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• App crashes on Google TV when playing MP4 videos

  14 avril 2023, par fab

  I am having problems with an Android app that was developed for me. The issue occurs when playing MP4 videos ; the app plays them correctly, but at some point, the app crashes and exits. I have been reviewing errors using Android Studio, and the only error that appears is the following :

  


  2023-04-14 00:45:45.846 7221-7650 SurfaceUtils com.app.X D connecting to surface 0xbf0d2808, reason connectToSurface(reconnect) 2023-04-14 00:45:45.848 7221-7654 ACodec com.app.X E [OMX.amlogic.avc.decoder.awesome2] setPortMode on output to DynamicANWBuffer failed w/ err -2147483648 2023-04-14 00:45:45.855 7221-7334 com.app.X com.app.X I get_buffer_dataspace_setting get_metadata return 0 dataspace:268500992 2023-04-14 00:45:45.875 7221-7334 NdkImageReader com.app.X D acquireImageLocked: Overriding buffer format YUV_420_888 to 0x11. 2023-04-14 00:45:45.877 7221-7334 com.app.X com.app.X I get_buffer_dataspace_setting get_metadata return 0 dataspace:268500992 2023-04-14 00:45:45.887 7221-7280 MediaCodec com.app.X D keep callback message for reclaim 2023-04-14 00:45:45.896 7221-7334 com.app.X com.app.X I get_buffer_dataspace_setting get_metadata return 0 dataspace:268500992 2023-04-14 00:45:45.914 7221-7334 com.app.X com.app.X I get_buffer_dataspace_setting get_metadata return 0 dataspace:268500992 2023-04-14 00:45:45.915 7221-7654 SurfaceUtils com.app.X D disconnecting from surface 0xbf0d2808, reason setNativeWindowSizeFormatAndUsage 2023-04-14 00:45:45.915 7221-7654 SurfaceUtils com.app.X D connecting to surface 0xbf0d2808, reason setNativeWindowSizeFormatAndUsage 2023-04-14 00:45:45.915 7221-7654 SurfaceUtils com.app.X D set up nativeWindow 0xbf0d2808 for 1920x1080, color 0x11, rotation 0, usage 0x402b00 2023-04-14 00:45:45.915 7221-7654 ACodec com.app.X W [OMX.amlogic.avc.decoder.awesome2] setting nBufferCountActual to 9 failed: -1010 2023-04-14 00:45:45.922 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.928 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.943 7221-7334 com.app.X com.app.X I get_buffer_dataspace_setting get_metadata return 0 dataspace:268500992 2023-04-14 00:45:45.954 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.960 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.962 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.969 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.979 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument 2023-04-14 00:45:45.986 7221-7654 ion com.app.X E ioctl c0084905 failed with code -1: Invalid argument

  


  One clarification is that the app is built with IONIC and Angular.

  


  The FFMPEG code that converts the video in golang is as follows :

  


  func ConvertVideoFile(inputFileName, outputFileName string) error { err := ffmpeg_go.Input(inputFileName). Filter("scale", ffmpeg_go.Args{"800:600"}). Output(outputFileName, ffmpeg_go.KwArgs{ "c:v": "libx264", "profile:v": "high", "level": "3.1", "pix_fmt": "yuv420p", "preset": "medium", "crf": "23", "b:v": "782k", "r": "25", "c:a": "aac", "b:a": "2k", "ar": "48000", "movflags": "+faststart", "max_muxing_queue_size": "1024", }, ). OverWriteOutput().ErrorToStdOut().Run() return err }

  


  Remove this error 2023-04-14 00:45:45.848 7221-7654 ACodec com.app.X E [OMX.amlogic.avc.decoder.awesome2

  


• how to allow a worker to run a ffmpeg command on heroku for my python/django app ?

