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• avcodec/xbm_parser : split long line

  5 février 2021, par Paul B Mahol

  avcodec/xbm_parser : split long line
  

  • [DH] libavcodec/xbm_parser.c

• Partial SPLIT screen video using ffmpeg ?

  8 mai 2023, par PirateApp
  


  • I would like to show you an actual example so that you guys can understand what I am trying to achieve

    


  


  • I have a VIDEO that is entirely split screen currently

    


  


  • If you observe carefully, at the beginning of this video, there are cutscenes that are the same for everyone


    


  


  • After that the actual split screen content begins which each screen has something different going on


    


  


  • Notice how we are back to the same cutscene type content around 10:55 and 29:05

    


  


  • Basically whenever there is a cut scene I would like to show it without split screen from a single source

    


  


  • Whenever it is not a cut scene, I want it to be a split screen video

    


  


  • Let us say that 00:00 to 01:15 and 10:00 to 10:30 and 29:00 to end of the video has cutscenes

    


  


  • These 3 parts need to be shown without split screen while the rest of the video shows up as split screen

    


  


  • How do I achieve this in ffmpeg ?

    


  


  • I wrote a script that does the split screen part

    


  


  


  ​

  


  ffmpeg -i "$player_one.$player_one_extension" \
    -i "$player_two.$player_two_extension" \
    -i "$player_three.$player_three_extension" \
    -i "$player_four.$player_four_extension" \
    -filter_complex \
        "nullsrc=size=${video_width}x${video_height} [base]; \
        [0:v] trim=start=$player_one_offset,setpts=PTS-STARTPTS, scale=${half_width}x${half_height}, drawtext=fontfile=control-freak-font/CONTF___.ttf:text='${player_one_name}':fontsize=$font_size:fontcolor=0xFFFFFF:alpha='$alpha':x=w-text_w-${font_padding}:y=h-text_h-${font_padding} [upperleft]; \
        [1:v] trim=start=$player_two_offset,setpts=PTS-STARTPTS, scale=${half_width}x${half_height}, drawtext=fontfile=control-freak-font/CONTF___.ttf:text='${player_two_name}':fontsize=$font_size:fontcolor=0xFFFFFF:alpha='$alpha':x=w-text_w-${font_padding}:y=h-text_h-${font_padding} [upperright]; \
        [2:v] trim=start=$player_three_offset,setpts=PTS-STARTPTS, scale=${half_width}x${half_height}, drawtext=fontfile=control-freak-font/CONTF___.ttf:text='${player_three_name}':fontsize=$font_size:fontcolor=0xFFFFFF:alpha='$alpha':x=w-text_w-${font_padding}:y=h-text_h-${font_padding} [lowerleft]; \
        [3:v] trim=start=$player_four_offset,setpts=PTS-STARTPTS, scale=${half_width}x${half_height}, drawtext=fontfile=control-freak-font/CONTF___.ttf:text='${player_four_name}':fontsize=$font_size:fontcolor=0xFFFFFF:alpha='$alpha':x=w-text_w-${font_padding}:y=h-text_h-${font_padding} [lowerright]; \
        [3:a] atrim=start=$audio_offset,asetpts=PTS-STARTPTS[outa]; [base][upperleft] overlay=shortest=1 [tmp1]; [tmp1][upperright] overlay=shortest=1:x=${half_width} [tmp2]; [tmp2][lowerleft] overlay=shortest=1:y=${half_height} [tmp3]; [tmp3][lowerright] overlay=shortest=1:x=${half_width}:y=${half_height}[v]"\
    -map "[v]" -map "[outa]" -c:v libx264 -shortest -t $duration "100_100_hardcore_ghost_recon_future_soldier_coop_pc_${mission}4k.mp4"



  


  

  • The way I understand the code above has a split base for the entire duration of the video

  


  • One way that I could think of is to make individual videos separately. For example, the cutscenes from 00:00 to 01:15, 10:00 to 10:30 and 29:00 to end would be 3 separate videos. Remaining would be split screen videos and then I would have to merge all the 5 clips together using ffmpeg concat. Is there a better way ?

  


  


• vp9 : split pre-load of 11585x2 out of 1d idct macro.

  2 décembre 2013, par Ronald S. Bultje

  vp9 : split pre-load of 11585x2 out of 1d idct macro.
  This allows us to load it only once, instead of twice, in this function.
  

  • [DH] libavcodec/x86/vp9itxfm.asm