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• aarch64 : vp8 : Reorder the function pointer inits to match the arm original

  31 janvier 2019, par Martin Storsjö

  aarch64 : vp8 : Reorder the function pointer inits to match the arm original
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavcodec/aarch64/vp8dsp_init_aarch64.c

• Convert .MOD video files to .mp4 but maintain original file date

  27 février 2016, par Barryman9000

  Windows 10,
  ffmpeg

  I’m very new to ffmpeg so I can’t figure this out. I’m trying to use a command to copy then convert all .MOD video files in a directory to .mp4 files and keep the original date that the .MOD file was created. I don’t understand how to map the current file in the loop to the map_metadata option. This command works but doesn’t maintain the metadata (taken from this post)

  FOR /F "tokens=*" %G IN ('dir /b *.MOD') DO ffmpeg -i "%G" -acodec copy "%~nG.mp4"

  I’ve tried including the map in the above command but get various errors, mostly "invalid input file index : 1". The commands below will copy and convert but the new .mp4 files don’t have the original file date so I must be using map_metadata incorrectly :

  FOR /F "tokens=*" %G IN ('dir /b *.MOD') DO ffmpeg -i "%G" -acodec copy -map_metadata 0 "%~nG.mp4"
  
  
  
  FOR /F "tokens=*" %G IN ('dir /b *.MOD') DO ffmpeg -i "%G" -map_metadata 0 -acodec copy "%~nG.mp4"

  Any suggestions ? Thanks

  UPDATE

  I got this with Powershell ! (thanks to this post)

  $oldvids = Get-ChildItem *.MOD -Recurse
  
  foreach ($oldvid in $oldvids) {
  
      $newvid = [io.path]::ChangeExtension($oldvid.LastWriteTime.toString("MMMddyyyy_HHmmss"), '.mp4')
  
      ffmpeg.exe -i $oldvid.FullName -c:v libx264 -crf 18 -c:a aac -q:a 100 $newvid
  
  }

  input : MOV01E.MOD (Created date 4/1/2012 10:10 AM)

  output : Apr012012_101005.mp4

  ANOTHER UPDATE

  The above command kind of works but I just realized all of the files are output to the root directory. I changed the command a bit but I’m not sure what’s going on :

  Get-ChildItem *.MOD -recurse | % {
  
      $newvid =  [io.path]::ChangeExtension($_.LastWriteTime.toString("MMMddyyyy_HHmmss"), '.mp4')
  
      ffmpeg.exe -i $_.FullName -c:v libx264 -crf 50 -c:a aac -q:a 100 $newvid
  
  }

• 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.

  


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

  


  


  


  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();
  });;
}