[FFmpeg-user] Error extracting srt

[Alex Zachopoulos]

Thank you SO much Moritz!

On Fri, Aug 7, 2020 at 12:20 PM Moritz Barsnick <barsnick at gmx.net> wrote:

> On Wed, Aug 05, 2020 at 22:28:15 +0100, Alex Zachopoulos wrote:
> > This is the command I use to extract Stream #0:2 (subtitle) from file
>                                               ^^ This is an input stream
>                                                  specifier, for mapping
> > 1.mp4, on both computers:
> >
> > ffmpeg -i 1.mp4 -vn -an -codec:s:0.2 srt 1.srt
>                                  ^^ This is an output stream specifier.
>
> You want to tell ffmpeg to encode the first *output* subtitle stream as
> SRT. That's not "0:2", neither "0.2", that's just "0".
>
> If you have only one output SRT stream - which should be the case,
> since your output SRT file can only include one stream - you can omit
> the output stream specifier: "-codec:s"
>
> In your case, you can omit the "-codec:s" totally, because the suffix
> of your output file implies it.
>
> > *[srt @ 0x7fd3b300ce00] Invalid stream specifier: s:0.2.*
>
> I assume the stream specifier parser used to just ignore the ".2", and
> it no longer does, and errors out instead.
>
> Cheers,
> Moritz
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