Friday, June 13, 2014

Re: [Avid-L2] BWF import problem, MC 7.0.4

 

It looks like AMA-import and transcode of audio files is still problematic.

When I do this, I get a CM_INVALID_TRIM error when the transcode is complete, and the Avid wants to move a big chunk of the new audio files into quarantine. 

This appears to be the same bug I described at some length on this list in Feb 2013.  In my trouble-shooting at that time I found it only happened in projects with 'film options' enabled.  Kind of a drag to see still happening on a completely different system, on the latest version of Media Composer.  My system in 2013 was not fully in spec, but this current system is, so definitely a bug.

So the only good workaround for the BWF file import seems to be this:

  • Regular import of all BWF files as mono audio wav files.
  • Select the 5 monophonic clips for each group and autosequence them into a single sequence (all the clips should line up, since they all have the same timecode)
  • Auto-sync the new sequence to produce a single subclip with 5 tracks and the correct duration.

Cheers,
--Michael


On 2014-06-13, 11:24 AM, Michael Brockington brocking@sfu.ca [Avid-L2] wrote:
 

Hi Mark & Job -- thanks for the feedback.

The most salient things that jump out at me from Michael Phillips' blog (on MC 7.0.3):
   -need to check the console for reports of timecode mismatch on AMA import (not flagged anywhere else.)
   -AMA includes more metadata fields than straight import.
   -AMA has no support for pullup/pulldown or 1/4 frame resync, even after consolidate/transcode.
   -workaround needed to get proper timecode from AMA clips into an audio EDL.
   -he says that monophonic groups aren't supported on 7.0.3, but that does appear to be working on 7.0.4 -- I'm getting 1 clip with 5 tracks via AMA import, rather than 5 mono files.

It sounds like the limitations of iXML/AMA Michael mentions are not likely to be a problem for me on this job, so if there are no horror stories I think I'll give it a whirl and see how it holds up.

Thanks,
--Michael

On 2014-06-13, 10:28 AM, Mark Spano cutandcover@gmail.com [Avid-L2] wrote:
 
Haven't had any of the issues that Michael Phillips seems to have with AMA and audio in MC v7.0.3. I never bothered with AMA audio prior to this release, because of bad implementation, but it seems to be good for me in v7.0.3. I get good metadata and mono groups no problem.

Maybe OP can roll back to 7.0.3? I haven't bothered updating because of this and other egregious bugs popping up in 7.0.4.…


On Fri, Jun 13, 2014 at 1:19 PM, 'Job ter Burg (L2B)' Job_L2@terburg.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:
 
AMA'ing audio is not always the best way to go. 

Here's a detailed description of the AMA vs Import mess in audio these days:

Also, the OP's issue is popping up here as well:

On 13 jun. 2014, at 18:31, Mark Spano cutandcover@gmail.com [Avid-L2] <Avid-L2@yahoogroups.com> wrote:

 I have done AMA/transcode for AIFF, WAV, and BWAV with great success




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