Welcome to the forum.
I might have my history off by a bit, but think that PrE 7 was the first to fully support AVCHD/MTS natively. Others will have a better memory, than I will.
Hunt is correct in that the video codec AVCHD (MPEG4 AVC/H.264) was not supported by Premiere Elements until version 7. A variety of converters were used in those days before Premiere Elements 7 (because of AVCHD non support) and after versions 7 - 9 because of the resource demands of the AVCHD editing in those programs.
Typically the converters in those days took the AVCHD to a MPEG2 HD.mpg form. The most popular one at the time was the free Koyote Soft HD converter. You may want to check it out and determine if it would work for you.
As I recall there were a lucky few at the time who had Sony Vaio computers which offered an add on for AVCHD support in Premiere Elements 4 running on a particular Sony Vaio computer.
Any questions, please do not hesitate to ask.
I was unfamiliar with the extra feature of some Sony VAIO computers, regarding AVCHD. Thank you.
CineForm also had a popular converter for AVCHD, but I would anticipate that its development has since been discontinued, as most current NLE's handly AVCHD well, and general computer resources have increased greatly.
Thank you very much! I went ahead and ordered the current pe software.
It has been a while since I looked at Sony Vaio and its add on to give AVCHD file compatibility to Premiere Elements 4 in the days before AVCHD was supported by Premiere Elements 7 and later. The following link may help
At this time, I would have to do homework to determine if this Sony Vaio add on is still available.
Just wondering if you tried Video Converter from AppGeeker site?
It is great on convert your AVCHD videos into PE4 friendly format (it has PE preset option available), have never felt need to look for something else. quite simple, and seems quick.
What version of Premiere Elements are you using...Premiere Elements 4 or earlier or Premiere Elements 7, 8, or 9?
And, on what computer operating system is your Premiere Elements running?
You know that when you get to Premiere Elements 10, 11, or 12 specifically on Windows 7, 8, or 8.1 64 bit, you really do not need to convert your AVCHD as in those early days before Premiere Elements 10, 11, or 12 on those specific operating systems. As I recall, the Mac people got their 64 bit Premiere Elements when Premiere Elements 11 or 12 is run on Mac 64 bit.
The days for the AVCHD converters may be out of step today except for those who are still using Premiere Elements 4 or earlier. Please see Hunt's post 4 in this thread.
I encountered the same issue "cannot import AVCHD files (.MTS extension on file name)intoAdobe Premier Elements. A little bit of digging around, I found a full guide which help me solve the issue at: http://www.faasoft.com/articles/avchd-converter-mac-and-windows.html It help me convert AVCHD files to many other popular video and audio formats. Hope it will help you more or less.
What version of Premiere Elements and what computer operating system were involved with
I encountered the same issue "cannot import AVCHD files (.MTS extension on file name)intoAdobe Premier Elements.
What brand/model camera recorded your AVCHD.mts files?
Was the problem strictly related to importing the AVCHD.mts into the Editor? Or, did this all start with trying to get your
AVCHD.mts into the Elements Organizer?
That supplemental information would be good to know especially if you were working with Premiere Elements 7 or later.