lwc:multimedia_and_graphics:transcoding

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lwc:multimedia_and_graphics:transcoding [2022/07/14 22:41] – [ffmpeg] John Harrisonlwc:multimedia_and_graphics:transcoding [2024/02/13 19:50] (current) – John Harrison
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   * find framerate: ffmpeg -i $file 2>&1 | sed -n "s/.*, \(.*\) fp.*/\1/p"   * find framerate: ffmpeg -i $file 2>&1 | sed -n "s/.*, \(.*\) fp.*/\1/p"
   * make video from single image (example): ''ffmpeg -loop 1 -i image.png -c:v libx264 -t 15 -pix_fmt yuv420p -vf scale=320:240 out.mp4'' ([[https://stackoverflow.com/questions/25891342/creating-a-video-from-a-single-image-for-a-specific-duration-in-ffmpeg|source]])   * make video from single image (example): ''ffmpeg -loop 1 -i image.png -c:v libx264 -t 15 -pix_fmt yuv420p -vf scale=320:240 out.mp4'' ([[https://stackoverflow.com/questions/25891342/creating-a-video-from-a-single-image-for-a-specific-duration-in-ffmpeg|source]])
 +  * make video from a series of images (not necessarily numbered from 0000): ''cat *.jpeg | ffmpeg -f image2pipe -i - output.mkv'' then ''ffmpeg -i output.mkv -codec copy output.mp4'' //from [[https://stackoverflow.com/questions/22965569/convert-from-jpg-to-mp4-by-ffmpeg|this source]]// 
  
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  • lwc/multimedia_and_graphics/transcoding.1657856475.txt.gz
  • Last modified: 2022/07/14 22:41
  • by John Harrison