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• Real-Time Buffer Too Full (FFMPEG)

  25 janvier 2018, par Nimble

  So I’ve been having this issue with ffmpeg, it has been a journey getting the hardware and command to actually do what I want, but I still have one problem.

  Sometimes when I’m recording I just start dropping frames like crazy, this can be after an hour of recording or even ten hours in... Everything will be working fine and then suddenly I’ll start dropping frames due to "real-time buffer too full or near too full". This happens regardless of how low I put the bitrate, and the buffer size is high as it will allow, eventually I’ll just start dropping frames. Almost seems like it could be like a power saving feature kicking in but it’s too inconsistent it seems. Like I said sometimes I can go 10 hours without having this issue.

  Any ideas ?

  Here is my block of code :

  ffmpeg -guess_layout_max 0 -y -f dshow -video_size 3440x1440 -rtbufsize 2147.48M -pixel_format nv12 -framerate 200 ^
  
  -i video="Video (00 Pro Capture HDMI 4K+)":audio="SPDIF/ADAT (1+2) (RME Fireface UC)" -map 0:0,0:1 -map 0:1 ^
  
  -preset: llhp -codec:v h264_nvenc -pix_fmt nv12 -b:v 250M -maxrate:v 250M -minrate:v 250M -bufsize:v 250M -b:a 320k ^
  
  -ac 2 -r 100 -async 1 -vsync 1 -segment_time 600 -segment_wrap 9 -f segment C:\Users\djcim\Videos\PC\PC%02d.mp4 ^
  
  -guess_layout_max 0 -f dshow -rtbufsize 2000M -i audio="Analog (3+4) (RME Fireface UC)" -map 1:0 -b:a 320k -ac 2 ^
  
  -af "adelay=200|200" -segment_time 600 -segment_wrap 9 -f segment C:\Users\djcim\Videos\PC\Voices\Theirs\TPC%02d.wav ^
  
  -guess_layout_max 0 -f dshow -rtbufsize 2000M -i audio="Analog (5+6) (RME Fireface UC)" -map 2:0 -b:a 320k -ac 2 ^
  
  -af "adelay=825|825" -segment_time 600 -segment_wrap 9 -f segment C:\Users\djcim\Videos\PC\Voices\Mine\MPC%02d.wav

  Here is the error, it repeated around 300 times before locking up ffmpeg forcing my to quit before starting the recording again :

  [dshow @ 0000019a596bdcc0] real-time buffer [Video (00 Pro Capture HDMI 4K+)] [video input] too full or near too full (62% of size: 2147480000 [rtbufsize parameter])! frame dropped!

• lavfi/deinterlace_vaapi : fix can't show full option information.

  16 janvier 2018, par Jun Zhao

  lavfi/deinterlace_vaapi : fix can't show full option information.
  use ffmpeg -h filter=deinterlace_vaapi can't get full help information,
  
  the root cause is not setting the flags fileld in options.
  Signed-off-by : Jun Zhao <jun.zhao@intel.com>
  
  Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
  

  • [DH] libavfilter/vf_deinterlace_vaapi.c

• Android FFMPEG + SDL2 Full screen issue (Video)

  15 janvier 2018, par byungkyu

  I make video player, use ffmpeg, SDL2.
  when I compile ffmpeg, I add —disable-filters, and I scale video using SDL.

  VideoPicture *vp;
  
  
  
  vp = &is->pictq[is->pictq_windex];
  
  Uint32 flags(SDL_GetWindowFlags(vp->screen));
  
  flags ^= SDL_WINDOW_FULLSCREEN_DESKTOP;
  
  SDL_SetWindowFullscreen(vp->screen, flags);
  
  int w = 640, h = 480; // TODO: UPDATE ME! ;)
  
  if ((flags & SDL_WINDOW_FULLSCREEN_DESKTOP) != 0)
  
  {
  
      LOGI("toggleFullscreen 1189");
  
      SDL_SetHint(SDL_HINT_RENDER_LOGICAL_SIZE_MODE, "overscan");
  
      SDL_SetHint(SDL_HINT_RENDER_SCALE_QUALITY, "linear");
  
      SDL_RenderSetLogicalSize(vp->renderer, w, h);
  
  }
  
  else
  
  {
  
      LOGI("toggleFullscreen 1195");
  
      SDL_SetWindowSize(vp->screen, w, h);
  
  }

  but this code show black bar, upper side and down side.
  how to make full screen, no black, and expand video height ?