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• Converted video is not played in Firefox

  20 juillet 2023, par Kiten

  I have a code that accepts the video file from the client converts it and saves it on the server with .mp4 extension. Video processing is made using fluent-ffmpeg. Here is the code :

  


  ffmpeg()
  .size('360x?')
  .videoCodec('libx264')
  .output()
  .on("end", () => {
    console.log(`Video saved with resolution 360`);
    res.json('Uploaded')
  })
  .on("error", (error) => {
    console.error(
      `Error saving video with resolution 360:`,
      error
    );
    res.status(500).json({ message: "Conversion error" });
  })
  .run();


  


  The problem is that the resulting files are not played in the Firefox browser (but work in Microsoft Edge and Google Chrome).
Is it possible to change the parameters so that the resulting files are compatible with Firefox browser ?

  


• Qt WinRT App cannot access file permission denied

  23 février 2016, par Haris

  I need to develop WinRT App using Qt and FFMPEG, I build the ffmpeg for WinRT based on the instruction here and I am able to link the library with my project. Now I need to open a video file using avformat_open_input but it always giving me the output

  video decode error "Permission denied"

  Below is the relevant part of the code,

   int ret = avformat_open_input(&pFormatCtx, hls, NULL, NULL);
  
      if(ret != 0)
  
      {
  
          char errbuf[128];
  
          av_strerror(ret, errbuf, 128);
  
          qDebug()<<"video decode error"<code>

  From the above error it seems some permission issue, do I need to add any additional permission on AppxManifest.xml currently I am using default manifest which is created by Qt creator.

• extracting single frame FFmpeg Interop

  12 janvier 2016, par Jakub Wisniewski

  I am writing app (Windows Phone 8.1 Store App) that allows user to connect to IP Camera. I am using FFmpeg Interop library for ffmpeg which allows me to play eg. rtsp streams in media element. I need now a way to somehow extract a single frame from stream or from media element.

  I have tested other application wchih allows connecting to IP cameras - IP Centcom, and they have working snapshots only for mjpeg streams as far as I now (they were not working for rtsp). Becouse of that I belive that it is impossible or at very least very hard to export frame from media element.

  I have different question - if anyone has ever used FFmpeg Interop and would like to help/explain me how could I modify/extend FFmpegInteropMSS to add method called ’GetThumbnailForStream’ that would work similary to ’GetMediaStreamSource’ but would return single frame (bitmap or jpg) instead of MediaStreamSource ?

  Every help would be appreciated