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• PowerShell script to Embed Album art in MP3 files - issues with accelerated audio files in ffmpeg

  4 mars, par moshe baruchi

  I am trying to embed album art into an MP3 file using a PowerShell script along with the TagLib library. The MP3 file has been speed-boosted using FFmpeg. When I run the script on regular audio files, it works fine, but with the accelerated audio files, the album art is only visible when I open the file in MP3Tag or in VLC. It's not showing up in Windows audio players and definitely not in File Explorer.

  


  PowerShell code

  


  param (
    [string]$audio,
    [string]$picture
)
Add-Type -Path "TagLib-Sharp.dll"
$audioFilePath = $audio
$albumArtPath = $picture
$audioFile = [TagLib.File]::Create($audioFilePath)
$tag = $audioFile.Tag
$newPictures = New-Object System.Collections.Generic.List[TagLib.Picture]
$newPictures.Add((New-Object TagLib.Picture($albumArtPath)))
$tag.Pictures = $newPictures.ToArray()
$audioFile.Save()


  


  Commands in cmd

  


  ffmpeg -i song.mp3 -i cover.jpg -map 0:a -map 1 -c:a copy -c:v mjpeg -metadata:s:vtitle="Album Cover" -metadata:s:v comment="Cover (front)" output_with_cover.mp3
del song.mp3
rename output_with_cover.mp3 song.mp3
powershell -ExecutionPolicy Bypass -File "albumart.ps1" -audio "song.mp3" -picture "picture.jpg"


  


• FFMPEG draw text with change over time [duplicate]

  18 avril 2020, par bleepbloopbleep

  Hi i am working on a project that will get metadata from an mp3 file and then stream the file with text displaying the Artist Name and Song Title from the metadata.

  



  In order to get around a bug I concatenated the audio files into one larger file and got the meta data from each track before the concatenation.

  



  While streaming I want to display the artist name and song title while the track is playing.

  



  The current text script for just the text looks like this :

  



  drawtext=text='Artist: ARTISTNAME:fontfile=PATH/TO/FONT/FILE:fontsize=(w * 0.03333333333333333):bordercolor=#000000:borderw=1:fontcolor=#FFFFFF:y=(h * 0.15):x=(w * 0.02),drawtext=text='Song: NAME’OFSONG:fontfile=PATH/TO/FONT/FILE:fontsize=(w * 0.03333333333333333):bordercolor=#000000:borderw=1:fontcolor=#FFFFFF:y=(h * 0.25):x=(w * 0.02)"


  



  How can I add time duration element to the FFMEG script ?

  



  Thanks !

  


• If conditions in a loop breaking ffmpeg zoom command

  6 mai 2017, par Sulli

  I have built a bash script where I am trying to zoom in an image with ffmpeg, for 10s :

  ffmpeg -r 25 -i image0.jpg -filter_complex "scale=-2:10*ih,zoompan=z='min(zoom+0.0015,1.5)':d=250:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)',scale=-2:720"  -y -shortest -c:v libx264 -pix_fmt yuv420p temp_1.mp4 

  This command is included in a while loop, with two "if" conditions at the beginning of the loop :

  first=1017 
  
  i=0
  
  while read status author mySource myFormat urlIllustration credit shot_id originalShot categories title_EN length_title_EN text_EN tags_EN title_FR length_title_FR text_FR tags_FR title_BR length_title_BR text_BR tags_BR; do
  
  
  
      if [ $myFormat != "diaporama" ]; then 
  
          let "i = i + 1"
  
          continue
  
      fi
  
  
  
      if [ "$shot_id" -lt "$first" ]; then 
  
          let "i = i + 1"
  
          continue
  
      fi
  
  
  
      rm temp_1.mp4
  
      ffmpeg -r 25 -i image0.jpg -filter_complex "scale=-2:10*ih,zoompan=z='min(zoom+0.0015,1.5)':d=250:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)',scale=-2:720"  -y -shortest -c:v libx264 -pix_fmt yuv420p temp_1.mp4 
  
  
  
  
  
      let "i = i + 1"
  
  done <../data.tsv
  
  echo "All done."

  (I have removed stuff in the loop, this is the minimal code that is able to capture the problem).

  Now the weird bug : if I run this code like that, the video I am trying to generate will not be 10s long, only 1-2s long. ffmpeg exits with error "[out_0_0 @ 0x2fa4c00] 100 buffers queued in out_0_0, something may be wrong."

  Now if I remove one of the "if" conditions at the beginning of my loop (the first or the second, it doesn’t matter), the video will be generated fine and be 10s long.

  What could be the cause of this problem ?