Recherche avancée

Sur d’autres sites (5354)

• How to compress base64 decoded video data using ffmpeg in django

  23 mai 2021, par Sudipto Sarker

  I want to upload the video/audio file in my django-channels project. So I uploaded video(base64 encoded url) from websocket connection. It is working fine. But now after decoding base64 video data I want to compress that video using ffmpeg.But it showing error like this.
''Raw : No such file or directory''
I used 'AsyncJsonWebsocketConsumer' in consumers.py file.Here is my code :
consumers.py :

  


  async def send_file_to_room(self, room_id, dataUrl, filename):
        # decoding base64 data
        format, datastr = dataUrl.split(';base64,')
        ext = format.split('/')[-1]
        file = ContentFile(base64.b64decode(datastr), name=filename)
        print(f'file: {file}')
        # It prints 'Raw content'
        output_file_name = filename + '_temp.' + ext
        ff = f'ffmpeg -i {file} -vf "scale=iw/5:ih/5" {output_file_name}'
        subprocess.run(ff,shell=True) 


  


  May be here ffmpeg can not recognize the file to be compressed. I also tried to solve this using post_save signal.

  


  signals.py :

  


  @receiver(post_save, sender=ChatRoomMessage)
def compress_video_or_audio(sender, instance, created, **kwargs):
    print("Inside signal")
    if created:
        if instance.id is None:
            print("Instance is not present")
        else:
            video_full_path = f'{instance.document.path}'
            print(video_full_path)
   // E:\..\..\..\Personal Chat Room\media\PersonalChatRoom\file\VID_20181219_134306_w5ow8F7.mp4
            output_file_name = filename + '_temp.' + extension
            ff = f'ffmpeg -i {filename} -vf "scale=iw/5:ih/5" {output_file_name}'
            subprocess.run(ff,shell=True)
            instance.document = output_file_name
            instance.save()


  


  It is also causing "E :..\Django\New_Projects\Personal : No such file or directory".
How can I solve this issue ? Any suggetions.It will be more helpful if it can be compressed before saving the object in database. Thanks in advance.

  


• Force a vbscript to open command prompt in 64bit instead of 32bit

  26 juin 2015, par Arvo Bowen

  I have been trying to get this script to work all day !

  Here are some facts about my situation...

  • I have a program named "ffmpeg.exe" in my "C :\Windows\System32\" folder.
  • I DO NOT have that program in my "C :\Windows\SysWOW64\" folder.

  Currently this is the script I have...

  Option Explicit
  
  
  
  Dim oFSO, oShell, sCommand
  
  Dim sFilePath, sTempFilePath
  
  
  
  Set oFSO = CreateObject("Scripting.FileSystemObject")
  
  
  
  sFilePath = "C:\test\in_video.mkv"
  
  sTempFilePath = "C:\test\out_video.mp4"
  
  
  
  sCommand = "%comspec% /k ffmpeg -n -i """ + sFilePath + """ -c:v copy -c:a copy """ + sTempFilePath + """"
  
  WScript.Echo sCommand
  
  Set oShell = WScript.CreateObject("WScript.Shell")
  
  oShell.Run sCommand, 1, True
  
  Set oShell = Nothing
  
  
  
  Set oFSO = Nothing

  If I run this script manually at a command prompt then it seems to work just fine. But if I let another app run it (for example in this case uTorrent), it runs the script as expected but when it tries to process the oShell.Run command it runs that in a 32bit environment ! Then I get this...
  

  If I try to open up a new command prompt (nothing special) i seems to default to a 64bit environment and then I can type "ffmpeg" and it shows me the help content as expected.

  So for some reason I can’t get the script to run applications (specifically CMD) in the 64bit environment. Anyone know how I can achieve this ?

  ---

  Update

  Seems that my script is in fact being ran in 32bit mode ! Even though the script title bar says "C :\Windows\System32\cscript.exe", which is a 64bit environment !!

  I used the following script to determine that it was running in a 32bit environment...

  Dim WshShell
  
  Dim WshProcEnv
  
  Dim system_architecture
  
  Dim process_architecture
  
  
  
  Set WshShell =  CreateObject("WScript.Shell")
  
  Set WshProcEnv = WshShell.Environment("Process")
  
  
  
  process_architecture= WshProcEnv("PROCESSOR_ARCHITECTURE") 
  
  
  
  If process_architecture = "x86" Then    
  
      system_architecture= WshProcEnv("PROCESSOR_ARCHITEW6432")
  
  
  
      If system_architecture = ""  Then    
  
          system_architecture = "x86"
  
      End if    
  
  Else    
  
      system_architecture = process_architecture    
  
  End If
  
  
  
  WScript.Echo "Running as a " & process_architecture & " process on a " _ 
  
      & system_architecture & " system."

• How can i use ffmpeg to add voice note to another mp3 at specific time , let everything play without reducing the original mp3

  29 juin 2020, par Adike maduabuchi

  I have used some code which does not give me what I want, I used PHP shell to execute the code

  


               $var = 'ffmpeg -y -i ' . $voice_note_tag . ' -i ' . $original_music_path . '  -filter_complex "[0]asplit[a][b]; [a]atrim=duration=' . $time_come_vioce . ',volume=\'1-max(0*(t-1),0)\':eval=frame[pre];  [b]atrim=start=' . $time_come_vioce . ',asetpts=PTS-STARTPTS[song];  [song][1]amix=inputs=2:duration=first:dropout_transition=2[post]; [pre][post]concat=n=2:v=0:a=1[mixed]"  -map "[mixed]" ' . $output . ' 2>&1';
                            shell_exec($var);