Newbie Question - importing MTS audio

kingsfan wrote on 11/13/2010, 1:16 PM

Hi,
I am new to using MTS files in VP10.

My Audio Device Preference is set to Microsoft Sound Mapper.
A few questions:

1. If I drop an MTS file(recorded with 5.1 audio) from my Sony CX550V on to the timeline,should the Front left and Front right channels each show up on their own tracks.

I see the following. Does like look correct?

Audio Track 1 - Surround Pan icon at Front Center - Stream 2 - Channel 1/2
Audio Track 2 - Surround Pan icon at Front Center - Stream 2 - Channel 3
Audio Track 3 - LFE - Stream 2 -Channel 4
Audio Track 4 - Surrounf Pan icon at Rear Center - Stream 2 - Channel 5/6

2. When I play the MTS file back in Vegas, should the audio playback not follow the source of the sound. For example, a sound from the front left of the camera should play in my computer's front left speaker, and so on. Correct?

3. Am I manually supposed to changes each channle to a different speaker?

Thanks for indulging a newbie.

Comments

pwppch wrote on 11/13/2010, 2:29 PM

Vegas does not down mix a surround routing. In Vegas you set the surround routing to specific hardware ports. Since then mapper has only a left and righ channel, the center and lfe channels will appear on either the left or right speaker.

You should select the Surround Mapper in Vegas's audio device preferences. This permits Wimdows to map and potential mix a surround routing to a stereo pair. You should also set Windows audio speaker settings to indicate the correct speak configuration.

Peter

kingsfan wrote on 11/13/2010, 2:49 PM

Thanks for the quick reply.

A few follow on questions.

1. Is what I am seeing to be expected. I want to make sure my camera to capturing 5.1 audio correctly.

2. My Audio Device settings as as follows:

kingsfan wrote on 11/14/2010, 8:56 AM

Bump!
Any guidance on whether what I am seeing is normal will help immensely. Thanks.

musicvid10 wrote on 11/14/2010, 10:48 AM

Dolby Digital 5.1 is AC-3 audio, which Vegas imports in various file formats.
They are imported as discrete raw Front, Center, Rear, LFE audio tracks as the OP has reported.

It is realtime 5.1 encoding that Vegas does not do, so to play back or preview audio from a surround project, one needs a sound interface with six discrete I/O channels, not a 5.1 sound card.

The channel assignments the OP is seeing should be presumed to be correct, unless listening to each track by soloing indicates otherwise. This is a routing/mapping consideration.

If something different is being heard in the speakers, and they are connected through six discrete PCM channels, the first thing to look at is the speaker connections / channel assignments.