[mythtv] [mythtv-commits] Ticket #10396: Periodical, short audio artifacts in one the channels when upmixing to 5.1

Blazej Lewcio blazej.lewcio at googlemail.com
Wed Mar 7 14:22:06 UTC 2012

I don't know the code, but for me it sounds like a (maybe uninitialized)
pointer/index variable that gets changed after seeking/jumping and the
central speaker buffer boundaries are overwritten.  In my setup, the
distortion comes from one of the left channels only, mostly left-front, but
sometimes left-rear too. So I'd guess left channel buffer is allocated
directly after center. But then why periodical? Write address periodically
out of range due to an index shift? This is yet another theory, but I'll
check your patch later today. I also can reproduce it with diverse
contents, encoded with different codecs.

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