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SONY VEGAS AUDIO DOUBTS

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Hello¡
Not much time ago i asked here because i had problems when importing dts or ac3 extracted from blu ray movies to Vegas. Someone recommend me to covert the audio tracks to suitable formats for Vegas like Wav and import audi and video separately. I had tried and it works but i have some important questions:
1 - The Wav track is loseless? I mean the channel distribution and levels are the same as in the DTS/Ac3 track? Is there any quality loss?
2 - Before i began with converting to wav sometimes i managed to import the original Ac3 track (always had to downconvert when we talk about DTS-HD-MA or Dolby True HD tracks), but it showed in Vegas as 5.1 Surround (stereo downmix). What is that? Does it means Vegas is changing levels and everything to stereo while appearing as 6 tracks in timeline?

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Ac3 tracks aren’t compatible with Vegas. You’d need to convert it to an aac, mp3, pcm, or wav file. The PCM option is probably what you’re looking for if you want lossless. I believe the stereo downmix refers to what you are hearing while editing if you edit your 5.1 mix in stereo. Your render will output a 5.1 surround track if you select that in the settings.

digmodification.wordpress.com

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 (Edited)

DigMod said:

Ac3 tracks aren’t compatible with Vegas. You’d need to convert it to an aac, mp3, pcm, or wav file. The PCM option is probably what you’re looking for if you want lossless. I believe the stereo downmix refers to what you are hearing while editing if you edit your 5.1 mix in stereo. Your render will output a 5.1 surround track if you select that in the settings.

Hello.
I have not been able to do that. Star Wars I Blu Ray uses a DTS-ES 6.1 English audio track that can be converted to WAV but as i had already done changes in the project timeline, cutting parts and altering audio, i can´t replace just the audio. In adition i was using an AC3 5.1 downmix of the 6.1 DTS-ES that was importing good to Vegas with apparently correct channel distribution but suddenly it is importing only Channels 1/2 in the 6 previous audio tracks in the timeline.

In addition, i don´t see how you can export loseless 6.1 in Vegas. When starting a Project it doesn´t allow yo to choose anything besides Stereo and 5.1. And when rendering, i couldn´t find it as well. I went to customize render options, 7 channels but it says it doesn´t fit with the project properties.

So… Is there any way to import a loseless 6.1 track to Vegas that can also be rendered after editing?
Is there a way to replace the audio only from the videofile? I tried to mux mp4 with the loseless WAV and it said mp4 doesn´t support it. Then tried changing mp4 to m2ts and it worked but the file can´t be imported to Vegas. So i can´t do nothing…