Recherche avancée

Sur d’autres sites (8745)

• apng : Add a basic APNG muxer

  28 mars 2015, par Donny Yang

  apng : Add a basic APNG muxer
  Additionally, update some documentation with support for APNG
  Signed-off-by : Donny Yang <work@kota.moe>
  
  Reviewed-by : Paul B Mahol <onemda@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] Changelog
  • [DH] doc/general.texi
  • [DH] libavformat/Makefile
  • [DH] libavformat/allformats.c
  • [DH] libavformat/apngenc.c

• Anomalie #3930 : Moteur de recherche : combinaison de DEUX mots avec accents ne retourne rien

  1er octobre 2018, par - Equipement

  Pour information, j’ai effectué les tests suivants sur SPIP 3.2.1 [23954] (installation neuve puis ajout d’une rubrique "secrétariat général" et de son article publié) :

  - sous PHP 7.0 avec mariaDB : la recherche sur "secrétariat général" trouve bien la rubrique.
  - sous PHP 5.6 avec mysql 5.6 : la recherche sur "secrétariat général" ne trouve pas la rubrique.

  Je précise que dans les deux cas, les bases sont en utf8 et que l’interclassement des tables est utf8_general_ci.

  A titre de test (ce n’est pas une proposition de correctif), au début de la fonction inc_recherche_to_array_dist, j’ai ajouté :
  

  <span class="CodeRay"><span class="local-variable">$recherche</span> = ci_rewrite(<span class="local-variable">$recherche</span>);
  </span>
  Télécharger

  
  puis j’ai ajouté la fonction :
  

  <span class="CodeRay"><span class="keyword">function</span> <span class="function">ci_rewrite</span>(<span class="local-variable">$chaine</span>){
    <span class="local-variable">$rewrite</span> = <span class="predefined">strtr</span>(
        <span class="local-variable">$rewrite</span>, 
        <span class="string"><span class="delimiter">'</span><span class="content">@ÀÁÂÃÄÅÇÈÉÊËÌÍÎÏÒÓÔÕÖÙÚÛÜÝàáâãäåçèéêëìíîïðòóôõöùúûüýÿ</span><span class="delimiter">'</span></span>,
        <span class="string"><span class="delimiter">'</span><span class="content">aAAAAAACEEEEIIIIOOOOOUUUUYaaaaaaceeeeiiiioooooouuuuyy</span><span class="delimiter">'</span></span>
    );
      <span class="keyword">return</span> <span class="local-variable">$rewrite</span>;
  }
  </span>
  Télécharger

  
  Avec ce bout de code, la recherche sur "secrétariat général" trouve alors la rubrique, sous PHP 5.6 avec mysql 5.6.

  Remarque : j’ai aussi essayé avec la fonction translitteration de SPIP, mais cela ne marche pas.

• FFmpeg Not Transcoding In Real Time

  2 décembre 2018, par Nimble

  Been setting up a recording build for a friend to resemble mine, but I can’t seem to get things to work in real-time despite sufficient (as far as I can tell) hardware.

  System specs : 8600K, GTX 1050ti, 16Gb RAM, 1tb 860 EVO

  Test command :

  ffmpeg -y -hide_banner -thread_queue_size 9999 -indexmem 9999 -guess_layout_max 0 -f dshow -rtbufsize 2147.48M `
  
  -video_size 1920x1080 -framerate 60 `
  
  -i video="@device_pnp_\\?\usb#vid_07ca&pid_0570&mi_00#7&3886ab1a&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global":audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{0A494693-5F33-4304-88D7-394757E09648}" `
  
  -thread_queue_size 9999 -indexmem 9999 -guess_layout_max 0 -f dshow -rtbufsize 2147.48M `
  
  -video_size 1920x1080 -framerate 60 `
  
  -i video="@device_pnp_\\?\usb#vid_07ca&pid_0570&mi_00#7&24df76f&0&0000#{65e8773d-8f56-11d0-a3b9-00a0c9223196}\global":audio="@device_cm_{33D9A762-90C8-11D0-BD43-00A0C911CE86}\wave_{0E6F0DEF-2B29-4117-8D30-13F01160AC5B}" `
  
  -map 0:0,0:1 -map 0:1 -c:v h264_nvenc -r 60 -rc-lookahead 120 -forced-idr 1 -strict_gop 1 -sc_threshold 0 -flags +cgop `
  
  -force_key_frames "expr:gte(t,n_forced*2)" -preset: llhp -pix_fmt nv12 -b:v 250M -minrate 250M -maxrate 250M `
  
  -bufsize 250M -c:a aac -ar 44100 -b:a 384k -ac 2 -af "aresample=async=250" -vsync 1 -ss 00:00:00.000 `
  
  -max_muxing_queue_size 9999 -f segment -segment_time 600 -segment_wrap 9 -reset_timestamps 1 `
  
  -segment_format_options max_delay=0 C:\Users\Jordan\Videos\FFmpeg\Left\Left%02d.ts `
  
  -map 1:0,1:1 -map 1:1 -c:v h264_nvenc -r 60 -rc-lookahead 120 -forced-idr 1 -strict_gop 1 -sc_threshold 0 -flags +cgop `
  
  -force_key_frames "expr:gte(t,n_forced*2)" -preset: llhp -pix_fmt nv12 -b:v 250M -minrate 250M -maxrate 250M `
  
  -bufsize 250M -c:a aac -ar 44100 -b:a 384k -ac 2 -af "aresample=async=250" -vsync 1 -ss 00:00:00.000 `
  
  -max_muxing_queue_size 9999 -f segment -segment_time 600 -segment_wrap 9 -reset_timestamps 1 `
  
  -segment_format_options max_delay=0 C:\Users\Jordan\Videos\FFmpeg\Right\Right%02d.ts

  For one reason or another this command is not transcoding video in real-time, which is a big issue when you’re trying to record not simply convert a file. When I omit one of the two outputs or if I halve the resolution of each input / output everything works in real-time. This would make me believe there is a bottleneck in the system somewhere but when monitoring everything in task manager nothing is even close to capping out (GPU encoder, cpu, ram, and SSD below 30% usage).

  Furthermore when I try recording both streams in one 4K60 video via OBS things work perfectly fine, as in real-time. So I don’t understand how transcoding two 1080p60 streams in FFmpeg would be anymore intensive than one 4K60 stream in OBS... When looking at the GPUs encoding chip usage it shows about 30% for the two 1080p60 streams on FFmpeg and 80% usage for single 4K60 stream in OBS, yet the OBS recording is real-time while the FFmpeg recording is at .6x speed.

  Lastly I run a very similar command at home but instead of two 1080p60 streams I’m doing 2 4K60 streams, a 1080p60 stream, and another 2 audio streams without issue. I do have a GTX 1080 though... however when monitoring usage for the 1050 TI being used in this situation nothing points to a GPU bottlecap.

  Any insight would be greatly appreciated, been going at this for hours now with no clue as to what could be causing this.