Recherche avancée

Sur d’autres sites (7935)

• How to implement spring animation (mass, tension, friction) in FFmpeg zoompan filter instead of linear interpolation ?

  29 mai, par Mykyta Manuilenko

  I'm trying to create a zoom-in and zoom-out animation using FFmpeg's zoompan filter, but I want to replace the linear interpolation with a spring animation that uses physics parameters (mass, tension, friction).

  


  My input parameters :

  


  "zoompan": {
  "focusRect": {
    "x": 1086.36,
    "y": 641.87,
    "width": 613,
    "height": 345
  },            
  "easing": {
    "mass": 1,
    "tension": 120,
    "friction": 20
  }
}


  


  Current working linear animation :

  


  ffmpeg -framerate 25 -loop 1 -i input.png \
  -filter_complex "\
    [0:v]scale=6010:3380,setsar=1,split=3[zoomin_input][hold_input][zoomout_input]; \
    [zoomin_input]zoompan= \
      z='iw/(iw/zoom + (ow - iw)/duration)': \
      x='x + (3400 - 0)/duration': \
      y='y + (2009 - 0)/duration': \
      d=25:fps=25:s=1920x1080, \
      trim=duration=1,setpts=PTS-STARTPTS[zoomin]; \
    [hold_input]crop=1920:1080:3400:2009,trim=duration=4,setpts=PTS-STARTPTS[hold]; \
    [zoomout_input]zoompan=\
      zoom='if(eq(on,0),iw/ow,iw/(iw/zoom + (iw-ow)/duration))':\
      x='if(eq(on,0),3400,x + (0-3400)/duration)':\
      y='if(eq(on,0),2009,y + (0-2009)/duration)':\
      d=25:fps=25:s=1920x1080, \
      trim=duration=1,setpts=PTS-STARTPTS[zoomout];
    [zoomin][hold][zoomout]concat=n=3:v=1:a=0[outv]" \
  -map "[outv]" \
  -crf 23 \
  -preset medium \
  -c:v libx264 \
  -pix_fmt yuv420p \
  output.mp4


  


  Notes :

  


  


  • It creates a perfectly straight zoom path to the specific point on the screen (similar to pinch-zooming on a smartphone - straight zooming to the center of the focus rectangle)

    


  


  • To improve the quality of the output, I upscale it beforehand

    


  


  


  What I want to achieve :

  


  Instead of linear interpolation, I want to implement a spring function with these physics parameters :

  


  

  • mass : 1

  


  • tension : 120

  


  • friction : 20

  


  


  Note that these params can be changed.

  


  Also, I want to preserve a perfectly straight zoom path to the specific point on the screen (similar to pinch-zooming on a smartphone).

  


  Question :

  


  How can I properly implement a spring animation function in FFmpeg's zoompan filter ?

  


• FFMpeg Error av_interleaved_write_frame() :

  18 janvier 2014, par rajaneesh

  this my code . after running php code

  FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  
    configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include --enable-libamr-nb --enable-libamr-wb --enable-libdirac --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-x11grab
  
    libavutil     49.15. 0 / 49.15. 0
  
    libavcodec    52.20. 0 / 52.20. 0
  
    libavformat   52.31. 0 / 52.31. 0
  
    libavdevice   52. 1. 0 / 52. 1. 0
  
    libswscale     0. 7. 1 /  0. 7. 1
  
    libpostproc   51. 2. 0 / 51. 2. 0
  
    built on Nov  6 2009 19:05:03, gcc: 4.1.2 20080704 (Red Hat 4.1.2-46)
  
  
  
  Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (25/1)
  
  Input #0, flv, from 'demo.flv':
  
    Duration: 00:00:30.83, start: 0.000000, bitrate: 546 kb/s
  
      Stream #0.0: Video: h264, yuv420p, 640x360 [PAR 1:1 DAR 16:9], 546 kb/s, 25 tbr, 1k tbn, 50 tbc
  
      Stream #0.1: Audio: aac, 44100 Hz, stereo, s16
  
  Output #0, image2, to 'demo.jpg':
  
      Stream #0.0: Video: mjpeg, yuvj420p, 640x360 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 1 tbc
  
  Stream mapping:
  
    Stream #0.0 -> #0.0
  
  Press [q] to stop encoding
  
  av_interleaved_write_frame(): I/O error occurred
  
  Usually that means that input file is truncated and/or corrupted.

• FFMpeg Error av_interleaved_write_frame() :

  7 mars 2024, par rajaneesh

  



  this my code . after running php code

  



  FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
  configuration: --prefix=/usr --libdir=/usr/lib --shlibdir=/usr/lib --mandir=/usr/share/man --incdir=/usr/include --enable-libamr-nb --enable-libamr-wb --enable-libdirac --enable-libfaac --enable-libfaad --enable-libmp3lame --enable-libtheora --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-pthreads --enable-shared --enable-swscale --enable-x11grab
  libavutil     49.15. 0 / 49.15. 0
  libavcodec    52.20. 0 / 52.20. 0
  libavformat   52.31. 0 / 52.31. 0
  libavdevice   52. 1. 0 / 52. 1. 0
  libswscale     0. 7. 1 /  0. 7. 1
  libpostproc   51. 2. 0 / 51. 2. 0
  built on Nov  6 2009 19:05:03, gcc: 4.1.2 20080704 (Red Hat 4.1.2-46)

Seems stream 0 codec frame rate differs from container frame rate: 50.00 (50/1) -> 25.00 (25/1)
Input #0, flv, from 'demo.flv':
  Duration: 00:00:30.83, start: 0.000000, bitrate: 546 kb/s
    Stream #0.0: Video: h264, yuv420p, 640x360 [PAR 1:1 DAR 16:9], 546 kb/s, 25 tbr, 1k tbn, 50 tbc
    Stream #0.1: Audio: aac, 44100 Hz, stereo, s16
Output #0, image2, to 'demo.jpg':
    Stream #0.0: Video: mjpeg, yuvj420p, 640x360 [PAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 1 tbc
Stream mapping:
  Stream #0.0 -> #0.0
Press [q] to stop encoding
av_interleaved_write_frame(): I/O error occurred
Usually that means that input file is truncated and/or corrupted.