[FFmpeg-user] How to extract DVD subtitle from this VOB file?

[Adi Marvillo]

Am 2018-03-08 um 09:28 schrieb Farhad Mohammadi Majd:
> Hello, I have ffmpeg v3.2.9 on Debian v9.3
>
> I have searched WWW for suitable command but none of them worked for
> me, and ffmpeg is complex.
>
> == My file ==
> $ ffmpeg -i VTS_01_1.VOB
> .....
> .....
> .....
> .....
> Input #0, mpeg, from 'VTS_01_1.VOB':
>   Duration: 00:24:40.83, start: 0.040033, .....
>     Stream #0:0[0x1bf]: Data: dvd_nav_packet
>     Stream #0:1[0x1e0]: Video: mpeg2video (Main), .....
>     Stream #0:2[0x80]: Audio: .....
>     Stream #0:3[0x21]: Subtitle: dvd_subtitle
>     Stream #0:4[0x20]: Subtitle: dvd_subtitle
>
> =====
>
> I need to those dvd_subtitle(s). How to extract them?
>
> THANKS
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I guess your DVD-Film is concatenated of the files:
for i in {1..5}
    do
    echo "file 'VTS_01_i.VOB'";  
    done

right? in this case you have to extract the whole concatenated VOB with
mplayer and dump it into a file before you can  apply ffmpeg

[code]
mplayer dvd://TITLE -dumpstream -dumpfile ~/media/movie.vob # be sure to
select the correct TITLE - in this case it would be 1
ffmpeg -i ~/media/movie.vob -g 25 -keyint_min 3 -vf
"crop=x=14:out_w=in_w-32:y=76:out_h=in_h-152" -aspect "16:9" -map 0:v
-c:v libx264 -map 0:a -c:a copy  OUTPUTFILE.mkv # apply ffmpeg
[/code]

mplayer can extract subtitles as well as much as I know. Let us know how
you've done it, after you manage it....