[vlc-devel] RFC: vlc_player: SPU tracks: subtitles, DVD/Bluray menus and teletext

Steve Lhomme robux4 at ycbcr.xyz
Mon Oct 15 15:20:03 CEST 2018


On 15/10/2018 14:48, Thomas Guillem wrote:
> Hello,
>
> I have some questions about how we expose the SPU track listing with the future vlc_player.
>
>   - 1/ Do we want to expose all SPUS from the track listing ? Is it coherent to expose the DVD menu track (the one that highlight) ? IMHO, it should be hidden (but we need to patch dvdnav and maybe add  a new variable in subs_format_t to detect it).

Why not make it available ? Users may want to disable menu highlights. 
On a standard DVD player I guess it's not even allowed. But in VLC we 
may allow this. Can't we list the SPUs and the kind of track they are ? 
Then it's a UI choice to display/select some type and not others.

>
>   - 2/ What about teletext ? I think we want to expose the teletext page that are closed captions, (generally magazine=8, page >= 0x88), and hide the teletext menu (magazine = 1, page = 0) from the track listing. Users will be able to select teletext subtitles via the subtitle track menu, and activate the teletext menu via a specfic vlc player call. Questions: are we sure that the menu is always 100 ?
>
>   - 3/ Do we want to keep the name "SPU" ? It's a VLC internal term. If we hide SPU tracks that are not subtitles (DVD/Bluray menus and teletext menu), we could name it "Subtitle".
>
>  From the UI perspective: QT and maybe all others UI  have a Subtitle menu that allow to select any SPU (even menus). I don't think we want to keep that.
>
> Opinions are welcome,
>
> Regards,
> Thomas.
> _______________________________________________
> vlc-devel mailing list
> To unsubscribe or modify your subscription options:
> https://mailman.videolan.org/listinfo/vlc-devel



More information about the vlc-devel mailing list