[FFmpeg-user] subtitles extraction

[ನಾಗೇಶ್ ಸುಬ್ರಹ್ಮಣ್ಯ (Nagesh S)]

Just curious...is this about hardened subtitles? Or also applicable in
cases where the video does not show any subs by default?

Sent from phone. Pardon spelling and grammar mistakes.
On 24 Dec 2013 11:50, "Carl Eugen Hoyos" <cehoyos at ag.or.at> wrote:

> Alessandro Magni <magni <at> inrim.it> writes:
>
> > 1) ffmpeg -i mpfc.iso -vn -an -c copy a.srt
> >
> > ffmpeg version 1.2.4 Copyright (c) 2000-2013 the FFmpeg developers
>
> (This is old.)
>
> >    Stream #0:2 -> #0:0 (copy)
>
> The srt file format only supports srt (and text and subrip)
> subtitles, you cannot mux ("copy") dvdsub into the file, just
> as you cannot put mp3 into an aac file.
>
> >    Stream #0:2 -> #0:0 (dvdsub -> srt)
>
> dvbsub is a bitmap subtitle format, srt is text-based but
> since FFmpeg does not contain any ocr routines, you cannot
> convert a bitmap subtitle into a text-based subtitle format.
>
> Merry Christmas, Carl Eugen
>
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