[FFmpeg-user] [EXTERNAL] Re: attempting to extract srt from mpg

Francois Visagie francois.visagie at gmail.com
Fri Oct 22 13:12:46 EEST 2021

> From: ffmpeg-user [mailto:ffmpeg-user-bounces at ffmpeg.org] On Behalf Of
> Leo Butler via ffmpeg-user
> Sent: 20 October 2021 20:24
> To: Shupert, Jim via ffmpeg-user
> Cc: Leo Butler; Shupert, Jim
> Subject: Re: [FFmpeg-user] [EXTERNAL] Re: attempting to extract srt from
> mpg
> "Shupert, Jim via ffmpeg-user" <ffmpeg-user at ffmpeg.org> writes:
> > Here is an example with ffmpeg:
> >
> > $ /usr/bin/ffmpeg -f lavfi -i \
> > 'movie=4131_20150814180000.mpg[out0+subcc]' -t 00:01:00 -map s \
> > /tmp/4131_20150814180000.mpg.srt
> Top posting is discouraged on this list.
> See the documentation here for more information about the Libavfilter
> virtual device:
> https://ffmpeg.org/ffmpeg-all.html#lavfi
> There are several examples in that section, too. That may help you.
> I can't really help you, especially since your command-line copying seems
> have omitted stuff.

If I understand correctly, your command line uses the Libavfilter input
virtual device and a multimedia source.

If the success of that command line depends on either, please clarify how in
concept? I am unfamiliar with both and struggling to understand their


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