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• FFmpeg av_interleaved_write_frame invalid parameter -22

  21 octobre 2017, par Frank Natoli

  Windows 7 64 bit environment. C# Windows Forms application calling FFmpeg libraries through C++ bridge DLL including avcodec-57.dll, avformat-57.dll, avutil-55.dll, swresample-2.dll and swscale-4.dll to write MPEG-4 file using H.264/MPEG-4 AVC codec. When writing a single MP4 file, never a problem. When writing multiple MP4 files concurrently, via multiple C# threads, occasionally get av_interleaved_write_frame failure -22 which is invalid parameter on one or two but never all files. Needless to say, the parameters never change. Does FFmpeg use temporary files ? Is it possible that there is a fratricidal effect when using the same DLLs to write multiple files concurrently ?
  Edit : placed mutex at entry/exit to my write frame function, see source below, and can no longer reproduce the problem. It would appear something about FFmpeg is not thread-safe.

  extern "C" __declspec(dllexport) int ffmpeg_write_video_frame(FFMPEG_CONTEXT *ffmpegContext, uint8_t *frameBuffer)
  
  {
  
  #ifdef SINGLE_THREAD
  
      WaitForSingleObject(hMutex, INFINITE);
  
  #endif
  
      AVFrame *frame = ffmpeg_get_video_frame(&ffmpegContext->video, frameBuffer);
  
      if (frame == NULL)
  
      {
  
          MessageBox(GetActiveWindow(), "ffmpeg_get_video_frame returned NULL", "ffmpeg_write_video_frame", MB_OK);
  
  #ifdef SINGLE_THREAD
  
          ReleaseMutex(hMutex);
  
  #endif
  
          return(-1);
  
      }
  
  
  
      AVPacket pkt = { 0 };
  
      av_init_packet(&pkt);
  
  
  
      // encode the image
  
      int got_packet = 0;
  
      int result = avcodec_encode_video2(ffmpegContext->video.avCodecContext, &pkt, frame, &got_packet);
  
      if (result < 0)
  
      {
  
          char text[256];
  
          sprintf_s(text, sizeof(text), "avcodec_encode_videos failure=%d", result);
  
          MessageBox(GetActiveWindow(), text, "ffmpeg_write_video_frame", MB_OK);
  
  #ifdef SINGLE_THREAD
  
          ReleaseMutex(hMutex);
  
  #endif
  
          return(result);
  
      }
  
  
  
      // if the encoder has produced an output packet
  
      if (got_packet)
  
      {
  
          result = ffmpeg_write_frame(ffmpegContext->avFormatContext, &ffmpegContext->video.avCodecContext->time_base, ffmpegContext->video.avStream, &pkt);
  
          if (result < 0)
  
          {
  
              char text[256];
  
              sprintf_s(text, sizeof(text), "ffmpeg_write_frame failure=%d", result);
  
              MessageBox(GetActiveWindow(), text, "ffmpeg_write_video_frame", MB_OK);
  
  #ifdef SINGLE_THREAD
  
              ReleaseMutex(hMutex);
  
  #endif
  
              return(result);
  
          }
  
      }
  
  #ifdef SINGLE_THREAD
  
      ReleaseMutex(hMutex);
  
  #endif
  
      return (0);
  
  }
  
  
  
  extern "C" int ffmpeg_write_frame(AVFormatContext *fmt_ctx, const AVRational *time_base, AVStream *st, AVPacket *pkt)
  
  {
  
      /* rescale output packet timestamp values from codec to stream timebase */
  
      av_packet_rescale_ts(pkt, *time_base, st->time_base);
  
      pkt->stream_index = st->index;
  
  
  
      /* Write the compressed frame to the media file. */
  
  #if 0
  
      log_packet(fmt_ctx, pkt);
  
  #endif
  
      int result = av_interleaved_write_frame(fmt_ctx, pkt);
  
      if (result < 0)
  
      {
  
          char text[256];
  
          sprintf_s(text, sizeof(text), "av_interleaved_write_frame failure=%d", result);
  
          MessageBox(GetActiveWindow(), text, "ffmpeg_write_frame", MB_OK);
  
      }
  
      return(result);
  
  }

• FFMPEG S3 AWS Laravel Unable to check existence

  18 avril 2023, par Moomen Aldahdouh

  the error in logs laravel file
[2023-04-18 14:11:22] production.ERROR : Unable to check existence for : videos/643ea50862566/643ea50862566_0_300_%05d.ts "exception" :"[object] (League\Flysystem\UnableToCheckFileExistence(code : 0) : Unable to check existence for : videos/643ea50862566/643ea50862566_0_300_%05d.ts at C :\inetpub\mysite\vendor\league\flysystem\src\UnableToCheckExistence.php:19)
[stacktrace]

  


  I'm trying to upload a video on S3 service using Laravel FFMPEG and convert the video to multi-resolution after adding Frames, the error appears on the server, but on localhost not appear, and working very well locally.

  


  `FFMpeg::fromDisk('s3')//uploads
    ->open($this->data["storage_path_full"])
        ->exportForHLS()
        ->addFormat($lowBitrate, function ($media) {
            $media->addFilter('scale=256:144'); 
        })
        ->addFormat($superLowBitrate, function ($media) {
            $media->addFilter('scale=426:240'); 
        })
        ->addFormat($midBitrate, function ($media) {
            $media->addFilter('scale=480:360'); 
        })
        ->addFormat($superMidBitrate, function ($media) {
            $media->addFilter('scale=640:480'); 
        })
        ->addFormat($highBitrate, function ($media) {
            $media->addFilter('scale=1280:720'); 
        })
        ->addFormat($superHighBitrate, function ($media) {
            $media->addFilter('scale=1920:1080'); 
        })
        ->toDisk('s3')
        ->save($this->data["storage_path_video"]);`


  


• Application won't work after disconnecting from RDP [closed]

  12 juillet 2023, par Duri Eun

  The problem is that my Java Script runs perfectly fine when I have a connection with RDP to my Windows Server but when I disconnect (Clicking X) as title says my Script wont work as expected.

  


  It is recieving the requests from my website but can't do the tasks properly such as FFMpeg.

  


  


  Error adding banner to the video : Error : ffmpeg exited with code 1 :
at ChildProcess. (C :\Users\durieun02\Desktop\server\node_modules\fluent-ffmpeg\lib\processor.js:182:22)
at ChildProcess.emit (node:events:513:28)
at ChildProcess._handle.onexit (node:internal/child_process:291:12)

  


  


  This is just an explanation error, in reality my process is not even working.

  


  And such more errors like this when I am disconnected, The whole point of me opening a VM was to keep my actual PC offline while server would run for me in the background.

  


  I have also tried running my Script as a background process but it didn't worked either. It still somehow didn't have the permissions or something, not really sure why.

  


  I also edited gpedit.msc and Edited necessary things such as "Session Time Limits" but its not revelant at all since my session is not turning off but rather function don't work properly when RDP is not connected.

  


  I have also trying running it as a scheduled task and windows service, the problem is still same, the script runs but its not working as expected, my website esentiially returns the errors.

  


  Thanks for the helps, I hope we can find a solution for all.