![]() ![]() ![]() map 0:a:0 - means, that you want to take first audio stream from input fileĪudio will be copied, video stream will be reencoded. map "" - means, that you want to put into your output video processed by filter_complex stream (video + subtitles). :si=0 - means, that you want to take first subtitle stream from input file means, that you want to take first video stream from input file. To burn-in subtitles you can read the link at the top of the message or find another subject here at the stackexchange.īasically you can burn-in subtitles from MKV to MP4 using this command ffmpeg -i input.mkv -filter_complex "subtitles=input.mkv:si=0" `-map ""` -map 0:a:0 -c:a copy output.mp4 This command with "-map 0" will put all available tracks into the output file: ffmpeg -i input.mkv -map 0 -c:v libx264 -c:a aac -c:s mov_text output.mp4 You can can input ffmpeg "myMovie.mkv" to look at the list of streams in the file. the output MP4 into an MKV using the same command, but with a different codec for the subtitles. ![]() map 0:s:0 means, that you want to pick first subtitles track from first input file "myMovie.mkv". ffmpeg.exe -i input.mp4 -c copy -c:s movtext output.mkv. map 0:a:0 means, that you want to pick first audio track from first input file "myMovie.mkv". map 0:v:0 means, that you want to pick first video track from first input file "myMovie.mkv". ffmpeg -i myMovie.mkv -c copy -map 0:v:0 -map 0:a:0 -map 0:s:0 myMovieMP4.mp4 You can find detailed answer on your question hereīasically you need to add "-map" parameter to your command. ![]()
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