Summary: Follow this article you will know how to make Sony NEX-VG10/VG20 AVCHD MTS playable and editable in iMovie, so you can have a smooth post-production workflow in iMovie with these AVCHD footage.
Source: Sony NEX-VG10/VG20 .MTS and iMovie 11 Compatibility Solutions
The NEX-VG10, NEX-VG20, NEX-VG30 are the most popular Interchangeable Lens HD Camcorders from Sony. They all can record richly-detailed, film-like AVCHD Progressive footage with breathtaking quality. However, the full HD output uses AVCHD Progressive technology, which may cause some incompatible troubles. Thus, there comes a common confusion: how to import Sony 1080 60p AVCHD to iMovie.
As far as we know AVCHD is not an ideal editable format for iMovie, especially the 1080 60p movies(in a non-standard format). Although it is said that iMovie 8 or later version can support the AVCHD, owing to the computer configuration and operating environment, it is still difficult for iMovie 8 or later to support AVCHD videos, let alone the earlier version. So the best way to directly get Sony NEX-VG10/VG20 footage to iMovie would be to convert AVCHD files to AIC .mov before start the importing.
To get the work done, Brorsoft MTS/M2TS Converter for Mac is highly recommended to transfer the 1080 60p AVCHD recordings for iMovie editing. With it, you can effortlessly transcode AVCHD MTS video to iMovie, FCE, FCP, Avid MC, Premiere Pro, etc compatible formats as well as common video formats (AVI, MPG, MOV, MKV, MP4, etc) on Mac OS X(Lion and Mountain Lion included). Unlike other applications, this Mac AVCHD converter does this without time consuming, quality-sapping transcodes - conversion is quick, lossless, and easy. Below is how to.
Guide: How to convert Sony NEX-VG10/VG20 AVCHD videos to iMovie:
Step 1: Set up the MTS file converter Mac and run it. Click “Add” button on the main interface to load your MTS/M2TS recordings. If necessary, you can click the button "Merge into one" to combine several videos into one file.
Step 2: Click the “Format” to select output format. Choose "iMovie and Final Cut Express--> Apple Intermediate Codec(AIC)(*.mov)" as the output format. It’s also the best format for editing Sony 60p AVCHD in Final Cut Express.
Tip: Before conversion, you can click the “Settings” icon to customize the video/audio settings for iMovie: 1920*1080 vide size; 30fps frame rate(for original 60fps videos) or 25fps frame rate(for original 50fps videos).
Step 3: Click the convert button on the main interface to start Sony NEX-VG10/VG20 to iMovie Conversion.
Once the process is at 100%, you can click “Open” button on the main interface to find the AIC MOV videos. Now you are free to import and edit Sony 1080 60p AVCHD files in iMovie under Mac without problems.