This IS the Avid L2: Re: [Avid-L2] IMX files with 4 audio tracks

Thursday, October 3, 2013

Re: [Avid-L2] IMX files with 4 audio tracks

It's all bandwidth, probably.

With Best Wishes,
Roger Shufflebottom
+44 7973 543 660

From: Nigel Gourley <avid-l@outpostfacilities.co.uk>
To: Avid-L2@yahoogroups.com
Sent: Thursday, 3 October 2013, 11:05
Subject: RE: [Avid-L2] IMX files with 4 audio tracks

Ah I have the answer..

So if you export 16bit audio you get 8 audio tracks and if you export 24bit audio then you only get 4 audio tracks!

Kind of makes sense but the 16/24 selection is deciding the number of tracks!

N

From: Avid-L2@yahoogroups.com [mailto:Avid-L2@yahoogroups.com] On Behalf Of Jon Wilkman
Sent: 03 October 2013 00:41
To: Avid-L2@yahoogroups.com
Subject: Re: [Avid-L2] IMX files with 4 audio tracks

OK. Thanks.
Jon
On 10/2/2013 4:28 PM, SurferRob@aol.com wrote:

Using File > Export XDCAM OP1a in a SD project and selecting an IMX codec will create an OP1a MXF file with 4 channels of audio.

---In avid-l2@yahoogroups.com, <bouke@...> wrote:
But, did you try my solution?
For a lot of workflows it might be the easiest, cheapest, fastest way.

Bouke

VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
From: Nigel Gourley
To: Avid-L2@yahoogroups.com
Sent: Wednesday, October 02, 2013 7:16 PM
Subject: RE: [Avid-L2] IMX files with 4 audio tracks

Yes definitely OP1A MXF files…
Even if you have a sequence with only 2 audio tracks when you export as XDCAM it puts 8 audios in there even though they are silent..
Nige
From: Avid-L2@yahoogroups.com [mailto:Avid-L2@yahoogroups.com] On Behalf Of Mark Spano
Sent: 02 October 2013 16:09
To: Avid-L2@yahoogroups.com
Subject: Re: [Avid-L2] IMX files with 4 audio tracks

Here's the real question. Are you sure they want MXF? I have clients who want IMX with 4 channels and they all want QuickTime MOV files with that spec. I've never seen someone asking for XDCAM MXF with only 4 channels.
On Wed, Oct 2, 2013 at 10:38 AM, Edit B <bouke@...> wrote:

< span>I believe the trouble is he ends up with 8 instead of 4...
Bouke
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
From: Craig Rutledge
To: Avid-L2@yahoogroups.com
Sent: Wednesday, October 02, 2013 4:37 PM
Subject: RE: [Avid-L2] IMX files with 4 audio tracks

Mixdown to four tracks of audio. Select video and only those four audio tracks. Export. Even in stereo mode it should export four channels.
From: Avid-L2@yahoogroups.com [mailto:Avid-L2@yahoogroups.com] On Behalf Of Edit B
Sent: Wednesday, October 02, 2013 7:21 AM
To: Avid-L2@yahoogroups.com
Subject: Re: [Avid-L2] IMX files with 4 audio tracks

Nope.
Quicktime is a very handy format to change attributes in a destructive way. Other formats are way more difficult in that aspect.
(The destructive part is what makes QTchange so popular, it's fast...)
MXF is a tricky one. Lots of flavours, and most of the time high compatibility issues.
So i sometimes do custom work on MXF, but it's hard to satisfy every possible target.
(Especially if people start brining in Baton stuff.)
Bouke
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN, the Netherlands
+31 24 3553311
----- Original Message -----
From: Mikeparsons.tv</ a>
To: Avid-L2@yahoogroups.com
Sent: Wednesday, October 02, 2013 2:08 PM
Subject: Re: [Avid-L2] IMX files with 4 audio tracks

Will qt change open mxf?
I love qtchange I recently had hours of natural history rushes where the director was talking to himself in pretty bad language - stay there eat now oh for &&&$& sake you @@&@&( and so on.
Good laugh during edit until client requested a copy of the rushes! Qtchange delete audio done.
:)
Mike

On 2 Oct, 2013, at 6:39 pm, "Edit B" <bouke@...> wrote:

Depending on compatibility issues, you could use FFmbc to copy video / first 4 audio and rewrap it in a new MXF file.
Or, if you want to spend money, Episode or something might be able to do it.
Bouke
VideoToolShed
van Oldenbarneveltstraat 33
6512 AS NIJMEGEN, the Netherlands< br>+31 24 3553311
----- Original Message -----
From: Nigel Gourley
To: Avid-L2@yahoogroups.com
Sent: Wednesday, October 02, 2013 1:03 PM
Subject: [Avid-L2] IMX files with 4 audio tracks

HI there,
We have a client that wants XDCAM delivery with only 4 audio tracks. How would we do this? We can't export .MXF files other than XDCAM and we can't chose the number of audio tracks… What could we use?
Thanks
NIge