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• Anomalie #2713 : Gestion des auteurs - Bugs

  18 mai 2012, par Julien -

  ben non ! (re-testé en 19418) En fait, voir capture d’écran : auteur6.png : J’ai une ligne vide initiale : celle-ci ne pose pas de pb en effet. J’ai une autre ligne vide entre rubrique1 et rubrique2 : c’est celle-ci qui pose pb. Elle ajoute un élément vide, 1ere chose, et à l’enregistrement, (...)

• Playback drops frames or stutter on good hardware [closed]

  30 décembre 2023, par Lemonek

  I'm planning to use TDARR and tring to prevent any issues before with (re)encoding. And I have stumbled on issue with one TV Show - recently I have downloaded refreshed old show but playback stutters on TV or drops frames (few frames every few secs - so video plays nicely but suddenly few frames are dropeed and then for next few secs it playsnicely - no issues with sound)

  


  I guess this particular video has some options which causes issues or I dont know but here are some facts I have gathered (ffprobe -v quiet -print_format json -show_format -show_streams) :

  


  

  1. The TV is capable of playing FullHD HECV 10bit smoothly https://pastebin.com/0efSGjk9

  


  2. Original video stutters https://pastebin.com/vvLn8y4a

  


  3. Converted video (QSV) stutters (linux/ffmpeg https://pastebin.com/XbazLEft
Below cutout part of script parameters for converting - $FPS is supplied as without it ffmpeg does not create I Frames but that is not a problem here)

  


  


          -hide_banner -y -init_hw_device qsv:hw \
        -hwaccel qsv -hwaccel_output_format qsv \
        -i "$FILENAME_BACK" \
        -map 0:v:0 -map 0:a:0 \
        -c:v hevc_qsv -preset slow -global_quality 22 -g $FPS\
        -c:a copy \
        -movflags faststart "$FILENAME_OUTPUT"


  


  

  4. Converted video (NVENC) plays nicely (win/handbrake) https://pastebin.com/HbBNMZvT

  


  


  In the end I wish I could create "safe" parameters list which I will supply to TDARR and not to worry about issues while converting videos.

  


  Forgot to mention - Hardware on which Im planning to mass encode has Intel proc with QSV capabilities - I'm not planning to encode on NV.

  


  If needed - I can provide any other information.

  


• swscale/lut3d : add 3DLUT dispatch system

  29 novembre 2024, par Niklas Haas

  swscale/lut3d : add 3DLUT dispatch system
  This is a lightweight wrapper around the underlying color management system,
  
  whose job it is merely to manage the 3DLUT state and apply them to the frame
  
  data. This is where we might add platform-specific optimizations in the future.
  I also plan on adding support for more pixel formats in the future. In
  
  particular, we could support YUV or XYZ input formats directly using only
  
  negligible additional code in the 3DLUT setup functions. This would eliminate
  
  the major source of slowdown, which is currently the roundtrip to RGBA64.
  

  • [DH] libswscale/Makefile
  • [DH] libswscale/lut3d.c
  • [DH] libswscale/lut3d.h