I tracked the issue back to partially rendered motion effects. Since
the Avid treats all the 'off-speed' material in a sequence as
timewarps, and we were cutting mostly 23.98 material in a 59.94
sequence...everything was basically a motion effect. The editor would
render to screen for clients, go back and start trimming and
slipping..and have a bunch of partially rendered timewarps. Then
later when he would cut into them or shift them, the system would fall
apart.
Seems like those renders would go corrupt over time. As soon as I
opened up the sequence, cleared all renders including motion effects,
it was fine.
It's always in the last place you look right?
On Mar 3, 2010, at 7:48 PM, David Dawkins wrote:
> Corrupt master clips?
>
> Jeff Drury wrote:
> > practically nothing. no significant info in the logs.
> >
> > what im finding now is that i can recreate it without the media,
> so i
> > can comfortably rule that out. i can literally subclip it down to 3
> > shots, make the sequence nothing but a couple of captured 23.98
> shots,
> > take the media offline...
> >
> > and as soon as i cut into the middle of the shot (won't happen if i
> > overwrite the entire thing) it errors out, crashes, done.
> >
> >
> >
> >
> >
> >
> > On Mar 3, 2010, at 10:46 AM, Bogdan Grigoresco wrote:
> >
> >
> >> Check the Avid Fatal Error reports folder, logs might shed some
> >> light over the actual issue.
> >>
> >> cheers,
> >> Bogdan Grigoresco
> >> www.finale.tv
> >>
> >> --- On Wed, 3/3/10, Jeff Drury <jtdgroups@gmail.com> wrote:
> >>
> >> From: Jeff Drury <jtdgroups@gmail.com>
> >> Subject: [Avid-L2] Repeated MC4.0.5 crashes. Random but Resilient.
> >> To: Avid-L2@yahoogroups.com
> >> Date: Wednesday, March 3, 2010, 4:26 PM
> >>
> >>
> >>
> >> Hi All.
> >>
> >> Wondering if any one has any further thoughts/insights into a
> rather
> >>
> >> big problem i am having:
> >>
> >> Basically, we have a project with a ton of mixed media. There is
> a lot
> >>
> >> of SD dv25 material, a good amount of material at 1080i (dnx145),
> but
> >>
> >> the "hero" footage is at 1080/23.98 (dnx36). Since there were all
> >>
> >> these mixed rates, we imagined it best to work at 1080i, even
> know the
> >>
> >> bulk of the cut would be at 23.98.
> >>
> >> And for reference, we're cutting commercials here. 30 to 60 seconds
> >>
> >> time. 4 video layers max. (one of those being a color effect and
> the
> >>
> >> other being a matte).
> >>
> >> However, we found after getting into the project that the media
> >>
> >> composer would crash often with segmentation faults while working
> with
> >>
> >> the 59i sequences. The crashes are rather random and happen during
> >>
> >> simple editting tasks. Trimming, overwrites, extract/splice in the
> >>
> >> timeline. They seem to get more frequent as time goes by.
> >>
> >> We have tried, as far as I can imagine, everything. Starting
> simple,
> >>
> >> we changed out the user, project, mcstate and site settings
> files. The
> >>
> >> project was on unity, but we moved that locally. We tried it with
> an
> >>
> >> adrenaline connected and without. Our other office tried it with a
> >>
> >> nitris. We tried Snow leopard and Leopard. We tried several
> completely
> >>
> >> different computers. Still got the errors.
> >>
> >> We've disabled and removed video tracks and audio tracks. Cleared
> all
> >>
> >> the renders, rerendered. Flat out removed every effect we could.
> >>
> >> If we unmount the media drives, the problem subsides...but of
> course
> >>
> >> it can be rather difficult to cut when you cant actually see the
> >>
> >> footage.
> >>
> >> Now that might make you think there is some media corruption issue,
> >>
> >> but we have the all of the media local and it was backed up to a
> >>
> >> different system immediately after being captured. In the rare case
> >>
> >> that I have found actual source media corruption, I have found
> that it
> >>
> >> shows read errors when backing up via retrospect. None of this
> media
> >>
> >> does. It's all clear of errors during copy and further the
> crashes can
> >>
> >> happen practically anywhere. No particilar clip fails alone. We
> also
> >>
> >> loaded the backup drive on to another computer, same issues.
> >>
> >> And no these are not FireWire drives either. Internal Sata.
> >>
> >> So, what has worked?
> >>
> >> So far...
> >>
> >> Since most of the current media being used was still 23.98 we
> deleted
> >>
> >> the mattes and modified the sequences over to 23.98. Created a new
> >>
> >> project at 23.98 and are working from there. It took a good
> amount of
> >>
> >> time to get all we needed moved over, but it's running. No
> crashes for
> >>
> >> the last 5 hours.
> >>
> >> My concern is though, we are going to have to start working with
> the
> >>
> >> 30i and 59i material shortly. It seems rather unkosher to me to
> try to
> >>
> >> work with that at 23.98. We are goin to see how it plays, but it's
> >>
> >> widely being seen as an issue.
> >>
> >> So, any thoughts? Why are these 59i sequences failing so regularly?
> >>
> >> Any way to work around?? I got a partner in the company and 4
> intense
> >>
> >> clients right behind me waiting for an answer to the problem.
> >>
> >> Thanks.
> >>
> >> [Non-text portions of this message have been removed]
> >>
> >>
> >>
> >>
> >
> >
> >
> > [Non-text portions of this message have been removed]
> >
> >
> >
> > ------------------------------------
> >
> > Please donate to the Red Cross to help those in earthquake ravaged
> Chile: http://tinyurl.com/y8pgceq
> >
> > Search the offical complete Avid-L archives at: http://archives.bengrosser.com/avid/
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
>
> --
> David Dawkins
> 780-905-9121
> dawk2@shaw.ca
>
> [Non-text portions of this message have been removed]
>
>
>
[Non-text portions of this message have been removed]
------------------------------------
Please donate to the Red Cross to help those in earthquake ravaged Chile: http://tinyurl.com/y8pgceq
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