Premiere Pro CS6 No audio from Sony AVCHD

I too have had the same problem. It seems to be linked to a lack of available space for me. By deleting old cached filed, and creating disk space, the problem disappeared for me.

Thanks a lot, so far this solution works really well for me.

I had the same problem and a google search shows many other have too for the last couple of years. I tried all the tips everyone has given and none worked for me. When I would import an .mts file only the video was there, no audio. As a work around I recoded the files with ffmpeg from .mts 60 fps to mp4 30 fps. The sound was fine on the imported mp4 files.

Today the problem was solved and I think I know what the problem was. I upgraded cs6 to version 6.03. When I did, and opened up a new project, I had five times as many presets to choose from. One of them was AVCHD and had choices for 1280x720 with frame rates of 24, 25, 30, 50 and 60. I picked 60 and the .mts file worked great with no recoding needed.

I think what the problem may be is that unless you pick the correct preset, .mts files have no audio, and I didn't get all the presets when I first installed version 6.0. With the upgrade to version 6.03 all the presets were there and the problem seemed to be solved.

Another strange thing I just now noticed is that the above preset does not pick up audio on an mp4 file with a 48,000 sample rate but a Mpeg Audio Layer codec. The mp4 files with the 48,000 Mpeg AAC audio codec work fine, as now do the .mts files with an A52Audio aka AC3 codec. Using the cs6 File tab/Get Properties/file choice, the files that don't get audio don't  show any audio properties. So if using the cs6 properties choice doesn't show any audio information you don't get audio on that clip in cs6. Naturally all these codecs work fine in Windows media player, VLC player, etc. but CS6 reads some but not others. I don't know if there is a preset that will read the Mpeg Audio layer codec, but since it was just a test clip I don't want to go through a bunch of presets to find out. Incidentally, the VLC media player is what I used to show all the audio and video codec information, bitrate, etc. for all the different clips. I also noticed that if cs6 doesn't recognize the audio portion of a video clip, then the Adobe media encoder won't see it either.

You might want to also try: Help > Deactivate. Quit Premiere Pro. Then Help > Activate.

did you guys try adding an audio track of 5.1 to the timeline and then importing the video to the timeline? i dont have any of the sony HD cams, but that seems like a posible solution.