[vlc-devel] Difference between --sub-filter and --sub-source

Kaarlo Räihä kaarlo.raiha at gmail.com
Wed Mar 28 07:30:42 CEST 2012

27. maaliskuuta 2012 23.51 Peter Tap <ptrtap at yahoo.com> kirjoitti:

> Folks,
> What is the difference between "--sub-filter" and "--sub-source" command
> line options?

--sub-source=<string> Subpictures source module This adds so-called
"subpicture sources". These filters overlay some images or text over the
video (like a logo, arbitrary text, ...).
--sub-filter=<string> Subpictures filter module This adds so-called
"subpicture filters". These filter subpictures created by subtitles
decoders or other subpictures sources.

> In my case, I have developed a video filter that displays text on screen.
> This is very similar to the marquee filter. However, when I run vlc, just
> --sub-filter="mytest" or --sub-source="mytest" doesn't work. I need to
> specify both the options to get my filter to work. I am just trying to
> understand why I need both these options.
> Thank you in advance for your help.
> Regards,
> Peter
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