ffmpeg -i test.mp4 -ss 00:00:10 -vframes 1 ff_capture.png

ffmpeg -i fuzhous.mp4 -vf unsharp=luma_amount=3 ff_unsharp.mp4

ffmpeg -f x11grab -framerate 25 -video_size 1920×880 -i :0.0+0,200 -vf ‘setpts=(RTCTIME-RTCSTART)/(TB*1000000)’ -af asetpts=N/SR/TB,apad -shortest -c:v libx264 -profile:v high444 -preset:v veryfast -qp:v 0 -pix_fmt yuv444p -c:a mp3 -strict -2 -t 00:20:45 -f mp4 01议论文单元.mp4 -y -f pulse -i “alsa_output.pci-0000_00_1b.0.analog-stereo.monitor” -t 00:20:45 -f mp3 01议论文单元.mp3 -y -t 00:20:45 -r 1/1 -f image2 cctv/01议论文单元-%d.jpg -y exit

ffmpeg -i ../fuzhous.mp4 -i ../seas.mp4 -filter_complex “[0:v]fps=25[v0];[1:v]fps=25[v1];[v0][v1]xfade=transition=2:turnpage:duration=2:offset=3,format=yuv420p” ff_xfade_turnpage.mp4

ffmpeg -i test.mp4 -vf “subtitles=../fuzhou.srt:force_style=’Fontname=KaiTi,Fontsize=36,Alignment=2,OutlineColour=&H003300FF,BackColour=&H0033FF00,BorderStyle=1,Outline=1,Shadow=1,Spacing=5,MarginL=15,MarginV=20′” ff_subtitles_srt.mp4 ffmpeg -i test.mp4 -vf subtitles=filename=../fuzhou.ass:charenc=utf-i ff_subtitles_ass.mp4