Summary: The article shows you an easy workaround to import and edit Panasonic HDC-HS900 recorded 1080 50p/60p MTS files in iMovie 08/09/11 along with some help from the best AIC Converter for iMovie.
Announced at the 2011 Consumer Electronic's Show, the HDC-HS900 High Definition Camcorder is a high-end HD offering from Panasonic. Right off the bat a few of the camera's most desirable features include: 1920 x 1080/60p or 1920 x 1080/50p recording, a 220GB hard disk drive, an SD memory card slot, the option to record in 3D, and a quality image sensor system. Compatible with SDHC, SDXC memory cards. The HD video camera stores videos in .mts format with MPEG-4 AVC/H.264 compression. While enjoying the stunning HD image quality, many folks are having problems (such greyed out) when importing HDC-HS900 1080 50p or 60p footage to iMovie for smoothly editing. If you're in such a situation, you can read on the article to learn more, which mainly shows you how to get Panasonic HDC-HS900 50p/60p MTS files and iMovie 08/09/11 to work beautifully.
The reason that you can't successfully ingest those recorded AVCHD footages on 1080 60p/50p format to iMovie is limited by the iMovie itself. Currently 1080/60p or 1080/50p footage is a very non-standard format and it's unsupported in iMovie even the lastest iMovie 11. In order to import HDC-HS900 50p/60p AVCHD footage into iMovie for smoothly editing, you can use 3rd-party software to re-wrap and convert 60p/50p MTS to Apple Intermediate Codec first, which is a native format for iMovie. It's a great way to achieve your goal smoothly. For this purose, this article will show you how to transcode Panasonic HDC-HS900 MTS to AIC MOV in detail.
Converting Panasonic HDC-HS900 50p/60p MTS to iMovie native AIC MOV
The quick workaround is to use the easy-to-use yet professional app called Brorosft MTS/M2TS Converter for Mac which can be used as a Panasonic AVCHD MTS Converter under Mac OS X 10.9 Mavericks, 10.8 Mountain Lion, 10.7 Lion, Snow Leopard 10.6, Leopard 10.5. It is free, clean and safe to install and use. With it, you can effortlessly transcode MTS to Apple Intermediate Codec, ProRes and DNxHD—ensuring maximum editing quality and efficiency when working with iMovie, Final Cut Pro, Adobe Premiere, Avid Media Composer etc. non-linear editing systems. Below are the steps.
Step 1: Install and launch the excellent Mac Panasonic MTS Converter, and click the "Add" button to load the .MTS videos from Panasonic HDC-HS900. You can also use the drag-and-drop method to load the 1080p .mts files to the application UI.
Step 2: Click the format bar, and there will bemany output formats on the format list. You are recommended to choose iMovie and Final Cut Express > Apple Intermediate Codec (AIC) (*.mov).
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 Arrow button on the main interface to start Panasonic HDC-HS900 MTS to iMovie AIC MOV conversion.
When the conversion finished, you can directly import the output AIC MOV files to iMovie or Final Cut Express for editing andmake your movies. The importing needn't any rendering because the AIC MOV isone of the compatible video formats in iMovie/FCE on Mac OS X Lion.
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Source:How to import videos from Panasonic HDC-HS900 to iMovie