Opened 20 years ago
Closed 19 years ago
Last modified 19 years ago
#1651 closed defect (fixed)
mythtranscode segfaults during mpeg2 => mpeg2 transcode
| Reported by: | Lueddich | Owned by: | Geoffrey Hausheer |
|---|---|---|---|
| Priority: | minor | Milestone: | 0.20 |
| Component: | mythtv | Version: | 0.19 |
| Severity: | medium | Keywords: | mythtranscode lossless mpeg2 segfault |
| Cc: | xris | Ticket locked: | no |
Description
Transcoding recordings with losless option segfaults mythtranscode. The output file grows and grows and short under the size of the original file, mythtranscode segfaults. The original filesize is 2641MB, the new one 2405MB, but theres nothing being cutted off. I also have 4 new files in the directoryafter the error occuring:
-rwx------ 1 mythtv mythtv 0 Apr 5 16:19 ins0.enc -rwx------ 1 mythtv mythtv 0 Apr 5 16:19 ins0.enc.yuv -rwx------ 1 mythtv mythtv 0 Apr 5 16:19 ins0.enc.yuv.enc -rwx------ 1 mythtv mythtv 0 Apr 5 16:19 ins0.yuv
I attached several logfiles including a backtrace, but I don't know wether the backtracing really worked. I did my best! ;)
If you would like to see what I did including the install of build 9647 you could have a look at http://mysettopbox.tv/phpBB2/viewtopic.php?t=9489&postdays=0&postorder=asc&start=0
Attachments (7)
Change History (25)
by , 20 years ago
| Attachment: | mythbackend_log.txt added |
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by , 20 years ago
| Attachment: | mythtranscode_commandline.txt added |
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by , 20 years ago
| Attachment: | mythtranscode_commandline_verbose_all.txt added |
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by , 20 years ago
| Attachment: | mythtranscode_commandline_strace.txt added |
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by , 20 years ago
| Attachment: | mythtranscode_commandline_gdb.txt added |
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comment:1 by , 20 years ago
by , 20 years ago
| Attachment: | NUV2DISC-log.txt added |
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comment:2 by , 20 years ago
I also was having this problem. Installing the latest ffmpeg from cvs appears to have cleared up issue.
comment:3 by , 20 years ago
In my case, reinstalling ffmpeg didn't work... :( The error is still the same...
comment:4 by , 20 years ago
I am still having it as well.
I transcoded a file without a cutlist and finished fine. Transcoding with cutlist causes to segfault on what appears to be the second pass.
comment:5 by , 20 years ago
| Owner: | changed from to |
|---|---|
| Status: | new → assigned |
You need to rerun the gdb trace after enabling a debug build. Note that mythtranscode has nothing to do with ffmpeg directly. mythtranscode only uses libraries included within myth, so it uses libmythavcodec, libmythavformat, and libmythmpeg2. Installing other packages will have no impact on the results.
comment:6 by , 20 years ago
| Owner: | changed from to |
|---|---|
| Status: | assigned → new |
comment:7 by , 20 years ago
I'll do my very best ;)
At the moment, I try to find out, how to rebuild mythtv including the svn-update within KnoppMyth... When I have results these days, I'll post them ASAP.
Thanks!
by , 20 years ago
| Attachment: | mythtranscode_commandline_gdb_debug_build.txt added |
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comment:8 by , 20 years ago
I did it, a guy helped me with rebuilding...
Attached the mythtranscode_commandline_gdb_debug_build.txt
Is there still something missing? Can I do anything?
comment:9 by , 20 years ago
fyi, I see this with a handful of my firewire-encoded shows, too.. The file will often grow only a small amount (usually to the first cut, I think) and then mythtranscode segfaults. I tried to get a backtrace but it contained no useful info, and I got too busy to figure out what else I could do. Just thought I'd chime in with a "please fix." :) And of course, let me know if I can do anything to help.
comment:10 by , 20 years ago
| Cc: | added |
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comment:11 by , 20 years ago
| Priority: | minor → major |
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I updated to build 9787 yesterday, but the error is still there... Can I do anything?
comment:12 by , 19 years ago
| Priority: | major → minor |
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comment:13 by , 19 years ago
| Keywords: | lossless mpeg2 added |
|---|
Hey Geoffrey,
are you still on this? I'm still having these problems... :( During the last day, I did a clean install of KnoppMyth R5C7 and updated MythTV to the svn from June 01. Same Error...
Can I do anything? Could I send you a short recording to have a look at it? ... ?
Please help me! ;) MythTV is such a great thing, but without this MPEG2-cutting it's not possible to produce nice DVDs from recordings... :( That's a pity!!
Thank you!
comment:14 by , 19 years ago
| Milestone: | → 0.19.1 |
|---|
comment:15 by , 19 years ago
Hi,
is there anybody watching this ticket or even working on it? Is there a chance, that this is fixed? If not, it would be nice to inform me... I could stop watching this ticket every 2 days in that case...
Thanks!
follow-up: 17 comment:16 by , 19 years ago
| Resolution: | → fixed |
|---|---|
| Status: | new → closed |
If anybody at any time reads this... The problem is gone! I updated to SVN 10293 yesterday and I can transcode now using the losless-option...
Great work...
comment:17 by , 19 years ago
Replying to Lueddich:
If anybody at any time reads this... The problem is gone! I updated to SVN 10293 yesterday and I can transcode now using the losless-option...
Great work...
Was working for me but now seems broken in a recent SVN of release-0-19-fixes (up through changeset 10505?). Any attempt at a mpeg2->mpeg2 transcode ends with an "Unknown socket closing" error in the backend logs. Running the commands by hand shows that it's segfaulting at or near the end.
Even Nuv2Disc has a error trying to cut commercials, I add the logfile. I am using KnoppMyth R5B7 including MythTV 0.19, updated from KnoppMyth R4A30.2 including MythTV 0.18 and updated to SVN build 9647. Could it be a database-problem, that mythtranscode and nuv2disc can't use the cut points?