Recherche avancée

Sur d’autres sites (7930)

• MP3 stream (ytdl-core) to PCM with fluent-ffmpeg

  3 juin 2021, par Schwieriiiiig

  So basically im trying to convert a MP3 stream, coming in from an NodeJS readable, to the PCM format so i can play it back via the Speaker Package.

  


  I tried many things including : node-lame, lame, lamejs -> so i figured why not use the ffmpeg libary directly.

  


  My Attempt (doesn't work) :

  


  const args = " u r l "
[...]
const dl = ytdl(args, {
    filter: "audioonly",
});
const speaker = new Speaker();
ffmpeg(dl).audioCodec("libmp3lame").format("s16le").pipe(speaker);


  


  It is however playing something, but it's more like pink or white noise.

  


  Thanks in advance !

  


  PS : i installed FFmpeg correctly
  
PSS : i use this in the main process from electron but i don't see why this would make a difference

  


• Use specific channels from specific streams for the final stream using FFMPEG [closed]

  9 juin 2024, par Kazu-kun

  I want to create a 5.1ch audio stream from a 2ch audio stream. However I want to put a negative delay to LFE, SL and SR channels since they will be played from my bluetooth speaker, so I want to make up for the delay by giving it a negative delay.

  


  


  ffmpeg -itsoffset 0.1 -i input.mkv -i input.mkv

  


  -filter_complex “

  


  [1:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [0:a]pan=5.1(side)|FL=FL|FR=FR|LFEp>


  [orig5_1][delayed5_1]amerge=inputs=2,pan=5.1(side)|FL=c6|FR=c7|LFE=c2|SL=c3|SR=c4[a]”

  


  -map "[a]" -map 0:v -map 0:s -c:v copy -c:a flac -c:s copy output.mkv

  


  


  I tried taking the same input twice with the first one being delayed by 0.1 secs. With the delayed input a 5.1 audio is created and with the original another 5.1 audio is created as well. Then the two audio streams are merged with amerge and combined into a single 5.1 audio by taking delayed channels for FL and FR(These will be played from my MacBook) and by taking original channels for LFE, SL and SR(These will be played from my bluetooth JBL). Finally the video and subs streams are taken from the delayed.

  


  The above command gave a "pipe pipe pipe dqoute" error and when I entered the command again it said :

  


  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : no such file or directory : FL+FR

  


  zsh : unknown file attribute : i

  


  zsh : command not found : -map

  


  


  Please give me a command for my requirement !

  


• Anomalie #2003 (Fermé) : calculer_select, jointures complexes

  2 mars 2011, par cedric -

  intégré par http://core.spip.org/projects/spip/repository/revisions/17322 a valider extensivement lors des tests de la version dev.