![]() Stream #0:7: Unknown: none ( / 0x0005)įile 'cut.mkv' already exists. Stream #0:6(eng): Subtitle: dvb_subtitle ( / 0x0006) (hearing impaired) I have a command that selects the three streams and copies 1 minute to the output, as follows: ffmpeg -ss 00:28:00.200 -i Hillary-.mpg -t 00:01:00.000 -map 0:0 -c:v copy -map 0:3 -c:a copy -map 0:6 -c:s dvdsub cut.mkv I have tried using the scale2ref filter, but I don't understand the documentation, and the example they give makes no sense to me (see examples below). ![]() The problem I'm having is that the dvdsub subtitles appear very small when I play the output video, when I researched this I found that ffmpeg doesn't automatically scale the subtitles to match the source video: (I chose mkv as it will allow storing a dvdsub subtitle stream where other container formats wont.) My first step on that path is just to be able to select one each of the video, audio and subtitle streams and copy them to an mkv file, discarding the streams I'm not interested in. My eventual goal is to be able to create a smaller video file as the mpeg file is multi-gigabytes in size. ![]() ![]() ![]() I have an mpeg file, recorded from live TV, containing video and multiple audio and subtitles streams. ![]()
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