  10 mars 2013, par GetItDone

  I've been stuck trying to figure this out for weeks. I previously asked a similar question found here but I never got any replies. I really cannot find any good documentation anywhere. All I need to do is use a worker (don't care what worker have django-celery and rq installed) to convert a file to flv when it is uploaded from a form. I was able to get this done easily locally, but after over a week I haven't been able to get it to work no matter what I have tried. I tried adding a tasks.py file for celery, or a worker.py file for rq, and I have no idea what else (if anything) needs to be done, such as in my settings.py or Procfile. My procfile looks like :

  web: gunicorn lftv.wsgi -b 0.0.0.0:$PORT
  
  celeryd: celery -A tasks worker --loglevel=info
  
  worker: python worker.py

  My requirements.txt showing what I have installed looks like this :

  Django==1.4.3
  
  Logbook==0.4.1
  
  amqp==1.0.6
  
  anyjson==0.3.3
  
  billiard==2.7.3.19
  
  boto==2.6.0
  
  celery==3.0.13
  
  celery-with-redis==3.0
  
  distribute==0.6.31
  
  dj-database-url==0.2.1
  
  django-celery==3.0.11
  
  django-s3-folder-storage==0.1
  
  django-storages==1.1.6
  
  gunicorn==0.16.1
  
  kombu==2.5.4
  
  pil==1.1.7
  
  psycopg2==2.4.5
  
  python-dateutil==1.5
  
  pytz==2012j
  
  redis==2.7.2
  
  requests==1.1.0
  
  rq==0.3.2
  
  six==1.2.0
  
  times==0.6

  The only thing relevant in my settings.py are as follows :

  BROKER_BACKEND = 'django'
  
  BROKER_URL = #For this I copy/pasted the code from my redistogo add-on from heroku. Not sure if correct
  
  BROKER_TRANSPORT_OPTIONS = {'visibility_timeout': 1800}

  Without trying to take up too much more space, my tasks.py looks like this :

  import subprocess
  
  
  
  @task
  
  def ffmpeg_conversion(input_file):
  
      converted_file = subprocess.call(input_file)
  
      return converted_file

  I use S3 to store my static and media files, and the upload works (adding uploads to my bucket), however no matter what I try the conversion never will. Is there a good tutorial for absolute beginners ? I followed the heroku redis tutorial, celery docs, rq docs, and whatever else I can find, and got the examples to work, but the worker will not execute the command from my view. For example one of the many things I tried :

  ...
  
  ffmpeg = "ffmpeg -i %s -acodec mp3 -ar 22050 -f flv -s 320x240 %s" % (sourcefile, targetfile)
  
  ffmpegresult = ffmpeg_conversion.delay(ffmpeg)
  
  ...

  or using rq

  ...
  
  q = Queue(connection=conn)
  
  result = q.enqueue(ffmpeg_conversion, ffmpeg)
  
  ...

  I seems like it should be simple, however I am completely self-taught and have never deployed a project whatsoever, and there just doesn't seem to be any good documentation or tutorial available for what I am trying to do. I can't judge whether I am completely off and completely missing something significant or relatively close to getting this to work. I really do appreciate any input whatsoever, this is driving me nuts. Thanks in advance.

• How to convert a Stream on the fly with FFMpegCore ?

  18 octobre 2023, par Adrian

  For a school project, I need to stream videos that I get from torrents while they are downloading on the server.
When the video is a .mp4 file, there's no problem, but I must also be able to stream .mkv files, and for that I need to convert them into .mp4 before sending them to the client, and I can't find a way to convert my Stream that I get from MonoTorrents with FFMpegCore into a Stream that I can send to my client.

  


  Here is the code I wrote to simply download and stream my torrent :

  


  var cEngine = new ClientEngine();

var manager = await cEngine.AddStreamingAsync(GenerateMagnet(torrent), ) ?? throw new Exception("An error occurred while creating the torrent manager");

await manager.StartAsync();
await manager.WaitForMetadataAsync();

var videoFile = manager.Files.OrderByDescending(f => f.Length).FirstOrDefault();
if (videoFile == null)
    return Results.NotFound();

var stream = await manager.StreamProvider!.CreateStreamAsync(videoFile, true);
return Results.File(stream, contentType: "video/mp4", fileDownloadName: manager.Name, enableRangeProcessing: true);


  


  I saw that the most common way to convert videos is by using ffmpeg. .NET has a package called FFMpefCore that is a wrapper for ffmpeg.

  


  To my previous code, I would add right before the return :

  


  if (!videoFile.Path.EndsWith(".mp4"))
{
    var outputStream = new MemoryStream();
    FFMpegArguments
        .FromPipeInput(new StreamPipeSource(stream), options =>
        {
            options.ForceFormat("mp4");
        })
        .OutputToPipe(new StreamPipeSink(outputStream))
        .ProcessAsynchronously();
    return Results.File(outputStream, contentType: "video/mp4", fileDownloadName: manager.Name, enableRangeProcessing: true);
}


  


  I unfortunately can't get a "live" Stream to send to my client.