I'm trying to burn in subtitles from this format:
0:0 Video 0:1 English Audio 0:2 Japanese Audio 0:3 English subtitle (default) 0:4 English subtitle (translation only)
Both are subrip. What I usually use is this batch file
ffmpeg -i "foo.mkv" ^ -map 0:0 -map 0:2 ^ -c:a:2 copy ^ -vf subtitles="foo.mkv" ^ "foo_1.mkv"
but it only works if there's one subtitle stream. When I run this on the dual subtitle videos it processes a new video but gives no subtitles.