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• ffmpeg does not exit when pipe is closed ?

  9 juin 2024, par Thomas

  If this has already been brought up, I apologize. This is part of a software tuner package I am writing as a POC. It is used by Plex Media Server. For the most part, it works with good picture quality but leaves ffmpeg processes when the User clicks "Stop" or closes the browser, I assume plex is closing the socket and that ffmpeg is not erroring out, but I am not sure. this is part of a function where I pass in a TCP Client Network Stream.

  


  TCPListener waits for a call, when it accepts one, it passes the network stream off to this function below. When the TCP Client disconnects, ffmpeg never exits, waitforexit never returns.

  


  ffmpeg args :

  


  -hide_banner -loglevel error -i {0} -c copy -f mpegts pipe:1


  


  c#

  


   string Arguments = string.Format(ffmpegStreamOptions, URL,Overlay);
 Process p = new Process();
 p.StartInfo.UseShellExecute = false;
 p.StartInfo.RedirectStandardOutput = true;
 p.StartInfo.RedirectStandardError = true;
 p.StartInfo.CreateNoWindow = true;
 p.StartInfo.FileName = "ffmpeg.exe"; // Replace with your executable path
 p.StartInfo.Arguments = Arguments;
 
 p.Start();
 var errorMemoryStream = new MemoryStream();
 var programTask = Task.WhenAny(
     p.StandardOutput.BaseStream.CopyToAsync(client_stream


  


  ),
p.StandardError.BaseStream.CopyToAsync(errorMemoryStream)
) ;

  


   p.WaitForExit(); //stuck here after the connection is broken and never exits.


  


  Any help would be appreciated
Thanks !

  


• Broken pipe error when writing video file with moviepy in azure [closed]

  6 juin 2024, par Lydia

  I have a program that retrieves images (png) and audio files from Azure Blob Storage to merge them into a video, which is then written to a temporary file and saved back to Blob Storage. I'm coding in Python and here is code i use to do that :

  


      def merge_image_audio(azure_connection_string):
        """Merge PNG with mp3 files."""
        # get Azure Container Client 
        container_client = get_container_client(azure_connection_string, AZURE_CONTAINER_NAME)
    
        # List blobs in the "temp" folder
        blob_list = container_client.list_blobs(name_starts_with="temp/")
        # Initialize lists to store blob data
        image_blob_data_list = []
        audio_blob_data_list = []
    
        # Download PNG and MP3 files and store blob data in the lists
        for blob in blob_list:
            if blob.name.endswith('.png'):
                image_blob_data_list.append(get_blob(azure_connection_string, blob, '.png'))
    
            elif blob.name.endswith(".mp3"):
                audio_blob_data_list.append(get_blob(azure_connection_string, blob, '.mp3'))
        
        clips = []
        # Merge images and audio files
        for image, audio in zip(image_blob_data_list, audio_blob_data_list):
            image_clip = ImageClip(image).set_duration(AudioFileClip(audio).duration)
            image_clip = image_clip.set_audio(AudioFileClip(audio))
            clips.append(image_clip)
        
        # concatenate all clips 
        final_clip = concatenate_videoclips(clips)
       
        with tempfile.NamedTemporaryFile(suffix=".mp4", delete=False) as video_temp_file:
                try: 
                    temp_file_name = video_temp_file.name
                    final_clip.write_videofile(temp_file_name, fps=24, codec='libx264', audio_codec='mp3')
                except OSError as e :
                    logging.error(f"Failed: {e}", exc_info=True)
        
    
        current_datetime = datetime.datetime.now().strftime("%Y-%m-%d_%H:%M")
        final_video_name = current_datetime + FINAL_VIDEO
        tmp_blob_client = get_blob_client(azure_connection_string, AZURE_CONTAINER_NAME, final_video_name)
        with open(temp_file_name, 'rb') as video_data:
            tmp_blob_client.upload_blob(video_data, overwrite=True)
        video_temp_file.close()


  


  I have containerized my code, and the Docker image works perfectly on my machine. However, once deployed on Azure, I encounter this problem with writing the video :

