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Autres articles (75)

  • Organiser par catégorie

    17 mai 2013, par

    Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
    Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
    Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)

  • Récupération d’informations sur le site maître à l’installation d’une instance

    26 novembre 2010, par

    Utilité
    Sur le site principal, une instance de mutualisation est définie par plusieurs choses : Les données dans la table spip_mutus ; Son logo ; Son auteur principal (id_admin dans la table spip_mutus correspondant à un id_auteur de la table spip_auteurs)qui sera le seul à pouvoir créer définitivement l’instance de mutualisation ;
    Il peut donc être tout à fait judicieux de vouloir récupérer certaines de ces informations afin de compléter l’installation d’une instance pour, par exemple : récupérer le (...)

  • D’autres logiciels intéressants

    12 avril 2011, par

    On ne revendique pas d’être les seuls à faire ce que l’on fait ... et on ne revendique surtout pas d’être les meilleurs non plus ... Ce que l’on fait, on essaie juste de le faire bien, et de mieux en mieux...
    La liste suivante correspond à des logiciels qui tendent peu ou prou à faire comme MediaSPIP ou que MediaSPIP tente peu ou prou à faire pareil, peu importe ...
    On ne les connais pas, on ne les a pas essayé, mais vous pouvez peut être y jeter un coup d’oeil.
    Videopress
    Site Internet : (...)

Sur d’autres sites (4770)

  • VLC libx264 build error - "undefined reference to 'x264_encoder_open_128'"

    17 janvier 2013, par Tyler Scott

    Primary issue

    Steps to attempt to repeat this error.

    • Download latest git (git ://git.videolan.org/x264.git).
    • Run ./configure - You can use any options, the error is present with all.
    • Run sudo make - It will compile all of the code but when it comes time to link the code it runs into the error

      /usr/local/lib/libavcodec.a(libx264.o) : In function 'X264_init' :
      /.../libx264.c:418 : undefined reference to 'x264_encoder_open_128'

    This will then fall out and exit make. I have removed all apt packages relating to x264. I have searched my computer for any possible libraries that might be related and removed them. This problem persists. Can someone explain what is going wrong and the simplest way to solve this ?

    Additional info

    This error also shows up when building avconv. It also fails at linking time with the same error. So I can assume it is nothing wrong with that directory or source.

  • Linking with ffmpeg shared build

    28 janvier 2013, par Sriram

    I am trying to work with the ffmpeg library on a cygwin development environment. I downloaded the shared build from here (64-bit). The bin folders contain dlls but no .a or .dll.a files. Linking, which is done like so :

    $ gcc encoding_mp3.o -L/cygdrive/c/Users/Desktop/webserver/cygnus/lib/w32api -L/cygdrive/c/Users/Desktop/webserver/cygnus/ffmpeg/ffmpeg_shared/bin -lavcodec-54 -lm -luser32 -lpthread -o encoding_mp3

    results in the following error :

    /cygdrive/c/Users/Desktop/webserver/cygnus/ffmpeg/ffmpeg_shared/bin/avcodec-54.dll: file not recognized: File format not recognized collect2: ld returned 1 exit status

    My question(s) :
    1. The bin/ folder in the shared build contains only avcodec-54.dll. Is there a way to convert the dll to a dll.a or .a ?
    2. Where am I going wrong ?

    If source code is required, please let me know.

  • 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

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