It may work with previous versions but several features won't be available (and the library is not tested with lower versions anylonger). Prerequisites ffmpeg and ffprobeįluent-ffmpeg requires ffmpeg >= 0.9 to work. You will find a lot of usage examples (including a real-time streaming example using flowplayer and express!) in the examples folder. Or as a submodule: $ git submodule add git: // /schaermu/node-fluent-ffmpeg.git vendor/fluent-ffmpeg You can still access the code and documentation for fluent-ffmpeg 1.7 here.
This is the documentation for fluent-ffmpeg 2.x. In order to be able to use this module, make sure you have ffmpeg installed on your system (including all necessary encoding libraries like libmp3lame or libx264). This is useful if you must parse the output.This library abstracts the complex command-line usage of ffmpeg into a fluent, easy to use node.js module. 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 You can directly refer to subtitle streams with ffmpeg's -map.
vtt subtitles from a video file with embedded subtitles.
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