(self._fig, filename, dpi):
     File "C:\Python27\lib\contextlib.py", line 17, in __enter__
       return self.gen.next()
     File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 166, in saving
       self.setup(*args)
     File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 156, in setup
       self._run()
     File "C:\Python27\lib\site-packages\matplotlib\animation.py", line 183, in _run
       stdin=subprocess.PIPE)
     File "C:\Python27\lib\subprocess.py", line 711, in __init__
       errread, errwrite)
     File "C:\Python27\lib\subprocess.py", line 948, in _execute_child
       startupinfo)
    WindowsError: [Error 2] Het systeem kan het opgegeven bestand niet vinden
    </module></module></stdin>

    The last dutch sentence does mean something like : The system can’t find the specified file.

    What do these errors mean, and how can I solve them ?

    Best,