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| # assuming SAR is 1:1, | |
| SRC=Foo.mp4 | |
| SRC_WIDTH=1916 | |
| SRC_HEIGHT=852 | |
| DST_WIDTH=720 | |
| DST_HEIGHT=480 | |
| DST_ASPECT=16/9 | |
| DST_FPS=24000/1001 | |
| DST_RATE=4100k | |
| # the height of the video inside the frame | |
| DST_VIDEO_HEIGHT=$(printf '%.0f' $(bc -l <<<"($SRC_HEIGHT) * ($DST_HEIGHT) * ($DST_ASPECT) / ($SRC_WIDTH)")) | |
| # if it's odd, make it even | |
| (( !(DST_VIDEO_HEIGHT & 1) )) || ((++DST_VIDEO_HEIGHT)) | |
| # vertical offset to the video inside the frame | |
| DST_VIDEO_Y=$(( (DST_HEIGHT-DST_VIDEO_HEIGHT) / 2 )) | |
| ffmpeg -threads 8 -i "$SRC" -cpuflags +avx -vf "scale=w=$DST_WIDTH:h=$DST_VIDEO_HEIGHT:interl=-1,pad=width=$DST_WIDTH:height=$DST_HEIGHT:x=0:y=$DST_VIDEO_Y:color=black" -c:v mpeg2video -f dvd -s ${DST_WIDTH}x$DST_HEIGHT -aspect $DST_ASPECT -r $DST_FPS -pix_fmt yuv420p -g 15 -b:v $DST_RATE -maxrate 8000000 -minrate 0 -bufsize 1835008 -packetsize 2048 -pass 1 -an -y tmp.mpg | |
| ffmpeg -threads 8 -i "$SRC" -cpuflags +avx -vf "scale=w=$DST_WIDTH:h=$DST_VIDEO_HEIGHT:interl=-1,pad=width=$DST_WIDTH:height=$DST_HEIGHT:x=0:y=$DST_VIDEO_Y:color=black" -c:v mpeg2video -c:a copy -f dvd -s ${DST_WIDTH}x$DST_HEIGHT -aspect $DST_ASPECT -r $DST_FPS -pix_fmt yuv420p -g 15 -b:v $DST_RATE -maxrate 8000000 -minrate 0 -bufsize 1835008 -packetsize 2048 -pass 2 -y output.mpg | |
| VIDEO_FORMAT=NTSC dvdauthor -o dvd -t output.mpg | |
| VIDEO_FORMAT=NTSC dvdauthor -o dvd -T | |
| mkisofs -dvd-video -udf -V "Foo" -o dvd.iso dvd |
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