Add README.MD

2026-03-29 10:48:03 -04:00
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+## Play MPEG files on a Sega Dreamcast
+
+Just experimenting to see if I can play MPEG files.
+There are still a lot of issues though, like no sound or a lot of stutter.
+
+You can also check Ian's implementaton here: https://github.com/ianmicheal/pl_mpegDC
+
+## Build instructions
+
+1. Follow the instructions here to install the dependencies: https://dreamcast.wiki/Getting_Started_with_Dreamcast_development
+2. Also build and optionally install `mkdcdisc` globally: https://dreamcast.wiki/Getting_Started_with_Dreamcast_development#Burning_an_example_program_to_CD-R
+3. Remember to run `. /opt/toolchains/dc/kos/environ.sh` and `. /opt/toolchains/dc/kos/environ_dreamcast.sh` to set up the necessary env variables
+4. Place your MPEG file in the `cd_root` folder and name it `VIDEO.MPG`
+5. `make`
+6. mkdcdisc -e main.elf -o any_name.cdi -n "ANY NAME" -D cd_root/
+
+## Converting an MP4 file to MPEG
+```
+ffmpeg -i bad-apple.mp4 -vf "scale=320:240,format=yuv420p" -c:v mpeg1video -b:v 600k -r 30 -c:a mp2 -ar 22050 -ac 2 -b:a 64k  VIDEO.MPG
+```
+
+### Disclaimer
+A lot of the code here was written by AI (sorry, I'm still not that good at C or Dreamcast homebrew). Though, a lot of manual work still went into this to correct the AI's mistakes.