[mythtv] AC3 playback mangled until timestretch activated

Yeechang Lee ylee at pobox.com
Sat Feb 27 05:07:29 UTC 2010

Jean-Yves Avenard <jyavenard at gmail.com> says:
> [23614] should work around those files with corrupted audio (because
> really, that's what they are)
> Let me know how it works for you...

After further testing with the original _Tonight_ recording, the
changeset force upmixes the two-track AC3; if I turn the upmixer off
via the OSD, the receiver's display switchs to Pro Logic II. Before
the changeset, with the workaround (using timestretch to switch away
from, then back to, 1.0X) the audio signal is unchanged.

This is visible via the sample clips. It is not possible to switch the
upmixer off with conan.mpg and conan3.mpg, but is possible with
conan2.mpg and conan4.mpg.

Frontend/backend:	P4 3.0GHz, 1.5TB software RAID 5 array
Backend:		Quad-core Xeon 1.6GHz, 6.6TB sw RAID 6
Video inputs:		Four high-definition over FireWire/OTA
Accessories:		47" 1080p LCD, 5.1 digital, and MX-600

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