ffmpeg - Subtitles - Check if ffmpeg supports manipulating subtitles

ffmpeg uses the subtitles filter to add subtitles on top of the input video.

The subtitles filter requires a build with libavcodec and libavformat to convert the passed subtitle files.

ffmpeg uses the libsrt library to add SRT subtitles on top of the input video.

The libsrt library is a portable subtitle renderer for the SRT subtitle format.
It converts the input subtitle file to an SRT file.

ffmpeg uses the subtitles filter and the libass library to add ASS subtitles on top of the input video.

The libass library is a portable subtitle renderer for the ASS subtitle format.
It converts the input subtitle file to an ASS file.

Check if libass Is enabled

ffmpeg —version

returns:

ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers
...
--enable-libass
...

NOTE: If you can see —-enable-libass in the configuration, libass is enabled.

ffmpeg —version

returns:

ffmpeg version 6.1.1-3ubuntu5 Copyright (c) 2000-2023 the FFmpeg developers
...
--enable-libsrt
...

NOTE: If you can see —-enable-libsrt in the configuration, libsrt is enabled.