• 转换格式:ffmpeg -i input.mp4 -qscale 0 output.avi
  • 不降低视频质量:-qscale 0
  • 横向/纵向拼接:-filter_complex hstack/vstack
  • 裁减视频:
    • ffmpeg -ss 00:30:00 -i vid.mp4 -t 60 -c copy out.mp4
    • ffmpeg -ss 00:30:00 -i vid.mp4 -to 00:31:00 -c copy out.mp4
  • Kazam 转码: ffmpeg -y -i input_file.mp4 -c:v libx264 -c:a aac -strict experimental -tune fastdecode -pix_fmt yuv420p -b:a 192k -ar 48000 output_file.mp4

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