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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


  


• FFmpeg Video Library Quick Review

  3 juillet 2019, par Rich_F

  I’m in need of reducing 18 videos so I can review them daily. I’d like to script some kind of compression or sampling using FFmpeg to not have to sit through 6 hours of video every day.

  What is the best way to review 6 hours of videos captured every day on SD cards ? The videos come in two cards, a 32 GB card ( 4 hours) and a 16 GB card ( 2 hours).

  Currently, I’m concatenating all videos and creating a screenshot every 3 seconds, which seems the longest I can go without missing something in the field of view (a vehicle will enter/leave). Still, this is thousands of images per card, and I select all, then preview and scroll down using page up/down. Any vehicle quickly appears in the thumbnails. This system isn’t bad, but I’m always inquisitive. I’m looking for more ways of sampling or seeing if any motion detection or frame analysis might register where I should be looking in my library of original captured videos.

  Options :

  1. Motion capture by analysis of frame by frame through trial and error on sensitivity to not measure wind on the bushes. This could be output to filename and time within the video (videos are captured 10 minutes long).

  2. Take my exported list of png files and string them together somehow into a slide show.

  3. Version 1 here, plus some retroactive capture of clips inside master clips.

  4. Some kind of compression. Again, I have to respect the 3-second max jump.

  Any other options that would be relatively easy to achieve without moving into any other software ? I’m trying to put the heavy lifting on the computer, as staring at videos is not something I’m finding I’ll be able to do for many days.

• configure : Make compilable with VS2015

  6 mars 2015, par Peter Tissen

  configure : Make compilable with VS2015
  So Visual Studio 2015 has some breaking changes regarding the C
  
  runtime. In short, they made C99 compatable runtime.
  
  Refer to http://blogs.msdn.com/b/vcblog/archive/2014/06/18/crt-features-fixes-and-breaking-changes-in-visual-studio-14-ctp1.aspx
  Made-Seriously-Happy : "Ronald S. Bultje" <rsbultje@gmail.com>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] configure