Output from mythtranscode:

$ mythtranscode -i 1311_20090916185900.mpg -o /dev/null -p 29 --showprogress
...
2009-09-17 11:13:53.922 Processed: 159328 of 222734 frames(2658 seconds)
2009-09-17 11:13:58.932 Processed: 159770 of 222734 frames(2665 seconds)
2009-09-17 11:14:02.575 Resizing from 640x480 to 640x368
2009-09-17 11:14:02.583 NVP: Disabling Audio, params(0,0,0)
2009-09-17 11:14:02.637 Resizing from 1280x720 to 640x368
2009-09-17 11:14:03.007 [mpeg2video @ 0x7fb467c3be70]ac-tex damaged at 71 2
2009-09-17 11:14:03.008 [mpeg2video @ 0x7fb467c3be70]Warning MVs not available
Segmentation fault (core dumped)

Here's the best I can do for a backtrace:

#0  0x00007fb465fca530 in lame_encode_buffer_interleaved () from /usr/lib/libmp3lame.so.0
#1  0x00007fb468903357 in NuppelVideoRecorder::WriteAudio () from /usr/lib/libmythtv-0.21.so.0
#2  0x000000000041f1bb in ?? ()
#3  0x00000000004151f7 in ?? ()
#4  0x00007fb4625b85a6 in __libc_start_main () from /lib/libc.so.6
#5  0x0000000000409e79 in ?? ()
#6  0x00007fff7107a348 in ?? ()
#7  0x000000000000001c in ?? ()
#8  0x0000000000000008 in ?? ()
#9  0x00007fff7107b5ba in ?? ()
#10 0x00007fff7107b5c8 in ?? ()
#11 0x00007fff7107b5cb in ?? ()
#12 0x00007fff7107b5e3 in ?? ()
#13 0x00007fff7107b5e6 in ?? ()
#14 0x00007fff7107b5f0 in ?? ()
#15 0x00007fff7107b5f3 in ?? ()
#16 0x00007fff7107b5f6 in ?? ()
#17 0x0000000000000000 in ?? ()