Recherche avancée

Sur d’autres sites (11881)

• DrawText and crossfade effect - ffmpeg

  22 juillet 2018, par Geek

  I have one video with crossfade effect and i want add text on this video (drawtext).
  However when i add a filter text, he remove a crossfade effect in the final video.

  Command to create video with crossfade effect :

  ffmpeg -i first.mp4 -i second.mp4 -filter_complex 
  
      "[0:v]trim=start=0:end=2,setpts=PTS-STARTPTS[0_clip_1];
  
      [0:v]trim=start=2:end=3,setpts=PTS-STARTPTS[fadeoutsrc_0];
  
      [fadeoutsrc_0]format=pix_fmts=yuva420p,fade=t=out:st=0:d=1:alpha=1[fadeout_0];
  
      [fadeout_0]fifo[fadeoutfifo_0];[1:v]trim=start=1,setpts=PTS-STARTPTS[1_clip_2];
  
      [1:v]trim=start=0:end=1,setpts=PTS-STARTPTS[fadeinsrc_1];
  
      [fadeinsrc_1]format=pix_fmts=yuva420p,fade=t=in:st=0:d=1:alpha=1[fadein_1];
  
      [fadein_1]fifo[fadeinfifo_1];
  
      [fadeoutfifo_0][fadeinfifo_1]overlay[crossfade_1];
  
      [0_clip_1][crossfade_1][1_clip_2]concat=n=3[output];[0:a][1:a] acrossfade=d=1 [audio]" 
  
  -map "[output]" -map "[audio]" videoWithCrossfade.mp4

  Command to add filter text :

  ffmpeg -i videoWithCrossfade.mp4 -filter_complex 
  
      "/Windows/fonts/arial.ttf':text='hello world!':fontcolor=white:fontsize=40:box=1:boxcolor=red
  
      @0.5:boxborderw=10:x=500:y=500"
  
      output.mp4

  this is the link of video : http://www.mediafire.com/file/kw3lvdb2rp1bs6u/videoWithCrossfade.mp4/file
  http://www.mediafire.com/file/iycdzozsqzosq87/output.mp4/file

  Thanks for your help !

• Where to place the fontfile for the FFmpeg drawtext-Filter ?

  18 juin 2018, par jpGerhard

  I’m using the precompiled FFmpeg-Android by Bravobit (via gradle : implementation 'nl.bravobit:android-ffmpeg:1.1.5' ; based on WritingMind’s) with the intention of drawing the current timestamp/location onto a .mp4 file. I am completely new to FFmpeg and have started with Android Studio a few months ago.

  Information :

  • IDE : Android Studio
  • OS : OSX 10.13.5

  My problem :

  I don’t know whether the fontfile needs to be in the Application path on my Phone, in the Android Studio directory or just on a location on my MacBook (so it gets compiled when running the application).

  Basic FFmpeg commands (-version, ...) are working, but I can’t seem to figure out where I have to place my fontfile.

  My current command is as follows :

  -i /path/to/video.mp4 -vf drawtext=fontfile=/users/shared/fonts/arial.ttf:text='Hello World' /path/to/output.mp4

  I’ve tried a lot of variations and always received to following errors :

  Fontconfig error : Cannot load default config file
  [Parsed_drawtext_0 @ 0xecbfd420] impossible to init fontconfig
  [AVFilterGraph @ 0xec9cc140] Error initializing filter ’drawtext’ with args ’fontfile=/users/shared/fonts/arial.ttf:text=Hello World’
  Error reinitializing filters !
  Failed to inject frame into filter network : Unknown error occurred
  Error while processing the decoded data for stream #0:0
  Conversion failed !

  Does anyone have a suggestion on how to get this to work ?

• Where to place the fontfile for the FFmpeg Android drawtext-Filter ?

  13 juin 2018, par jpGerhard

  I’m using the precompiled FFmpeg-Android by Bravobit (via gradle : implementation 'nl.bravobit:android-ffmpeg:1.1.5' ; based on WritingMind’s) with the intention of drawing the current timestamp/location onto a .mp4 file. I am completely new to FFmpeg and have started with Android Studio a few months ago.

  Information :

  • IDE : Android Studio
  • OS : OSX 10.13.5

  My problem :

  I don’t know whether the fontfile needs to be in the Application path on my Phone, in the Android Studio directory or just on a location on my MacBook (so it gets compiled when running the application).

  Basic FFmpeg commands (-version, ...) are working, but I can’t seem to figure out where I have to place my fontfile.

  My current command is as follows :

  -i /path/to/video.mp4 -vf drawtext=fontfile=/users/shared/fonts/arial.ttf :text='Hello World' /path/to/output.mp4

  I’ve tried a lot of variations and always received to following errors :

  Fontconfig error : Cannot load default config file
  [Parsed_drawtext_0 @ 0xecbfd420] impossible to init fontconfig
  [AVFilterGraph @ 0xec9cc140] Error initializing filter ’drawtext’ with args ’fontfile=/users/shared/fonts/arial.ttf:text=Hello World’
  Error reinitializing filters !
  Failed to inject frame into filter network : Unknown error occurred
  Error while processing the decoded data for stream #0:0
  Conversion failed !

  Does anyone have a suggestion on how to get this to work ?