4 channel audio in R2CF at DVinfo.net

David H. Wilson · August 21st, 2009, 11:21 AM

If I am beginning with a R3D file that had 4 channel audio imbedded, am I able to convert this file to a CFAVI with the 4 channel audio intact?

Jan Tervo · January 5th, 2010, 05:35 PM

Would like to have this question answered.

Anyone?

David H. Wilson · January 6th, 2010, 12:40 PM

Mmmmm... thank you Jan for bringing this up again. I would still very much like to know if this is possible or if this is a feasible feature request for the future. Actually I'm interested in knowing as well if it is (or will be) possible for CineForm files to be created with multichannel sound (say 6 to 8 channels).

Mike Harrington · January 7th, 2010, 02:15 PM

i've only done 2 channel R2CF....

but i seem to remember CF being only 2 channels of audio.

you could however replace the audio stream with a separate stream in virtualdub...using direct stream copy.....and have no recompression...I know you can embed a six channel ac3 surround track in that way

just a side note...RED audio sucks....I get better out of an HVX...
so for a really important project i would recommend external recording...and just using red audio for sync
the epics and scarletts will be different but RED audio is far from the quality of RED video

David H. Wilson · January 7th, 2010, 07:49 PM

Mike, many thanks for your thoughts and I concur with your idea of a separate audio stream in virtualdub.

I agree as well with your suggestion of external recording, we almost always do dual system sound. We have found, however, that with the new sound card, the audio we achieve with the Red is quite good.

We are using Core Sound's 4 channel ambisonic TetraMic. Core makes connectors for the RED and we are finding that the RED/TetraMic combination works beautifully and produces a quite excellent sound-field recording; we would love to see CineForm support multichannel audio.

David

August 21st, 2009, 11:21 AM	#1
David H. Wilson Regular Crew Join Date: Mar 2008 Location: Culver City, CA Posts: 124	4 channel audio in R2CF If I am beginning with a R3D file that had 4 channel audio imbedded, am I able to convert this file to a CFAVI with the 4 channel audio intact? Last edited by David H. Wilson; August 22nd, 2009 at 11:19 AM.

January 5th, 2010, 05:35 PM	#2
Jan Tervo Regular Crew Join Date: Oct 2009 Location: Turku, Finland Posts: 30	Would like to have this question answered. Anyone? __________________ The Forgiveness A Film About Life

January 6th, 2010, 12:40 PM	#3
David H. Wilson Regular Crew Join Date: Mar 2008 Location: Culver City, CA Posts: 124	Mmmmm... thank you Jan for bringing this up again. I would still very much like to know if this is possible or if this is a feasible feature request for the future. Actually I'm interested in knowing as well if it is (or will be) possible for CineForm files to be created with multichannel sound (say 6 to 8 channels).

January 7th, 2010, 02:15 PM	#4
Mike Harrington Regular Crew Join Date: Jan 2009 Location: Edmonton, Canada Posts: 91	i've only done 2 channel R2CF.... but i seem to remember CF being only 2 channels of audio. you could however replace the audio stream with a separate stream in virtualdub...using direct stream copy.....and have no recompression...I know you can embed a six channel ac3 surround track in that way just a side note...RED audio sucks....I get better out of an HVX... so for a really important project i would recommend external recording...and just using red audio for sync the epics and scarletts will be different but RED audio is far from the quality of RED video

January 7th, 2010, 07:49 PM	#5
David H. Wilson Regular Crew Join Date: Mar 2008 Location: Culver City, CA Posts: 124	Mike, many thanks for your thoughts and I concur with your idea of a separate audio stream in virtualdub. I agree as well with your suggestion of external recording, we almost always do dual system sound. We have found, however, that with the new sound card, the audio we achieve with the Red is quite good. We are using Core Sound's 4 channel ambisonic TetraMic. Core makes connectors for the RED and we are finding that the RED/TetraMic combination works beautifully and produces a quite excellent sound-field recording; we would love to see CineForm support multichannel audio. David