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• Révision 19184 : Dans un cas où le serveur est configuré avec un expire sur text/html, le privé e...

  30 mars 2012, par kent1 -

  cf le message de marcimat là http://technique.arscenic.org/lamp-linux-apache-mysql-php/apache/optimisations/article/expire-headers#forum168 dont j’ai eu l’expérience aussi Autant l’éviter si possible ici

• How can I cut out detected freezed (used "freezedetect") parts from a video file using ffmpeg ?

  24 mars 2020, par Itzhak Eretz Kdosha

  I am trying to process a recorded stream that has a lot of freezes.
  I am able to detect the freeze sections using "freezedetect" but I dont know how to pipe the result and cut them out of the video.
  (no experience in video processing at all)

  Would appreciate any help, thanks.

• dts to m4a (aac) ffmpeg to qaac output issue

  10 avril 2014, par user8979

  Looking to encode 2 dts 5.1 audio sources (Sonic Landscape and The Digital Experience) to m4a (aac) 5.1 with qaac 2.35. Input piped to qaac using :

  ffmpeg -report -loglevel verbose -i "input.file" -vn -f wav -codec:a pcm_f32le - | qaac --cvbr 160 --quality 2 --rate=keep --ignorelength --no-delay - -o "output.m4a"

  • Sonic Landscape duration : 18.848s, qaac output duration : 18.859s

    • output .m4a duration mismatch
    • mediainfo reports output is 2ch while mediatab and ffmpeg report output is 5.1ch (lfe)
      
      

  • The Digital Experience duration : 32.875s, qaac output duration : 32.875s

    • mediainfo reports output is 2ch while mediatab and ffmpeg report output is 5.1ch (lfe)
      
      

  1. what caused the duration mismatch in the first one ? how can it be fixed ?
  2. is the output 2ch or 5.1ch ?
     
     • if it is 2ch, what qaac option(s) leave the channels in output same as input ?
     • if the output is 5.1ch, does qaac then always preserve channels unless explicitly told otherwise ?