[mythtv-commits] Ticket #11048: Segfaults on BBC recordings
MythTV
noreply at mythtv.org
Sun Aug 26 13:36:06 UTC 2012
#11048: Segfaults on BBC recordings
---------------------------------+-----------------------------------------
Reporter: Andy Boff | Type: Bug Report - Crash
<mythtv@…> | Priority: minor
Status: new | Component: MythTV - Video Decoding
Milestone: unknown | Severity: medium
Version: Master Head | Ticket locked: 0
Keywords: |
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(Version set to "Master Head" as 0.26beta isn't available)
MythFrontend/Mythavtest segfaults when attempting to play back all tested
recordings from BBC4, and a majority from BBC2 (both FreeView). I don't
have any BBC3 recordings to test with.
Having run with "mythavtest --loglevel debug -v libav", it would appear
that the segfault occurs whilst parsing the MPEG streams (of which there
are several data streams in addition to the AV & subtitle streams).
Mythtranscode --mpeg2 also segfaults on the files (presumably for the same
reason). Processing the files with "ffmpeg -i <file> -acodec copy -vcodec
copy <outfile>" results in a file that Myth will play.
Some of the recordings that segfault have previously played back fine
under 0.25-fixes.
Attached should be a backtrace for the segfault (generated running
mythfrontend under gdb), mediainfo and "ffmpeg -i" for an affected file,
and a log from running "mythavtest -v libav --loglevel debug" for the same
file.
A gdb backtrace of mythavtest for that same file is not included, as the
file plays back successfully when running under gdb, but segfaults when
run normally (possibly indicating a race condition?)
Version info:
{{{
> mythavtest --version
Please attach all output as a file in bug reports.
MythTV Version : v0.26-beta-32-g7203f17
MythTV Branch : master
Network Protocol : 75
Library API : 0.26.20120807-1
QT Version : 4.8.1
Options compiled in:
linux profile use_hidesyms using_alsa using_oss using_pulse
using_pulseoutput using_backend using_bindings_perl using_bindings_python
using_bindings_php using_crystalhd using_dvb using_firewire using_frontend
using_hdhomerun using_ceton using_hdpvr using_iptv using_ivtv
using_joystick_menu using_libcec using_libcrypto using_libdns_sd
using_libxml2 using_lirc using_mheg using_opengl_video using_qtwebkit
using_qtscript using_qtdbus using_v4l2 using_x11 using_xrandr using_xv
using_bindings_perl using_bindings_python using_bindings_php
using_mythtranscode using_opengl using_vaapi using_vdpau
using_ffmpeg_threads using_live using_mheg using_libass using_libxml2
}}}
--
Ticket URL: <http://code.mythtv.org/trac/ticket/11048>
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