This command inspects the streams in input.mkv, but only shows the subtitle streams. Here's how you list the subtitle streams:įfprobe -v error -of json input.mkv -of json -show_entries "stream=index:stream_tags=language" -select_streams s You must use ffprobe to find which subtitles stream is where, then extract the streams you want one by one. You will get an error like "SRT supports only a single subtitles stream" or "Exactly one WebVTT stream is needed".Īs far as I know, there is no way to select only the first subtitle track of each language. ffmpeg will try to fit multiple English subtitle streams in the same. However, this fails if you have multiple tracks with the same language. ass file if you want a different type of subtitles. This command uses -map to select all English language streams ( eng), then filters out the audio and video streams, then writes the subtitles stream to a. For example, this is how you would find the English subtitles:įfmpeg -i input.mkv -map "0:m:language:eng" -map "-0:v" -map "-0:a" output.srt only when specifying the WRONG encoding (or don't specifying it altogether) the conversion.
however, when specifying the right subtitle encoding '-subcharenc UTF-16', the conversion output is full of errors, and the resulting file has damaged subtitles.
Ffmpeg copy only subtitles error while opening encoder mp4#
You can directly refer to subtitle streams with ffmpeg's -map. i want to convert a MKV with an external UTF16 subtitle to MP4 and embed the subtitle. vtt subtitles from a video file with embedded subtitles.