mythtranscode 0.23 crashed with SIGSEGV in memcpy()

Binary package hint: mythtv

I've tried to transcode this twice and it crashed both times.

ProblemType: Crash
DistroRelease: Ubuntu 10.10
Package: mythtv-transcode-utils 0.23.1+fixes26437-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-28.49-generic 2.6.35.11
Uname: Linux 2.6.35-28-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
CrashCounter: 1
Date: Thu Mar 24 16:43:09 2011
ExecutablePath: /usr/bin/mythtranscode
Installed_mythplugins-dbg: 0.0
Installed_mythtv-dbg: 0.23.1+fixes26437-0ubuntu1
ProcCmdline: mythtranscode --profile autodetect --chanid 10950 --starttime 20110324150000 --fifodir /tmp/mythnuv2mkv5508
ProcEnviron: PATH=(custom, user)
SegvAnalysis:
 Segfault happened at: 0x7f989f18bb30 <memcpy+160>: movzbl (%rsi),%eax
 PC (0x7f989f18bb30) ok
 source "(%rsi)" (0x00001027) not located in a known VMA region (needed readable region)!
 destination "%eax" ok
SegvReason: reading NULL VMA
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 memcpy () at ../sysdeps/x86_64/memcpy.S:161
 AudioReencodeBuffer::AddSamples (this=0xa85a80, buffer=0x7f9892b1b010 "b\001\217\001\220\001\303\001\232\001\316\001{\001\253\001?\001h\001", <incomplete sequence \362>, samples=1536, timecode=4135) at transcode.cpp:91
 NuppelVideoPlayer::AddAudioData (this=0xa45c90, buffer=0x7f9892b1b010 "b\001\217\001\220\001\303\001\232\001\316\001{\001\253\001?\001h\001", <incomplete sequence \362>, len=6144, timecode=4135) at NuppelVideoPlayer.cpp:4025
 AvFormatDecoder::GetFrame (this=0xa86320, decodetype=kDecodeAV) at avformatdecoder.cpp:4211
 NuppelVideoPlayer::TranscodeGetNextFrame (this=0xa45c90, dm_iter=..., did_ff=0x7fff9123aeb8, is_key=0x7fff9123b269, honorCutList=false) at NuppelVideoPlayer.cpp:5950
Title: mythtranscode crashed with SIGSEGV in memcpy()
UserGroups: audio cdrom dialout video