ffmpeg合并两个视频 设置封面 顺序播放

 -i "D:\Program\ffmpeg\bin\新建文件夹\22.mp4" -vf "scale=720:1280" -b:v 2804k  -c:v h264_qsv  "\temp\9842561\deal1.mp4"

 -i "D:\Program\ffmpeg\bin\新建文件夹\44.mp4" -vf "scale=720:1280" -b:v 2804k  -c:v h264_qsv  "\temp\9842561\deal2.mp4"

-i "\temp\9842561\deal1.mp4" -ss 0 -vframes 1 \temp\9842561\1.jpg"

-i "\temp\9842561\deal2.mp4" -ss 0 -vframes 1 "\temp\9842561\2.jpg"

ffprobe   -v quiet -print_format json -show_streams "\temp\9842561\deal1.mp4"

 \bin\ffmpeg  -y -i " \temp\9842561\2.jpg" -t 8.666666984558 -crf 1 -filter_complex "color=s=720x1280:c=0xFFFFFF@1[v];[0:v]scale=720:1280,setsar=1:1[v1];[v][v1]overlay=x=0:y=0" " \temp\9842561\for1new2.mp4"

 \bin\ffmpeg  -y -i " \temp\9842561\1.jpg" -t 13.86666679382 -crf 1 -filter_complex "color=s=720x1280:c=0xFFFFFF@1[v];[0:v]scale=720:1280,setsar=1:1[v1];[v][v1]overlay=x=0:y=0" " \temp\9842561\for1new1.mp4"

 \bin\ffmpeg -y -i " \temp\9842561\deal1.mp4" -i " \temp\9842561\for1new2.mp4" -filter_complex "[0:v]pad=iw*2:ih[a];[a][1:v]overlay=w" -b:v 2804k  -c:v h264_qsv  " \temp\9842561\11.mp4"

 \bin\ffmpeg -y -i " \temp\9842561\for1new1.mp4" -i " \temp\9842561\deal2.mp4" -filter_complex "[0:v]pad=iw*2:ih[a];[a][1:v]overlay=w" -b:v 2804k  -c:v h264_qsv  " \temp\9842561\22.mp4"

 \bin\ffmpeg -y -i " \temp\9842561\11.mp4" -vcodec copy -acodec copy -vbsf h264_mp4toannexb " \temp\9842561\input1.ts"

 \bin\ffmpeg -y -i " \temp\9842561\22.mp4" -vcodec copy -acodec copy -vbsf h264_mp4toannexb " \temp\9842561\input2.ts"

 \bin\ffmpeg -y -i "concat: \temp\9842561\input1.ts| \temp\9842561\input2.ts" -acodec copy -vcodec copy -absf aac_adtstoasc " \temp\9842561\combine.mp4"

 \bin\ffmpeg -y -i " \temp\9842561\combine.mp4" -vf "scale=1280:720" -b:v 2804k  -c:v h264_qsv  " \temp\9842561\output.mp4"