[Bug 723327] New: matroskademux: Set buffer offsets for output
GStreamer (bugzilla.gnome.org)
bugzilla at gnome.org
Thu Jan 30 15:09:08 PST 2014
https://bugzilla.gnome.org/show_bug.cgi?id=723327
GStreamer | gst-plugins-good | git
Summary: matroskademux: Set buffer offsets for output
Classification: Platform
Product: GStreamer
Version: git
OS/Version: Linux
Status: UNCONFIRMED
Severity: normal
Priority: Normal
Component: gst-plugins-good
AssignedTo: gstreamer-bugs at lists.freedesktop.org
ReportedBy: self at brendanlong.com
QAContact: gstreamer-bugs at lists.freedesktop.org
GNOME version: ---
I'm looking at using the buffer offset as a unique identifier for
caption/subtitle cues. This HTML mailing list thread is relevant:
http://lists.w3.org/Archives/Public/public-html/2014Jan/0083.html
Specifically:
> Is the UA expected to keep a unique internal id for each in-band
> TextTrackCue it creates so that it doesn't reinsert a cue that
> was inserted previously, but was modified?
To which the answer appears to be, "yes".
The worst-case scenario for this seems to be WebVTT, where the *only* way to
uniquely identify cues is by where they appear in a file:
00:00:00 --> 00:00:05
Lorem ipsum
00:00:00 --> 00:00:05
Lorem ipsum
So, I'd like to use GST_BUFFER_OFFSET, but it looks like it never sets set for
any caption or subtitle formats. As a proof-of-concept, I'd like to implement
this for Matroska/SSA, since it seems to be the best-supported cue format right
now. Does that make sense?
--
Configure bugmail: https://bugzilla.gnome.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the QA contact for the bug.
You are the assignee for the bug.
More information about the gstreamer-bugs
mailing list