[Bug 749433] pad-monitor test error about audio rate change

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=749433

--- Comment #5 from Tim-Philipp Müller <t.i.m at zen.co.uk> ---
LC is the most basic AAC low complexity profile. HE-AAC v1 basically encodes a
base stream with half the sample rate and then some extra info to restore the
full sample rate. Decoders that can't handle HE-AAC v1 can still decode the LC
part of the stream and output a lower quality version, this way some degree of
backwards compatibility is maintained.

So there is no 'correct' sample rate really, depending on the decoder it will
output with a rate of 24000 or 48000.

Depending what the signalled caps are exactly, I think the demuxer and/or
parser should detect this and set a rate of 48kHz in the caps here (if
signalled explicitly), BUT if a LC decoder gets plugged the fact that it
outputs something with a different rate than it got as input is not a bug.

-- 
You are receiving this mail because:
You are the QA Contact for the bug.
You are the assignee for the bug.