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• Can't load MPEG file with MSE

  11 juillet 2019, par Léandre

  Here is my problem : I want to reproduce this example of MSE use, but when I change the mp4 file, it doesn’t work. I have this error :

  Failed to execute 'endOfStream' on 'MediaSource': The MediaSource's readyState is not 'open'. at SourceBuffer.<anonymous></anonymous>

  I saw here that I needed to fragment my mp4 file, wich I did. Here is my mp4 file header :

  [ftyp] size=8+28
  
     major_brand = mp42
  
     minor_version = 0
  
     compatible_brand = isom
  
     compatible_brand = iso2
  
     compatible_brand = avc1
  
     compatible_brand = mp41
  
     compatible_brand = mp42
  
  [moov] size=8+3841
  
     [mvhd] size=12+96

  And this is the mp4 file header of the file demo : (this file works)

  [ftyp] size=8+20
  
     major_brand = mp42
  
     minor_version = 1
  
     compatible_brand = mp42
  
     compatible_brand = avc1
  
     compatible_brand = iso5
  
  [moov] size=8+1871
  
     [mvhd] size=12+96
  
        timescale = 1000
  
        duration = 60095 

  Even when I change the minor value with MP4Box -brand mp42:1 fragmented-video.mp4, it doesn’t work.

  I also tried to separate video data and audio data ( view in FFMPEG H.264 encoding for HTML5 (and ultimately MPEG-DASH) ), but it didn’t solve the problem.

  (I tried on Chromium)

  If you have any ideas to solve this, it will be great !

  Thanks

• How to load data to be used for whisper

  26 juin 2023, par P.Bjur

  My eventual goal is to take an audio stream from twilio and give it to whisper. This is not going great so I am trying to convert the audio into the format that whisper expects and then save that to a file so that I can give it a listen and make sure everything has gone well. When I take the data from twilio and try to save it using the function below, I get the error below. Is there something obvious that I am doing wrong ?

  


      .run()
    ^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ffmpeg/_run.py", line 313, in run
    process = run_async(
              ^^^^^^^^^^
  File "/opt/homebrew/lib/python3.11/site-packages/ffmpeg/_run.py", line 284, in run_async
    return subprocess.Popen(
           ^^^^^^^^^^^^^^^^^
  File "/opt/homebrew/Cellar/python@3.11/3.11.4/Frameworks/Python.framework/Versions/3.11/lib/python3.11/subprocess.py", line 1026, in __init__
    self._execute_child(args, executable, preexec_fn, close_fds,
  File "/opt/homebrew/Cellar/python@3.11/3.11.4/Frameworks/Python.framework/Versions/3.11/lib/python3.11/subprocess.py", line 1883, in _execute_child
    self.pid = _fork_exec(
               ^^^^^^^^^^^
ValueError: embedded null byte


  


  def add_audio(audio_data: bytes):
    global buffer
    audio, err = ffmpeg \
        .input("pipe:", format='mulaw', acodec='pcm_mulaw', ar= 8000, ac=1) \
        .output("-", format="s16le", acodec="pcm_s16le", ar=16000, ac=1) \
        .run(cmd="ffmpeg", capture_stdout=True, capture_stderr=True, input=audio_data)


    # convert audio to numpy array
    audio = np.frombuffer(audio, np.int16).flatten().astype(np.float32) / 32768.0

    # add audio to buffer
    buffer = np.concatenate((buffer, audio))

    ffmpeg \
        .input(buffer, format='f32le', acodec='pcm_f32le', ac=1, ar=16000) \
        .output('test.wav') \
        .run() 


  


• How I can load testing my web application if I host it in Azure and Google Cloud

  29 décembre 2018, par Anirudha Gupta

  I am trying to stream the video on Youtube using FFmpeg. Earlier I have a preset which is used to stream at lower resolution.

  Now I want to send the video as it is. I am trying to use this code

  ./ffmpeg -re -i "C:\Users\Anirudha\Desktop\abc.mp4" -codec copy -f flv "rtmp://a.rtmp.youtube.com/live2/mykey1"

  I got this code from here https://www.wowza.com/docs/how-to-configure-security-using-wowza-streaming-engine-manager

  This code is working fine for Wowza but it’s shown running on youtube (in the command line) in Actual it’s not doing anything on the youtube website.

  Is there any way to send the file to youtube the file as it is, What I am looking for is I don’t want to do anything on file. Let the resolution same as it is.