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• Hardware acceleration FFMPEG not speeding up rendering at the moment

  13 août 2021, par AlphaDjango

  I currently have ffmpeg running on a computer (ubuntu server 20.04) with a nvidia MSI GTX 1660 6GB GAMING X TWIN FORZ 7 GRAPHICS CARD and a Ryzen 5 3600 cpu. I have installed the nvidia drivers for linux for it.

  


  Currently when enabling and disabling hardware acceleration the rendering takes the same amount of time which is around 1 minute to render per 1 minute of footage.

  


  When using a similar setup in davinci resolve it takes 1/4 of the time to apply similar background effects and concating the clips which makes me question if I am using hardware acceleration of if my ffmpeg command is not optimised for it ?

  


  This is the code which takes in around 50 mp4 clips and joins them together, scales them in size and applies a background blur on the sides of clips

  


  ffmpeg  -hwaccel cuda  -f concat -safe 0 -i /home/anon/project/MEDIAFILES/work_ffmpeg_space/concat_file_user_root_projectId_1.txt  -s 1920x1080 -filter_complex '[0:v]scale=ih*16/9:-1:flags=bicubic,boxblur=luma_radius=min(h\,w)/20:luma_power=2:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg];[bg][0:v]overlay=(W-w)/2:(H-h)/2,crop=h=iw*9/16' -af aselect=concatdec_select,aresample=async=1  /home/anon/project/MEDIAFILES/created_videos/finalvideo_user_root_projectId_1.mp4


  


  Any tips or ways to optimise the code to use hardware acceleration will be greatly appreciated !

  


  This is my ffmpeg configuration

  


    ffmpeg version N-103221-gc3ef9e0277 Copyright (c) 2000-2021 the FFmpeg developers
  built with gcc 9 (Ubuntu 9.3.0-17ubuntu1~20.04)
  configuration: --pkg-config-flags=--static --enable-nonfree --enable-gpl --enable-version3 --enable-libmp3lame --enable-libvpx --enable-libopus --enable-opencl --enable-libxcb --enable-opengl --enable-nvenc --enable-vaapi --enable-vdpau --enable-ffplay --enable-ffprobe --enable-libxvid --enable-libx264 --enable-libx265 --enable-openal --enable-openssl --enable-cuda-nvcc --enable-cuvid --extra-cflags=-I/usr/lcal/cuda/include --extra-ldflags=-L/usr/local/cuda/lib64 --extra-libs=-lpthread
  libavutil      57.  3.100 / 57.  3.100
  libavcodec     59.  4.101 / 59.  4.101
  libavformat    59.  4.101 / 59.  4.101
  libavdevice    59.  0.100 / 59.  0.100
  libavfilter     8.  1.103 /  8.  1.103
  libswscale      6.  0.100 /  6.  0.100
  libswresample   4.  0.100 /  4.  0.100
  libpostproc    56.  0.100 / 56.  0.100


  


• Revision 33048 : Un flv n’a pas forcément de vidéo associée ... on écrit les metadatas ...

  18 novembre 2009, par kent1@… — Log

  Un flv n’a pas forcément de vidéo associée ... on écrit les metadatas avant pour être sûr

• Get bitmap / thumbnail from a streaming video with format like .mp4, .3gp in Android ?

  12 janvier 2016, par Androzr

  I am working on ListView which on item click redirecting to a video link.
  I explain my problem :

  I have three types of videos :

  • Youtube
  • Dailymotion
  • Other formats from streaming video like this one : Video Link

  I am trying to get thumbnail to get it in my ImageView from my item of my ListView. I encoutered a problem, I get Youtube thumbnail, Dailymotion thumbnail but I couldn’t get thumbnail for other formats.

  I tried to use MediaMetaDataRetriever class but nothing happens.

  Here is the line where I tried to get my bitmap :

  We are in my VideoAdapter class in the getView method. holder is my ViewHolder class and thumbVideo is my ImageView.

  Here is differents lines I tried :

  holder.thumbVideo.setImageBitmap(createVideoThumbnail(m_Context, Uri.parse(m_Video.getM_Preview())));

  m_Video is my Video class and the method getM_Preview() is getting the link of video thumbnail.

  Here is my createVideoThumbnail(Context context, Uri uri) method :

      public Bitmap createVideoThumbnail(Context context, Uri uri) {
  
      Bitmap bitmap = null;
  
      MediaMetadataRetriever retriever = new MediaMetadataRetriever();
  
      try { 
  
          retriever.setDataSource(context, uri);
  
          bitmap = retriever.getFrameAtTime(-1);
  
      } catch (RuntimeException ex) {
  
      } finally { 
  
          try { 
  
              retriever.release();
  
          } catch (RuntimeException ex) {
  
          } 
  
      } 
  
      return bitmap;
  
  }

  I am looking an answer for 4 days. If anybody know how I can do, it’ll be helpful