My DVD Disc Experience

1. Use mkvtoolnix to add the subtitle file to the mp4 (or mkv ) file. The result will be a mkv file.
2. Use freemake video converter to convert the mkv file to DVD type, but don't program the DVD disc directly but save the ouput into a ISO file.
3. Use disc programmer, like Nero, to program the ISO file to the DVD disc.

Why don't program the DVD disc in freemake video converter, that's because freemake video converter will use the faster possible speed to program the DVD disc, but the result DVD disc sometimes will not be read smoothly by the generic DVD player.

But if I used Nero to program the DVD at the lowest speed (like 2x speed ), the result DVD disc seems play smoothly by the DVD player.