  


  Failed: [Errno 32] Broken pipe MoviePy error: FFMPEG encountered the following error while writing file /tmp/tmp81o22bka.mp4: b'' Traceback (most recent call last): File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 136, in write_frame self.proc.stdin.write(img_array.tobytes()) BrokenPipeError: [Errno 32] Broken pipe During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/site/wwwroot/function_app.py", line 102, in generate_simple_video image_clip.write_videofile(temp_file_name, fps=24) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 54, in requires_duration return f(clip, *a, **k) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 135, in use_clip_fps_by_default return f(clip, *new_a, **new_kw) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 22, in convert_masks_to_RGB return f(clip, *a, **k) File "/usr/local/lib/python3.8/site-packages/moviepy/video/VideoClip.py", line 300, in write_videofile ffmpeg_write_video(self, filename, fps, codec, File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 228, in ffmpeg_write_video writer.write_frame(frame) File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 180, in write_frame raise IOError(error) OSError: [Errno 32] Broken pipe MoviePy error: FFMPEG encountered the following error while writing file /tmp/tmp81o22bka.mp4: b''


  


  From my online research, everyone suggests that it’s a resource issue (lack of RAM and CPU). I increased these resources in the Azure Function App configuration, but I still face the same problem.

  


  I took a step-by-step approach to check for compatibility issues with the MoviePy function. I created a small 30-second video without audio, and it worked. Then, I added more options such as more images, audio, etc., but it failed.

  


  I suspected a timeout issue knowing that azure function app has a 5 min timeout that can be increased to 10 min in the consumption plan, but even with an execution time of one minute only it still fails.

  


  I am out of ideas to test and really need help.

  


  Thank you in advance.

  


• Broken pipe when writing video file with moviepy in azure [closed]

  5 juin 2024, par Lydia

  I have a program that retrieves images (png) and audio files from Azure Blob Storage to merge them into a video, which is then written to a temporary file and saved back to Blob Storage. I'm coding in **Python **and here is the function I use from MoviePy :
final_clip.write_videofile(temp_file_name, fps=24, codec='libx264', audio_codec='mp3')
I have containerized my code, and the **Docker **image works perfectly on my machine. However, once deployed on Azure, I encounter this problem with writing the video :

  


  Failed: [Errno 32] Broken pipe MoviePy error: FFMPEG encountered the following error while writing file /tmp/tmp81o22bka.mp4: b'' Traceback (most recent call last): File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 136, in write_frame self.proc.stdin.write(img_array.tobytes()) BrokenPipeError: [Errno 32] Broken pipe During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/home/site/wwwroot/function_app.py", line 102, in generate_simple_video image_clip.write_videofile(temp_file_name, fps=24) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 54, in requires_duration return f(clip, *a, **k) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 135, in use_clip_fps_by_default return f(clip, *new_a, **new_kw) File "", line 2, in write_videofile File "/usr/local/lib/python3.8/site-packages/moviepy/decorators.py", line 22, in convert_masks_to_RGB return f(clip, *a, **k) File "/usr/local/lib/python3.8/site-packages/moviepy/video/VideoClip.py", line 300, in write_videofile ffmpeg_write_video(self, filename, fps, codec, File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 228, in ffmpeg_write_video writer.write_frame(frame) File "/usr/local/lib/python3.8/site-packages/moviepy/video/io/ffmpeg_writer.py", line 180, in write_frame raise IOError(error) OSError: [Errno 32] Broken pipe MoviePy error: FFMPEG encountered the following error while writing file /tmp/tmp81o22bka.mp4: b''


  


  From my online research, everyone suggests that it’s a resource issue (lack of RAM and CPU). I increased these resources in the Azure Function App configuration, but I still face the same problem.

  


  I took a step-by-step approach to check for compatibility issues with the MoviePy function. I created a small 30-second video without audio, and it worked. Then, I added more options such as more images, audio, etc., but it failed.

  


  I suspected a timeout issue, but even with an execution time of one minute only, it still fails.

  


  I am out of ideas to test and really need help.

  


  Thank you in advance.