Opened 17 years ago
Last modified 14 years ago
#1097 new defect
mencoder freezing with 100% CPU messages on a broken m4v file
| Reported by: | Owned by: | reimar | |
|---|---|---|---|
| Priority: | important | Component: | demuxer |
| Version: | HEAD | Severity: | major |
| Keywords: | Cc: | reimar, compn, admin@… | |
| Blocked By: | Blocking: | ||
| Reproduced by developer: | no | Analyzed by developer: | no |
Description
Download http://blip.tv/file/get/Map-games20080523bonushd241.m4v. It apparently has some headers broken as evident from:
mencoder Map-games20080523bonushd241.m4v -o Map-games20080523bonushd241.avi
MEncoder dev-SVN-r26924-4.2.1 (C) 2000-2008 MPlayer Team
CPU: Intel(R) Xeon(TM) CPU 2.40GHz (Family: 15, Model: 2, Stepping: 7)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
success: format: 0 data: 0x0 - 0xa8fd000
libavformat file format detected.
LAVF: no audio or video headers found - broken file?
ISO: Unknown File Type Major Brand: M4VH
MOV: missing data (mdat) chunk! Maybe broken file...
<<<freeze, with top showing 100% cpu.
BTW, the 1.0rc2 freezes but in addition floods with endless "Seek failed":
Seek failed
Seek failed
Seek failed
Seek failed
Seek failed
Seek failed
Seek failed
...
While it's true that the file may be broken, mencoder shouldn't go into an endless loop using 100% cpu (or flood the disk with Seek failed until out of space - brought my machine down a few times).
Change History (4)
comment:1 by , 17 years ago
| Cc: | added |
|---|
comment:3 by , 14 years ago
| Cc: | added |
|---|
well its not using 100% cpu here. but still seems to seek into whole file.
comment:4 by , 14 years ago
| Owner: | changed from to |
|---|
Actually, just trying it with the very latest HEAD on another machine has the same flood:
mencoder Map-games20080523bonushd241.m4v -o a.avi
MEncoder dev-SVN-r26968-4.2.1 (C) 2000-2008 MPlayer Team
CPU: Intel(R) Xeon(TM) CPU 2.80GHz (Family: 15, Model: 2, Stepping: 9)
CPUflags: Type: 15 MMX: 1 MMX2: 1 3DNow: 0 3DNow2: 0 SSE: 1 SSE2: 1
Compiled for x86 CPU with extensions: MMX MMX2 SSE SSE2
success: format: 0 data: 0x0 - 0xa8fd000
libavformat file format detected.
LAVF: no audio or video headers found - broken file?
ISO: Unknown File Type Major Brand: M4VH
MOV: missing data (mdat) chunk! Maybe broken file...
Seek failed
Seek failed
Seek failed
Seek failed
Seek failed
...
Not sure why there's no flood with the version in the topic.