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• How to clone last frame when using overlay in ffmpeg ? [closed]

  6 mai 2024, par mikezang

  I use this code to slide previous and next pages up, this is no problems, can I remove png file 1970～1979-last.png and use the last frame of video file 1970～1979.mp4 to instead it ?

  


  script-01.txt

  


  color=white:864x504[c];
[0:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s0];
[1:v]scale=864:504:force_original_aspect_ratio=decrease,pad=864:504:-1:-1,setsar=1[s1];
[c][s0]overlay=y=0-h*t[c];
[c][s1]overlay=y='if(between(t,0,18),max(H-h*t,0),max(0-h*(t-18),0-H))'[v],
[v]tpad=stop_mode=clone:stop_duration=10[s2];
[s2]drawtext=fontfile='/WINDOWS/Fonts/Arial.ttf':text='%{eif\:18-t\:d}':
box=1:boxborderw=10:boxcolor=orange@0.4:
x=w-tw-10:y=10:fontsize=24:fontcolor=red:enable='between(t,8,18)';


  


  script-01.bat

  


  ffmpeg -hide_banner -loglevel fatal ^
    -loop 1 -i "C:\myimages\1970～1979-last.png" ^
    -i "C:\myvideos\years\1980～1989.mp4" ^
    -filter_complex_script script-01.txt ^
    -t 18 -y v01.mp4


  


  I got it what I only need video files and capture last frame by pipe line to next step, so that the last frame image never neede ! Though the first slide has little problem when countdown finished !

  


  script-01.bat

  


  ffmpeg -hide_banner -loglevel fatal ^
    -sseof -0.03 -i "C:\myvideos\years\1970～1979.mp4" ^
    -vframes 1 -c:v png -f image2pipe - | ffmpeg  ^
    -hide_banner -loglevel fatal -i - ^
    -i "C:\myvideos\years\1980～1989.mp4" ^
    -filter_complex_script script-01.txt ^
    -t 18 -y v01.mp4


  


• avcodec/libx264 : bump minimum required version to 155

  9 avril 2024, par Niklas Haas

  avcodec/libx264 : bump minimum required version to 155
  This version is seven years old, and present in Debian oldoldstable,
  
  Ubuntu 20.04 and Leap 15.0.
  Allows cleaning up the file substantially. In particular, this is
  
  motivated by the desire to stop relying on init_static_data.
  

  • [DH] configure
  • [DH] libavcodec/libx264.c

• avcodec/mips/aaccoder_mips : Remove MIPS-specific aaccoder

  15 mars 2024, par Andreas Rheinhardt

  avcodec/mips/aaccoder_mips : Remove MIPS-specific aaccoder
  ff_aac_coder_init_mips() modifies a static const structure of
  
  function pointers. This will crash if the binary uses relro
  
  and is a data race in any case.
  Furthermore it points to a maintainability issue : The
  
  AACCoefficientsEncoder structures have been constified
  
  in commit fd9212f2edfe9b107c3c08ba2df5fd2cba5ab9e3,
  
  a Libav commit merged in 318778de9ebec276cb9dfc65509231ca56590d13.
  
  Libav did not have the MIPS-specific AAC code and so this was
  
  fine for them ; yet FFmpeg had them, but this was not recognized.
  Commit 75a099fc734a4ee2b1347d0a3d8c53d883b95174 points to another
  
  maintainability issue : Contrary to ordinary DSP code, this code
  
  here is way more complex and needs to be constantly kept in sync
  
  with the ordinary code which it mimicks and replaces. Said commit
  
  is the only commit actually changing aaccoder.c in the last few
  
  years and the same change has not been performed for the MIPS
  
  clone ; before that, it even happened several times that the mips
  
  code was broken due to changes of the generic code (see commits
  
  97437bd17a8c5d4135b2f3b1b299bd7bb72ce02c and
  
  de262d018d7d7d9c967af1dfd1b861c4b9eb2a60 or
  
  860dbe0275e57cbf4228f3f653f872ff66ca596b or
  
  933309a6ca0f18bf1d40e917fff455221f57fb4b or
  
  b65ffa316e377213c29736929beba584d0d80d7c). This might even lead
  
  to scenarios where someone changing non-dsp aacenc code would
  
  have to modify mips inline asm in order to keep them in sync.
  
  This is obviously a significant burden (if the AAC encoder were
  
  actively developed).
  Finally, the code does not even compile here due to errors like
  
  "Error : float register should be even, was 1".
  Reviewed-by : Lynne <dev@lynne.ee>
  
  Reviewed-by : Jean-Baptiste Kempf <jb@videolan.org>
  
  Signed-off-by : Andreas Rheinhardt <andreas.rheinhardt@outlook.com>
  

  • [DH] libavcodec/aacenc.c
  • [DH] libavcodec/aacenc.h
  • [DH] libavcodec/mips/Makefile
  • [DH] libavcodec/mips/aaccoder_mips.c