video - Extracting Subtitles from mkv using ffmpeg -


so i'm trying extract subtitles , format (how look) , trying implement them mkv of same video. long story short, i'm trying nice looking subtitles follow colour of background

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and lovely colours

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so when use ffmpeg check streams , how map them , whatot , shows

enter image description here

there 40 sum streams nice looking subtitles. so, how out?

to extract fonts:

ffmpeg -dump_attachment:t "" -i input.mkv

(ffmpeg spit out error fonts extracted)

to copy subtitles , fonts new mkv

ffmpeg -i new.mp4 -i old.mkv -c copy -map 0 -map 1:s -map 1:t new.mkv

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