appwiki:ffmpeg

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appwiki:ffmpeg [2021/07/11 04:35] – [Common Convertion] yingappwiki:ffmpeg [2021/12/08 20:16] – [Common Convertion] ying
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 ffmpeg.exe -ss 00:00:09 -i video.mp4 -c copy -to 00:00:21 video_cut.mp4 ffmpeg.exe -ss 00:00:09 -i video.mp4 -c copy -to 00:00:21 video_cut.mp4
 </code> </code>
 +  * combine list of videos into 1 video
 +    * ref: https://stackoverflow.com/questions/7333232/how-to-concatenate-two-mp4-files-using-ffmpeg
  
   * gif maker <code>   * gif maker <code>
Line 70: Line 72:
 </code> </code>
  
 +  * image to square size (like convert image to texture size format) <code>
 +ffmpeg -i image.jpg -vf "scale=1024:1024:force_original_aspect_ratio=decrease,pad=1024:1024:-1:-1:color=white" -q:v 1 tex_image.jpg
 +
 +# longest side, so basically original size with padding to square
 +ffmpeg -i image.jpg -vf "scale=max(iw\,ih):max(iw\,ih):force_original_aspect_ratio=decrease,pad=max(iw\,ih):max(iw\,ih):-1:-1:color=white" -q:v 1 tex_image.jpg
 +</code>
  • appwiki/ffmpeg.txt
  • Last modified: 2022/12/07 07:21
  • by ying