Recherche avancée

Sur d’autres sites (4819)

• How can I display the frame got by FFmpeg cuvid decoder without copy to host memory ?

  21 septembre 2019, par hefty

  Nowadays I am working on a video display program using FFmpeg to decode the frames. For h264 input, I chose h264_cuvid to decode and get decoded AVFrame store in Nvidia video card’s device memory.
  
  Now I am using some inefficient way to display the frame by copying the hardware frame to host memory and then display :

  avcodec_receive_frame(decode_ctx, hw_frame); // Get decoded hardware frame that store in device memory.
  
  
  
  av_hwframe_transfer_data(sw_frame, hw_frame, flag); // Copy the hardware frame to the host memory.
  
  
  
  //...some code to scale and display the sw_frame.

  I want to display the hw_frame by Direct3D surface directly but I don’t know how to access the data in hw_frame and copy the pixel data to a D3D surface natively (without accessing the host memory).
  
  What I know is that the hw_frame’s data[0] and data[1] are CUdeviceptr pointing to the NV12 data store in device memory, anyone knows how to use the CUdeviceptr to transfer the data to a D3D surface through the device memory and display ?

• How to get converted files from FFMPEG without storing converted file to folder

  20 août 2020, par Rutu

  Hey guys i am newbie to node and ffmpeg,

  


  Right now i am working on getting different resolution of video with ffmpeg.
Its working fine i am getting new converted video.
But my question is after original file get converted, new files are getting store in same folder where original file exists.

  


  Can some please please let me know how to not to store converted files into the server ?
Or its will automatically store video to the folder ?

  


  Please help, any help will be appreciated.
Thanks in advance

  


  Below is my code

  


      const outOptions: any = VIDEO_OPTIONS.OUTPUT.FFMPEG_OPTIONS[format];
    const outPath = pathJoin(dirname(url), `${getFileName(url)}_${outOptions.height}p_${outOptions.bitRate}_${outOptions.fps}fps${VIDEO_OPTIONS.OUTPUT.EXTENSION}`);
    await runFfmpeg(['-i', pathJoin(__dirname, '..', url),
        '-vf', 'scale=-2:' + outOptions.height, '-c:v', 'h264',
        '-profile:v', 'baseline', '-r', outOptions.fps, '-g', outOptions.fps * 2,
        '-b:v', outOptions.bitRate, '-f', VIDEO_OPTIONS.OUTPUT.FORMAT, pathJoin(__dirname, '..', outPath), '-y']);
    return outPath;
}

This is where ffmpeg command fires
  let ffmpeg = spawn(ffmpeg, ffmpegOptions);


  


• End of Piwik Mobile 1 – Focus is on Piwik Mobile 2

  2 septembre 2014, par Piwik Core Team — Community, Piwik Mobile Releases

  More than four years after its initial release, we will remove Piwik Mobile 1 from the Apple App Store and Google Play Store in one week. During that time the app was downloaded more than 60.000 times with an average rating of 4.6 and over 2000 ratings. Thank you to our community of users for all of this !

  Why we must focus on Piwik Mobile 2

  Unfortunately we do not have the resources to maintain Piwik Mobile 1 to be compatible with the latest iOS and Android updates (namely iOS 8 and Android L). The last update of Piwik Mobile 1 was over one year ago and the underlying framework, which we are using to develop the app, is nearly two years old. Making the code compatible with the current version of the underlying framework to support the latest platform versions would take us many weeks. As a little background : From the beginning Piwik Mobile 1 has been a free app and was developed by a single person Thomas in his spare time who is now focussing on Piwik Mobile 2.

  Can I still get it ?

  We are announcing this today so you get a chance to install the app via the Apple App Store and Google Play Store while it is still available.

  If you are one of the 87% of our Piwik Mobile 1 users who are already using Android 4+ or iOS 7+ then you can install Piwik Mobile 2 (make sure you upgrade your Piwik platform to 1.12 or 2.x recommended).

  What happens after the app is removed ?

  If you have already installed the app it won’t be removed from your device and you will still be able to use it. Android users can still download Piwik Mobile 1 but we cannot guarantee it will work on all devices. Lastly the code our free software is available on GitHub and you can build it from the source if you have to.

  The future of Piwik Mobile

  Piwik Mobile version 2.1 is currently in beta testing phase. This new version includes several useful new features such as support for Segmentation. If you use Android, give it a try !