[vlc-devel] [PATCH 02/10] Add secondary property to decoder

Devin Heitmueller dheitmueller at kernellabs.com
Tue May 7 15:24:38 CEST 2019

On Tue, May 7, 2019 at 3:11 AM Jean-Baptiste Kempf <jb at videolan.org> wrote:
> On Tue, 7 May 2019, at 09:09, Roland Bewick wrote:
> > Yes, but do you feel like this is going to be something that many people
> > will actually use? or just introduce more complexity than is required?
> Absolutely not. I've seen many dual-spu requests, never tri-spu requests.

I'm wondering though if this basic feature could help in another case
- where subtitle streams are created by the demux in indeterminate
order.  If this were actually a "priority" field, then we could ensure
that the list of subtitles was properly ordered in the GUI.  Right now
we have issues with closed captions where CC3/CC4 get created before
CC1/CC2, and having a discrete priority field would address that
without having to move around the spu-indexes for the entries in the

On the other hand, the priority in which subtitles from a given stream
get rendered in the GUI may be different than the order in which the
streams are listed.  That said, it's not like we're proposing that the
GUI let the user decide which subtitle streams are the primary versus
secondary, right?


Devin J. Heitmueller - Kernel Labs

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