One of my friends came to me with problem playing AVCHD on Adobe Premiere Pro CS4. CS4 recognized the Canon HF11 AVCHD videos, but the playback is not smooth on her Macbook Pro. She could edit P2 clips nicely, but not AVCHD clips.
Well, my friend got her computer about 2 years ago, and the configuration does not come with a lot of RAM. AVCHD, as the raw HD video format, is really difficult to process on systems with low RAM. It is recommended to run a Quad core CPU (Core 2 Quad Q550) and more than 4GB RAM to play AVCHD smoothly. However, my friend does not want to change the computer yet.
One of the compromising solutions is to adjust the preview monitor to auto or draft mode. Even though the playback quality is not good, it will come out great in final format. Another solution is to convert AVCHD to other format for editing on Mac Adobe Premiere Pro CS4. Aunsoft MTS/M2TS Converter for Mac will help you import HD videos from Canon HF11 to Adobe Premiere with smooth playback by converting AVCHD MTS to MOV on Mac.
With Aunsoft MTS/M2TS Converter for Mac, you just need to load AVCHD .mts video footage from Canon HF11, and choose .mov output format from the HD Video group or the Adobe Premiere/Sony Vegas group. Since the videos were shot at 1080i, you also need to click the Editor button and go to the Effect tab to tick the checkbox for deinterlacing. When it is done, click the convert button on the bottom-right corner to start conversion.
When the conversion is finished, you can import Canon HF11 HD videos to Adobe Premiere and edit with smooth playback.
If you would like to get more information about Canon camcorders like Vixia HF S21, HF S11, Legria HF200, just have a look at Canon camcorder column.