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• FFMPEG keep an original canva size with a background image

  26 novembre 2019, par romain1304

  Im trying to generate a wave with ffmpeg and audio input.
  Now i generate a wave, then my background image fit the canva and the canva becomes the size of the background image.
  I would like to keep the original size of the canva 1280x720.
  And i would like the background image to have the size i would put on input.

  So basically i would like one canva with a size of 1280x720 , one image with certain coordinate and a certain size and one waveforme.

  This is my result :
  

  This is the result i would like to obtain :

  

  If anyone can help !
  Thanks,

• Revision 8701ed0270 : update vp9_thread.c pull the latest from libwebp. Original source : http://git

  9 juillet 2014, par James Zern

  Changed Paths :
   Modify /test/vp9_thread_test.cc

  
   Modify /vp9/common/vp9_thread.c

  
  
  update vp9_thread.c

  pull the latest from libwebp.

  Original source :
  http://git.chromium.org/webm/libwebp.git
  100644 blob 264210ba2807e4da47eb5d18c04cf869d89b9784 src/utils/thread.c

  commit 46fd44c1042c9903b2f1ab87e9f200a13c7e702d
  Author : James Zern <jzern@google.com>
  Date : Tue Jul 8 19:53:28 2014 -0700

  thread : remove harmless race on status_ in End()

  if a thread was still doing work when End() was called there’d be a race
  on worker->status_. in these cases, however, the specific value is
  meaningless as it would be >= OK and the thread would have been shut
  down properly, but we’ll check ’impl_’ instead to avoid any potential
  TSan/DRD reports.

  Change-Id : Ib93cbc226a099f07761f7bad765549dffb8054b1

  Change-Id : Ib0ef25737b3c6d017fa74822e21ed58508230b91

• ffmpeg splitted output larger than original file [closed]

  27 novembre 2023, par Exorcismus

  am trying to split an input audio file into multiple parts of smaller size, while the original file size is 28 MB, the output files are 28MB, 28MB, 14MB.

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  what other parameters should be used in order to reduce output size ?

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  function processAudio() {
  return new Promise((resolve, reject) => {
    ffmpeg()
      .input("2oWbDCql4JA.mp4")
      .outputOptions('-f segment')
      .outputOptions(`-segment_time 1800`)
      .output("audio-%03d-output.mp4")
      .on("error", (error, std, err) => {
        console.log(std)
        console.log(err)
        reject("Failed to process video: " + error)
      })
      .on("progress", (progress) => console.log(progress))
      .on('end', function () {
        console.log('Finished processing');
      })
      .run();
  });;
}

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