[FFmpeg-user] Which file formats can hold image subtitles (dvdsub) without other streams

bbb ffmpeg-user at bugblatterbeast.de
Mon Dec 4 20:18:34 EET 2023

Thanks Mark,

as Nicolas already pointed out, I was wrong about the mkv format. I see 
you are using it for just a subtitle stream too in the first step.

Though my problem is already solved with that, what you wrote looks very 
interesting. You are able to convert image subtitles to text? I really 
should check out SubtitleEdit and that MKV toolkit too.


On 12/4/23 18:11, Mark Filipak wrote:
> Hi, Below is a Windows CMD I use. It employs ffmpeg, mkvextract, and 
> SubtitleEdit.
> The MKV made has only the subtitles -- no video required.
> If SubtitleEdit has been properly trained, the results are excellent.
> -- Mark.
> : Convert hdmv_pgs_subtitle to subrip.
> :   index file: %TARGETPATH%\%NAME%.idx  //contains the 
> subtitle-timestamps
> :   bitmap file: %TARGETPATH%\%NAME%.sub //contains the subtitle-bitmaps
> : This assumes the zeroth subtitle stream (0:s:0) is desired.
> : '%TARGETPATH%\%SOURCE%.mkv', '%TARGETPATH%\%NAME%.idx', and 
> : are preserved.
> set NAME=
> set M2TS=
> ffmpeg -i "%M2TS%" -map 0:s:0 -s 1920x1080 -c:s dvdsub -f matroska 
> "C:\Program Files\MKVToolNix\mkvextract" "%TARGETPATH%\%NAME%.mkv" 
> tracks 0:"%TARGETPATH%\%NAME%"
> "C:\Program Files\Subtitle Edit\SubtitleEdit" "%TARGETPATH%\%NAME%.idx"
> pause

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