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.
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