I had rendered 4 AVCHD re-writable discs using Videostudio X2, it was painful but in the end, it came out pretty good.
I have tried to make more copies for some friends, but all came out not playable in Cyberlink Power DVD. The original re-writable disks are playing good in PowerDVD and Blue-Ray players.
To multiply the discs, I was using NERO, and some help from this totorial:
"Open Nero Burning ROM (not Nero Express, fine Nero Burning ROM in the Nero folder of your Start Menu. Look inside the Data subfolder and open Nero Burning ROM) and you will immediately see the New Compilation window.
If you do not see this window, then click File --> New or hit CTRL + N. You will now see your burning options (make sure DVD is selected, not CD). Scroll down the list on the left until you find the option for "DVD-ROM (UDF)". Select it as shown in the picture (click to enlarge).
You must now set the file system to UDF 2.50 or else the AVCHD disc won't be standard and probably won't work. Click the UDF tab as shown in the picture (click to enlarge). Under options, change to "Manual Settings (advanced users only)". Change UDF partition type to Physical Partition and change the File-system version setting to UDF 2.50. Once you have done that, click the big New button at the end of the program.
You now must add your AVCHD folders to your compilation once the program has loaded correctly (sometimes can take up to a minute). On the left is the compilation (what you want on the disc) and on the right is a file browser. Use the file browser on the right to locate the BDMV and CERTIFICATE folders.
When you find them, you can either add them to the compilation list on the left by right-clicking and selecting that option, or you can simple click the folders and drag them across the program, then release them into the AVCHD compilation. Make sure the BDMV and CERTIFICATE folders are at the root of the disc (they aren't inside any other folder on the disc). Once you have them added, you are ready to burn.
Click the Recorder menu and click Burn Compilation, or hit CTRL + B.
A new window will now pop-up that will give you a last chance to change any compilation settings you want, including the write speed. Whenever you are ready now, click the large Burn button to begin the process... and you will immediately get a warning (in Nero 7).
You will now get a warning informing you that the UDF 2.50 file system may in fact cause you some compatibility problems. This may be true of a regular DVD-ROM compilation, but what we are creating here is AVCHD and it must be UDF 2.50. Click the OK button to begin the burning process (for real this time).
The amount of time the burning process will take depends entirely on the amount of data being burned and the speed of the burning process.
If the burning process was a success (which is should have been) you will now be prompted with a message telling you so. Now run along and try it out. "
The only issue I remember is the controversy about the CERTIFICATE folder that some people say it should be there, some others say it shouldn't. The thing is that I don't have it (I guess Videostudio doesn't create it)
Any help from anyone who has more experience in copying AVCHD disks?
Forgot to mention the idea of copying disk-to-disk that should have copied over whatever was there didn't work.