Was this solved? I'm having the same experience with my first import of AVCHD into CS6. The same files include audio in CS5, but not in CS6. Not that audio simply doesn't play -- it doesn't show up at all. Other AVCHD previously imported into CS5 does run audio and video in CS6 normally.

Yes, and yes.  In fact, the same files opened in CS5 function normally.  But when opened into CS6, no audio comes across.

A spanking new CS6 Project with new assets, not common to both versions.  I tried the new assets in a new CS5 Project when CS6 didn't import the audio. That's how I discovered the new assets function normally in CS5. And the trouble in CS6 is only with these particular assets, which is why it's maddening. Other video assets in the same CS6 Project -- GoPro files and video from a Nikon DSLR -- function normally!

I am also concerned by this issue as I have a Sony A77 camera (among others that create .mts files) and am considering an upgrade from Premier 5.5 to CS6(.1) but in my testing I have not been able to get the audio for file imports working either.

I have tried;

- various project setups, defaults and with Audio 5.1 selected etc

- Drag videos to the project window, open through the browser both from a copied file and from the source (camera) and from a copied from camera to temp dir in it's entirety (ie with additional meta data files).

- Adobe Media Encoder wont open and convert the vids with audio either, nor will bridge

- Changing the device (camera) to record (lower quality) mp4 files import to Premier in any manner I wish to try, all with no audio problems

- The video files play fine (with audio) in Windows Media Player, VLC and Even Lightroom 4.1

- These same video files import with audio fine into CS5.5, but not in 6.

So my questions are...

- Does Adobe recognise that there is a problem here? That some, many, most .mts AVCHD video files are not loading into CS6 Premier Pro properly?

- Is there a workaround/solution? (that is established and please nobody please suggest a re-install of the app again)

- Is there a simple converter or way of modifying the mts file that works and is free? (anything from a rename to a re-encode that is tested)

There is way too many people talking about this problem for it not to be ignored and in cases where people are finding that it worked fine in 5.5 and now doesnt in 6, this is not a user problem, it is a technical problem specific to the CS6 app range, either with a codec support (ac3) not properly functioning or a related glitch and it needs to be fixed or resolved soon please.

Just to add:

VLC reports the video file properties as;

Video: h264 - mpeg-4 avc (part 10) (h264)

Audio: A52 Audio (aka AC3) (a52)

  Chanels Stereo

  Sample Rate 48000 Hz

  Bitrate 256 kb/s

Here are screen shots of the info panel for the same short clip opened in CS6 (darker) and CS5 (lighter).  Note that the clip has no audio info at all in PrPro CS6, and does have audio in PrPro CS5, where it functions normally.  I hate mysteries.  Is this helpful at all?  And Mr. Hunt, I'm deeply grateful for your guidance and assistance, by the way.

Great info, thanks for adding that.

It seems that this is working for some people, although nobody has confirmed the reason for this - another third party app, driver or codec that exists may fix the problem. But in my tests I am using a clean Win7 (64 bit) with office, cs6 suite and Sony PMB. I have tried adding Sony's image/data converted plugins (which are mostly raw related) and a few extras such as Lightroom, VLC...

The suspicious thing is that 5.5 reads it on the same systems that cs6 does not.

A discussion at http://forums.dpreview.com/forums/readflat.asp?forum=1045&message=4159 7098&changemode=1 indicates the issue with Photoshop (although why this person is doing video in photoshop I am not sure) and that getting Premier Pro /Master collection will include the codecs and enable the AC-3 decoding (which is otherwise blocked) required for this video format -  referring back to comments here http://forums.adobe.com/message/4284091#4284091 - maybe the ac-3 codec is still just block/disabled for some reason?

I cant find the other thread/conversation i also saw that mentioned about Pro including the full dolby codec that would help make it work...?

Is there a (simple) way to test perhaps if the codecs that are used/employed to do it are in fact installed and working? - I have played with codecs/muxers etc in the past, even when doing it though I was confused by what was happening...

Just to add as a note,

Sont Vegas (understandably) works fine in the same enviroment and loads (the audio of) mts files (that dont work in CS6) quite ok. Adding extra software like this doesn't appear to fix or even help with CS6, so i am expecting their codec paths and logic work independantly of windows in general, do their own thing and thus the problem is within the app and configuration itself and less a related codec/app/patch/windows concern.

Audition CS6 can not open the audio from .MTS file (AC3) too. I thought, transferred the audio to another format and then insert into the Premiere CS6, but unfortunately it also does not. It is a very desperate situation.

I installed a recent PP6 update and my audio probllem seems to have been cured!  Thanx Adobe!