[gstreamer-bugs] [Bug 613094] [flvmux] put more info (like width and height) in the metadata

GStreamer (bugzilla.gnome.org) bugzilla at gnome.org
Wed Mar 17 02:33:36 PDT 2010


https://bugzilla.gnome.org/show_bug.cgi?id=613094
  GStreamer | gst-plugins-good | git

--- Comment #5 from Sebastian Dröge <slomo at circular-chaos.org> 2010-03-17 09:33:33 UTC ---
(In reply to comment #4)

> Putting the PAR has a lot of sense, because it allows players to scale the
> display accordingly (and using the Flash APIs you can't get the PAR from the
> actual encoded video data, so you need to rely on the textual stuff in the
> metadata). The DAR doesn't make sense, right? Because you'd put in the DAR of
> the machine on which you are encoding... And Flash can get the DAR of the
> display that's playing the content, so that's not really necessary.

Well, the PAR describes the width/height ratio of a pixel while the DAR
describes the same for a complete frame. Typical DARs are 16:9, 4:3, etc.

Together with the width/height you can convert from PAR to DAR and back.

> I think filesize, maybe the framerate and maybe codec info would be useful
> (filesize in non-live case only).

Yes, these might indeed be useful to add.

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