Opened 14 years ago

Closed 14 years ago

Last modified 14 years ago

#1483 closed defect (invalid)

Frontend crashes with 'poor reception' input

Reported by: kirby@… Owned by: Isaac Richards
Priority: major Milestone: unknown
Component: mythtv Version: 0.19
Severity: medium Keywords:
Cc: Ticket locked: no

Description

Watching a recording (HD content, Lost from ABC), frontend crashes, here is output from frontend screen (SVN 9151):

[mpeg2video @ 0x2aaaabfadd30]invalid cbp at 59 29 [mpeg2video @ 0x2aaaabfadd30]invalid cbp at 21 39 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 55 40 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 25 42 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 10 43 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 63 16 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 52 0 [mpeg2video @ 0x2aaaabfadd30]invalid cbp at 36 43 [mpeg2video @ 0x2aaaabfadd30]invalid mb type in I Frame at 12 2 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 34 3 [mpeg2video @ 0x2aaaabfadd30]skipped MB in I frame at 32 4 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 2 10 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 24 16 [mpeg2video @ 0x2aaaabfadd30]skipped MB in I frame at 30 17 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 49 20 [mpeg2video @ 0x2aaaabfadd30]invalid mb type in I Frame at 1 22 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 18 29 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 21 30 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 37 32 [mpeg2video @ 0x2aaaabfadd30]skipped MB in I frame at 22 35 [mpeg2video @ 0x2aaaabfadd30]skipped MB in I frame at 38 37 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 53 38 [mpeg2video @ 0x2aaaabfadd30]ac-tex damaged at 41 44 mythfrontend: cc708decoder.cpp:514: void parse_cc_packet(CC708Reader*, CaptionPacket?*): Assertion $

And watching a different stream, also somewhat damaged:

0: start_time: 7032.396 duration: 3063.616 1: start_time: 1182.315 duration: 323.726 stream: start_time: 13136.834 duration: 99041.072 bitrate=613 kb/s 2006-02-18 11:41:35.665 AFD: Opened codec 0x8da190, id(MPEG2VIDEO) type(Video) 2006-02-18 11:41:35.665 AFD: Opened codec 0x8cdf80, id(AC3) type(Audio) [mpeg2video @ 0x2aaaabf85d30]skipped MB in I frame at 46 4 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 37 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 37 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 80 37 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 38 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 38 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 80 38 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 39 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 39 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 1 40 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 40 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 40 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 80 40 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 41 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 41 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 80 41 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 42 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 42 [mpeg2video @ 0x2aaaabf85d30]skipped MB in I frame at 1 43 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 43 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 43 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 80 43 [mpeg2video @ 0x2aaaabf85d30]invalid mb type in I Frame at 0 44 [mpeg2video @ 0x2aaaabf85d30]ac-tex damaged at 40 44 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=154410 [mpeg2video @ 0x2aaaabf85d30]Warning MVs not available [mpeg2video @ 0x2aaaabf85d30]end mismatch left=151029 [mpeg2video @ 0x2aaaabf85d30]Warning MVs not available [mpeg2video @ 0x2aaaabf85d30]end mismatch left=133871 [mpeg2video @ 0x2aaaabf85d30]Warning MVs not available [mpeg2video @ 0x2aaaabf85d30]end mismatch left=153355 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=132018 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=153864 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=132435 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=157581 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=141132 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=151941 [mpeg2video @ 0x2aaaabf85d30]end mismatch left=135984 * glibc detected * malloc(): memory corruption: 0x00000000010f8700 *

Change History (2)

comment:1 Changed 14 years ago by danielk

Resolution: invalid
Status: newclosed

The best thing to do with these types of problems is to create a small sample file containing the error. Then if it crashes in an up to date mplayer report the error directly to the ffmpeg dev list; if it only crashes mythtv, reopen the ticket with a link to the small sample file. Small here meaning 5 seconds before and after the problem packet.

comment:2 Changed 14 years ago by kirby@…

Ok, fine. Sorry to be dumb about this, but how would I go about creating a 'small' mpeg from large mpeg? Just the first 1000 bytes? or what?

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