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• Transcodeit Add metadata to audio files

  22 avril 2016, par Gismmo

  I have found how to encode audio tracks to multiple formats, I am just struggling to try and find a way to attach specific metadata to the tracks when they are encoded. I would like to add, album artwork, artists name, track name, and genre etc.

  I can see in the audio encoding parameters there are additional FFmpeg parameters you can set, however i am unsure what to use in order to set the metadata ?

  {
  
    "steps": {
  
    "imported": {
  
    "robot": "/s3/import",
  
    "result": true,
  
    "key": "AWS_KEY",
  
    "secret": "AWS_SECRET",
  
    "bucket": "BUCKET",
  
    "path": "CUSTOM-PATH"
  
  },
  
  "mp3": {
  
    "use": "imported",
  
    "robot": "/audio/encode",
  
    "result": true,
  
    "preset": "mp3",
  
    "ffmpeg": [],
  
    "ffmpeg_stack": "v2.2.3"
  
  },
  
  "wav": {
  
    "use": "imported",
  
    "robot": "/audio/encode",
  
    "result": true,
  
    "preset": "wav",
  
    "ffmpeg_stack": "v2.2.3"
  
  },
  
  "export": {
  
    "robot": "/s3/store",
  
    "use": [
  
      "mp3",
  
      "wav"
  
    ],
  
    "key": "AWS_KEY",
  
    "secret": "AWS_SECRET",
  
    "bucket": "BUCKET"
  
  }

• Adding subtitles with FFMpegCore in C# is not working on Azure Function

  1er février 2024, par Skerdi Berberi

  I have deployed a C# azure function with ffmpeg.exe (using FFMpegCore nuget). The function adds audio and srt/ass subtitles to a video.
When I test locally this code works (running on azurite). But, when I deploy the azure function, the audio is added to the video but the subtitles don't show up.

  


  At the begining I thought it was an issue with the Fonts because I was using ASS File for subtitles but then I switched to SRT and still is not working.

  


  I've tried with both SRT and ASS but they both don't work using this code :

  


  await FFMpegArguments
 .FromFileInput(videoInputPath, true, options =>
 {
     options.WithCustomArgument("-stream_loop -1");
 })
 .AddFileInput(audioPath, true)
 .OutputToFile(videoOutputPath, true, (options) =>
 {
     options.WithDuration(thread.AudioData.TotalAudioDuration);

     options.WithVideoCodec(VideoCodec.LibX264);   // Re-encode video using x264 codec
     options.WithAudioCodec(AudioCodec.Aac);       // Re-encode audio to AAC
     options.WithSpeedPreset(Speed.VeryFast);
     options.UsingShortest(true);

     options.WithVideoFilters((videoOptions) =>
     {
         videoOptions.HardBurnSubtitle(SubtitleHardBurnOptions.Create(subtitlesFile));
     });
 }).ProcessAsynchronously();


  


  Here's the command it creates on Azure function :

  


  ffmpeg -stream_loop -1 -i "C:\local\Temp\videoTempPath.mp4" -i "C:\local\Temp\audioTempPath.mp3" -t 00:00:22.8160000 -c:v libx264 -c:a aac -preset veryfast -shortest -vf "subtitles='C\:\\local\\Temp\\subtitles.srt'" "C:\local\Temp\output.mp4" -y


  


• Transcode video using celery and ffmpeg in django

  28 octobre 2015, par Robin

  I would like to transcode user uploaded videos using celery. I think first I should upload the video, and spawn a celery task for transcoding.

  Maybe something like this in the tasks.py :

  subprocess.call('ffmpeg -i path/.../original path/.../output')

  Just completed First steps with celery, so confused how to do so in the views.py and tasks.py. Also is it a good solution ? I would really appreciate your help and advice. Thank you.

  models.py :

  class Video(models.Model):
  
      user = models.ForeignKey(User)
  
      title = models.CharField(max_length=100)
  
      original = models.FileField(upload_to=get_upload_file_name)
  
      mp4_480 = models.FileField(upload_to=get_upload_file_name, blank=True, null=True)
  
      mp4_720 = models.FileField(upload_to=get_upload_file_name, blank=True, null=True)
  
      privacy = models.CharField(max_length=1,choices=PRIVACY, default='F')
  
      pub_date = models.DateTimeField(auto_now_add=True, auto_now=False)

  my incomplete views.py :

  @login_required
  
  def upload_video(request):
  
      if request.method == 'POST':
  
          form = VideoForm(request.POST, request.FILES)
  
          if form.is_valid():
  
              if form.cleaned_data:
  
                  user = request.user
  
                  #
  
                  #
  
                  # No IDEA WHAT TO DO NEXT
  
                  #
  
                  #
  
                  return HttpResponseRedirect('/')
  
  
  
      else:
  
          form = VideoForm()
  
          return render(request, 'upload_video.html', {
  
              'form':form
  
              })