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• ffmpeg record pulseaudio has some crackles

  8 janvier 2021, par boygiandi

  I'm trying to record audio from pulseaudio (on Centos 7), using ffmpeg. But the audio is not smooth, it has some crackles, noise after few seconds
Please check this video link : https://www.facebook.com/watch/live/?v=692754594726722&ref=watch_permalink

  


  The ffmpeg command looks like this

  


  ffmpeg -fflags +igndts -framerate 30 -s 1920x1130 -draw_mouse 0 -f x11grab -i :1085.0+nomouse -f pulse -i sinkgstvDViJbLFIaUBLdTxTeLtr.monitor -c:v libx264 -filter:v crop=1920:1080:0:50 -g 60 -r 30 -bufsize 2M -b:v 7M -vbsf h264_mp4toannexb -pix_fmt yuv420p -strict experimental -preset ultrafast -c:a aac -async 1 -vsync 1 -b:a 128k -bsf:a aac_adtstoasc -metadata comment=gstvDViJbLFIaUBLdTxTeLtr -f flv "rtmps://live-api-s.facebook.com:443/rtmp/4248189238527878?s_bl=1&s_psm=1&s_sc=4248189291861206&s_sw=0&s_vt=api-s&a=Abx_pMiM4_ccqBcS"


  


  I found this article but it didn't fix my problem https://forum.level1techs.com/t/improving-linux-audio-updated/134511 .
Please help

  


• Evolution #2633 : Pouvoir modifier _DIR_RESTREINT_ABS

  10 juillet 2015, par jluc -

  Pourrait on réouvrir ce ticket ?

  Dans SPIP 3.1 du 15 juin environ voici la liste des occurences de ecrire que j’ai trouvé dans la dist :

  squelettes-dist/robots.txt.html:11:Disallow : /ecrire/
  spip_loader.php:44:define(’_SPIP_LOADER_PLUGIN_RETOUR’, "ecrire/ ?exec=admin_plugin&voir=tous") ;
  
  spip_loader.php:923:if (@file_exists(’ecrire/inc_version.php’)) 
  
  spip_loader.php:924 :    define(’_SPIP_LOADER_URL_RETOUR’, "ecrire/ ?exec=accueil") ;
  
  spip_loader.php:925 :    include_once ’ecrire/inc_version.php’ ;
  
  spip_loader.php:933 : else define(’_SPIP_LOADER_URL_RETOUR’, "ecrire/ ?exec=install") ;
  spip.php:14:if (!defined(’_DIR_RESTREINT_ABS’)) define(’_DIR_RESTREINT_ABS’, ’ecrire/’) ;
  ecrire/inc/flock.php:607 : *     $x = preg_files(’ecrire/data/’, ’[.]lock$’) ;
  
  ecrire/public/debusquer.php:366 :    if ($reg[1]==’ecrire/public’)
  
  ecrire/inc_version.php:38 :    define(’_DIR_RESTREINT_ABS’, ’ecrire/’) ;
  
  ecrire/inc_version.php:42 : *  vide si on est dans ecrire, ’ecrire/’ sinon */
  plugins-dist/compresseur/tests/compacte_css.php:10 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/forum/prive/modeles/forum-actions-moderer.html:2 :[(#SETretour,[(#REM|test_espace_prive| ?[(#VALecrire/|concat#SELF|replace’./’,’’)],#SELF|ancre_urlforum#ID_FORUM)])]
  
  plugins-dist/filtres_images/tests/_couleur_rgb2hsv.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/filtres_images/tests/_couleur_hsv2rgb.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/filtres_images/tests/_couleur_rgb2hsl.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/filtres_images/tests/multiple_de_trois.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/filtres_images/tests/couleur_extraire.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/filtres_images/tests/_couleur_hsl2rgb.php:13 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/textwheel/tests/tw_propre_modeles_block.php:9 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/textwheel/tests/tw_propre_modeles_inline.php:9 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/textwheel/tests/tw_propre_typo.php:9 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/textwheel/tests/tw_propre.php:9 :    while (!is_dir($remonte."ecrire"))
  
  plugins-dist/porte_plume/tests/lanceur_spip.php:7:while (!is_dir($remonte."ecrire"))
  
  plugins/spipr/zcore/v2.4.3/tests/zcore_echafaudable.php:12 :    while (!is_dir($remonte."ecrire"))
  
  plugins/auto/zcore/v2.4.5/tests/zcore_echafaudable.php:12 :    while (!is_dir($remonte."ecrire"))
  
  plugins/auto/gis/v4.26.12/tests/gis_connect_sql.php:10 :    while (!is_dir($remonte."ecrire"))
  
  config/ecran_securite.php:113 :    OR @file_exists(’ecrire/inc_version.php’)) 
  
  config/ecran_securite.php:259:if (strpos($_SERVER[’REQUEST_URI’],"ecrire/") !==false)
  
  

• Can this be a TC burn-in ; 993[1001(1001)1100]1108 - start frame 1001 end 1100 ; (1001) is current frame ;993 &1108 are head and tail 8 frame handles

  21 novembre 2022, par Abraham Thomas

  Need to create a Timecode overlay on videos in frames as "993[1001(1001)1100]1108"
Here -start frame is 1001 and last frame is 1100 ;
the (1001) is the current frame counter
and 993 and 1108 are head and tail handles (1001-8 and 1100+8)

  


  This is currently done in Davinci Resolve by using below text script (was helped in another forum) :
comp.RenderStart+1001-8 .. " [".. comp.RenderStart+1001 .. " (" .. time+1001 ..") " .. comp.RenderEnd +1001 .. "] " ..comp.RenderEnd +1001+8

  


  At times there are 200 + video clips requiring this ; if same can be achieved in ffmpeg this will speed up our workflow. Is this possible using a single ffmpeg command ; please help

  


  In this forum someone had posted a Timecode overlay command, which gives the current frame number ;
I've used this and this below single command works for me :

  


  ffmpeg -i inputvid.mp4 -vf "drawtext=fontfile=Arial.ttf : text='%frame_num' : start_number=1001 : x=(w-tw)/2 : y=h-(2*lh) : fontcolor=white : fontsize=55 : box=1 : boxcolor=black : boxborderw=5" -c:a copy D :\Test\outputvid.mp4

  


  Is there a way to add to this command ; the first frame and last frame of the video automatically detected by ffmpeg (I'm on windows) ;