I often use the freeware MPEG streamclip to handle different video formats for loading video to my Adobe Premiere Pro, as MPEG streamclip supports converting various file formats. I got .mts files after shooting videos with Sony HXR-NX5P in 1920 x 1080 images at 24Mbps. The videos could be 50i or 25p. However, my Adobe Premiere Pro does not import the .mts files directly, and MPEG streamclip does not work with AVCHD yet.
After googling a Mac Sony MTS converter, I find Aunsoft MTS/M2TS Converter for Mac the preferred Sony HXR-NX5P to Adobe Premiere Pro converter on Mac OS X like Tiger, Leopard and Snow Leopard. It is a great choice to handle videos in education or training for PPro and then publish on web.
If you have Sony HDR-NX5P or HDR-NX5E for processing in Adobe Premiere Pro (PPro), just follow the steps below to convert 1080/50i or 1080/25p AVCHD videos to WMV for PPro.
Step 1. Add Sony video to Aunsoft MTS/M2TS Converter for Mac.
After transferring .mts files from Sony camcorder to iMac Apple hard drive, run Aunsoft MTS/M2TS Converter for Mac as the best Sony AVCHD to Adobe Premiere Pro converter on Mac, and click the "Add" button to load the .mts videos. You may also drag and drop the .mts files to Aunsoft application UI.
Step 2. Choose HD MOV format.
Click the "Format" option and navigate the mouse cursor to Adobe Premiere/Sony Vegas > MOV (AVC)(*.mov) as output format. Please notice that Adobe Premiere Pro on Mac does not work with .wmv import, but it also works with .mpg import. The Mac Sony HDR-NX5E AVCHD converter will transcode 192-x1080 MTS to MOV in HD for Adobe Premier Pro.
Step 3. Convert Sony MTS to MOV for PPro.
Click the convert button under the preview window, and the conversion from Sony HDR NX5E or NX5P MTS to HD MOV for Adobe Premiere Pro starts immediately on iMac.
Wait for a while, and you will get MOV files with high quality for editing and web publication. If you have other Sony camcorders, you may be interested in the solutions for Sony HDR-CX550, TG3, Cyber-shot TX7, DSC-HX5V at the Sony camcorder column.