It's an mp4 with a codec ID "isom". Audio is 112K AAC. I want to encode to NTSC (720x480) and I assume progressive (isn't that normal?). For the 1st video, the time is 2:13:05, so I calculated a bitrate of 4250 so that it would fit with 192K ac3 audio.
I didn't know the source mattered. I just plugged in the bitrate for video and audio, resolution and file name when trying the parameter I mentioned. Without the matrix stuff, it looked like this:
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ffmpeg -i game.mp4 -f dvd -c:v:0 mpeg2video -bf 2 -mbd rd -trellis 2 -cmp 2 -subcmp 2 -aspect 16:9 -s 720x480 -r 25 -g 15 -b:v:0 4250000 -maxrate:v:0 8500000 -qmin 1 -lmin 175 -bufsize:v:0 1835008 -packetsize 2048 -muxrate 10080000 -b:a 192000 -ar 48000 -c:a:0 ac3 -map 0:v -map 0:a -map -0:s game.mpg
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