Wednesday, March 3, 2010

Re: [Avid-L2] Repeated MC4.0.5 crashes. Random but Resilient.

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]

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