AVI Stereo Pair Issue in SD in FCP7 at DVinfo.net

Steve Cottrell · May 3rd, 2014, 09:52 AM

For the next few months I will be shooting in FAT SD on a PMW-400 producing AVI files. The problem is that although I have all appropriate audio settings on the camera set to give dual mono, when I drag in the AVIs onto an FCP7 timeline, the audio appears as a linked stereo pair.

If I shoot FAT HD, then bring in the footage using XDCAM Transfer via the FCP7 Import menu, then all the footage appears as normal on the timeline - dual unlinked mono tracks (just 1 and 2 in this instance).

Having done a couple of hours of web research and testing, I can find no way to get the AVIs' audio tracks to be unlinked mono tracks out of the camera.

It seems my alternatives are these:

1/ Unlink the stereo pair in the timeline, get rid of (say) track 2 when I'm after the content on track 1, then pan track 1 to centre and apply normalisation gain to get it where I want it.

2/ Take the original AVIs out of the CLPR folder and re-wrap them and save them as MOVs, realigning the channel settings manually to 'left centre' and 'right centre', and then bring those MOVs into FCP where they behave as I want.

Spent too long staring at screens and menus - is there anything obvious I've missed?

(NB - my preferred method would be to shoot in HD and then crunch down to SD in FCP7 but there are various reasons why I must shoot in SD.)

Many thanks.

Paul R Johnson · May 5th, 2014, 12:22 PM

While it's dual mono, it's just video and two tracks to the editor. Premiere does exactly the same thing. The technique in Premiere is almost the same, and I've just treated it as normal. My cameras are JVC, but they've always done the same thing, model to model. The camera settings are just routing settings - you still end up with two tracks.

Steve Cottrell · May 6th, 2014, 12:07 PM

Many thanks for replying. I understand that I will get 2 audio tracks onto the timeline - no problem there, and indeed I want 2 audio tracks. My issue is that what I would like is a track 1 and a track 2 that are not panned left and right (respectively) but centred. What I get is a pair of tracks, 1 and 2, linked as a stereo pair, with track 1 panned left and track 2 panned right. Settings in the camera are selected to allow this (eg not stereo but mono selected). It just seems to be an issue with the way the camera puts out AVI files.

I suppose I really need to address this issue with Sony!

Cheers

May 3rd, 2014, 09:52 AM	#1
Steve Cottrell Regular Crew Join Date: Apr 2009 Location: Oxford UK Posts: 110	AVI Stereo Pair Issue in SD in FCP7 For the next few months I will be shooting in FAT SD on a PMW-400 producing AVI files. The problem is that although I have all appropriate audio settings on the camera set to give dual mono, when I drag in the AVIs onto an FCP7 timeline, the audio appears as a linked stereo pair. If I shoot FAT HD, then bring in the footage using XDCAM Transfer via the FCP7 Import menu, then all the footage appears as normal on the timeline - dual unlinked mono tracks (just 1 and 2 in this instance). Having done a couple of hours of web research and testing, I can find no way to get the AVIs' audio tracks to be unlinked mono tracks out of the camera. It seems my alternatives are these: 1/ Unlink the stereo pair in the timeline, get rid of (say) track 2 when I'm after the content on track 1, then pan track 1 to centre and apply normalisation gain to get it where I want it. 2/ Take the original AVIs out of the CLPR folder and re-wrap them and save them as MOVs, realigning the channel settings manually to 'left centre' and 'right centre', and then bring those MOVs into FCP where they behave as I want. Spent too long staring at screens and menus - is there anything obvious I've missed? (NB - my preferred method would be to shoot in HD and then crunch down to SD in FCP7 but there are various reasons why I must shoot in SD.) Many thanks.

May 5th, 2014, 12:22 PM	#2
Paul R Johnson Inner Circle Join Date: Nov 2005 Location: Lowestoft - UK Posts: 4,045	Re: AVI Stereo Pair Issue in SD in FCP7 While it's dual mono, it's just video and two tracks to the editor. Premiere does exactly the same thing. The technique in Premiere is almost the same, and I've just treated it as normal. My cameras are JVC, but they've always done the same thing, model to model. The camera settings are just routing settings - you still end up with two tracks.

May 6th, 2014, 12:07 PM	#3
Steve Cottrell Regular Crew Join Date: Apr 2009 Location: Oxford UK Posts: 110	Re: AVI Stereo Pair Issue in SD in FCP7 Many thanks for replying. I understand that I will get 2 audio tracks onto the timeline - no problem there, and indeed I want 2 audio tracks. My issue is that what I would like is a track 1 and a track 2 that are not panned left and right (respectively) but centred. What I get is a pair of tracks, 1 and 2, linked as a stereo pair, with track 1 panned left and track 2 panned right. Settings in the camera are selected to allow this (eg not stereo but mono selected). It just seems to be an issue with the way the camera puts out AVI files. I suppose I really need to address this issue with Sony! Cheers