Recherche avancée

Sur d’autres sites (3500)

• ffmpeg started with initial_pause won't play

  25 janvier 2015, par ComputerSaysNo

  I need to :

  • connect to RTSP server
  • send all RTSP commands except PLAY(hence the ’initial_pause’ option)
  • send custom packet to server via GET_PARAMETER command
  • send PLAY command <- this does not work

  I am successfully sending and receiving data using ffurl_write/read, after which I’m sending av_read_play(context) <- this is being sent correctly and receives response(network sniffer says so), however, ffmpeg is not able to find the video codec for some reason, error :

  [rtsp @ 0x7fff0a858800] Could not find codec parameters for stream 0 (Video : h264) : unspecified size
  Consider increasing the value for the ’analyzeduration’ and ’probesize’ options

  I did increase the probsize and analyzeduration to obscene values without luck.

  My question is : how can I resume/play the stream, what am I missing ?

  Feel free to ask any additional questions that may help in finding the issue.

• How to save media files to Heroku local storage with Django ?

  25 juillet 2022, par Diyan Kalaydzhiev

  Im having a Django REST app with React for client. Im recording a file with React and sending in to Django. When i save it i modify it with ffmpeg and save it again in the same folder with a new name, the ffmpeg command looks like this :

  &#xA;

  os.system(f"ffmpeg -i {audio_path} -ac 1 -ar 16000 {target_path}")

  &#xA;

  Because i need a path for my audio both for opening and saving, i can't use cloud stores like "Bucket S3, Cloudinary etc.". And the fact that im using it only for a few seconds and then deleting it makes Heroku (the app is deployed there) the perfect place to save it non-persistent. The problem is that the file isn't getting saved in my library with media files. It saves in the postgre db but doesn't in my filesystem and when i try to access it my program returns that there isn't a file with that name. My question is How can i save media files in Heroku file system and how to access them ?

  &#xA;

  settings.py

  &#xA;

  MEDIA_ROOT = os.path.join(BASE_DIR,'EmotionTalk/AI_emotion_recognizer/recordings')
MEDIA_URL = '/'


  &#xA;

  urls.py

  &#xA;

  urlpatterns = [
path('admin/', admin.site.urls),
path('', include('EmotionTalk.emotion_talk_app.urls')),
path('auth/', include('EmotionTalk.auth_app.urls')),
path('api-token-auth/', views.obtain_auth_token),
] + static(settings.STATIC_URL, document_root=settings.STATIC_ROOT) \
+ static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)


  &#xA;

  views.py

  &#xA;

      def post(self, request):
    file_serializer = RecordingSerializer(data=request.data)

    if file_serializer.is_valid():
        file_serializer.save()

        file_name = file_serializer.data.get('recording')
        owner_id = file_serializer.data.get('owner_id')

        current_emotions_count = len(Profile.objects.get(user_id=owner_id).last_emotions)

        print(file_name)
        recognize_emotion.delay(file_name, owner_id)

        return Response({
            'data': file_serializer.data,
            'current_emotions_count': current_emotions_count
        }, status=status.HTTP_201_CREATED)

    return Response(file_serializer.errors, status=status.HTTP_400_BAD_REQUEST)


  &#xA;

  tasks.py

  &#xA;

  def parse_arguments(filename):
import argparse
parser = argparse.ArgumentParser()

new_filename = filename.lstrip('v')

parser.add_argument("audio_path")
parser.add_argument("target_path")

args = parser.parse_args([f'EmotionTalk/AI_emotion_recognizer/recordings/{filename}',
                          f'EmotionTalk/AI_emotion_recognizer/recordings/{new_filename}'])
audio_path = args.audio_path
target_path = args.target_path

if os.path.isfile(audio_path) and audio_path.endswith(".wav"):
    if not target_path.endswith(".wav"):
        target_path += ".wav"
    convert_audio(audio_path, target_path)
    return target_path
else:
    raise TypeError("The audio_path file you specified isn't appropriate for this operation")


  &#xA;

  parse_arguments is called from recognize_emotion

  &#xA;

• shell scripting no such file or directory

  15 mars 2018, par Toto Tata

  I wrote a shell script that calls the ffmpeg tool but when I run it, it says No such file or directory yet it does !

  Here is my script :

  #!/bin/bash
  
  
  
  MAIN_DIR="/media/sf_data/pipeline"
  
  
  
  FFMPEG_DIR="/media/sf_data/livraison_transcripts/ffmpeg-git-20180208-64bit-static"
  
  
  
  for file in MAIN_DIR/audio_mp3/*.mp3;
  
  do
  
      cp -p file FFMPEG_DIR;
  
  done
  
  
  
  for file in FFMPEG_DIR/*.mp3;
  
  do
  
      ./ffmpeg -i ${file%.mp3}.ogg
  
      sox $file -t raw --channels=1 --bits=16 --rate=16000 --encoding=signed-
  
  integer --endian=little ${file%.ogg}.raw;
  
  done
  
  
  
  for file in FFMPEG_DIR/*.raw;
  
  do
  
      cp -p file MAIN_DIR/pipeline/audio_raw/;
  
  done

  and here is the debug response :

  cp: cannot stat ‘file’: No such file or directory
  
  ./essai.sh: line 14: ./ffmpeg: No such file or directory
  
  sox FAIL formats: can't open input file `FFMPEG_DIR/*.mp3': No such file or 
  
  directory
  
  cp: cannot stat ‘file’: No such file or directory

  FYI I’m running CentOS7 on VirtualBox

  Thank you