[Bug 679708] playbin: read ahead files, better support for network shares and other slow inputs

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=679708
  GStreamer | gst-plugins-base | unspecified

--- Comment #7 from Edward Hervey <bilboed at gmail.com> 2013-06-13 07:02:33 UTC ---
We also want to make sure it works efficiently in src-pull/sink-pull mode with
those sources, but then it could do some read-ahead.

I also wonder how efficient it would be with downstream elements that do
pull_range with a pre-allocated (and configured) GstBuffer (like qtdemux) ?
 We'd end up doing double-copies... unless we use a mmap allocator (but then
there's no guarantee the underlying data would be available quickly ?)

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