Recherche avancée

Sur d’autres sites (9437)

• Revision 198fa6d0a0 : Add Neon horizontal and vertical vp9_mbloop_filter - The vp9 mbfilter C code wi

  1er juillet 2013, par Frank Galligan

  Changed Paths :
   Modify /vp9/common/arm/neon/vp9_loopfilter_neon.asm

  
   Modify /vp9/common/vp9_rtcd_defs.sh

  
  
  Add Neon horizontal and vertical vp9_mbloop_filter

   The vp9 mbfilter C code will branch on flat and mask. This CL
  will perform both branches and combine the data. A later CL will
  perform a check to see if all patch will take one branch.
   These functions are about 1.75 times faster than the C code on
  Nexus 7.

  PS #3
   Changed all functions to dub limit, blimit, and thresh from
  vld dx[], freeing up r4-r6.
   Changed code to use vbif to reduce one instruction and free
  up a d register.

  Change-Id : I028dae0e434dc9891c3677bdb182e201ffb04777

• FFmpeg : How to convert horizontal video 16:9 to vertical video 9:16, with blurred background on top and bottom sides

  13 janvier 2016, par gomezo

  I know there is a post to do the contrary :
  FFmpeg : How to convert vertical video with black sides, to video 16:9, with blurred background sides

  but i can’t figure out how to do this with ffmpeg

  here is the input :

  

  and here is the expected result (the background video should be zoomed with the same aspect ratio, cropped to 9/16 and blurred) :

  

  Thanks for your help !

• Is it possible to increase horizontal and vertical padding on ffmpeg burned subtitles - using .srt format ?

  6 mai 2022, par Dr. House

  Using command :

  


  ffmpeg -i source_video_path.mp4 -vf "subtitles=srt_source.srt:force_style='OutlineColour=&H80000000,BorderStyle=4,BackColour=&H80000000,Outline=0,Shadow=0,MarginV=25,Fontname=Arial,Fontsize=10,Alignment=2'" video_destination.mp4


  


  I get

  


  

  


  Ideally I would like to increase the subtitles background padding - especially horizontally.