Summary: If you want to add and import FLV to iMovie or FCE without troubles, you need to convert FLV to iMovie acceptable format like AIC MOV first. Here is a simple how-to.
Flash Video is a container file format used to deliver video over the Internet using Adobe Flash Player versions 6–11. There are two different video file formats known as Flash Video: FLV and F4V. Both formats are supported in Adobe Flash Player and currently developed by Adobe Systems. FLV was originally developed by Macromedia. It is a format designed for web video playback that offers high rates of compression and produces high quality videos.
FLV, as the common video format, is widely used by some famous websites, such as YouTube, Google Video, Myspace, Reuters.com, etc. However, the most interested thing to users is to import Youtube FLV videos to iMovie/FCE for editing so that they can get their own masterpiece.
"I got some FLV videos from Youtube. But now I want to import and edit these FLV videos in my iMovie editing system. Is there any way that can meet my demands? Thank you!"
As far as we know, iMovie only supports MPEG-2, AVCHD, DV-Standard, HDV (High Definition Video), QuickTime Movie and MEPG-4 formats now. So if you want to edit FLV files in iMovie smoothly, you need to get a FLV to iMovie converter to transcode FLV/F4V videos to iMovie friendly AIC MOV format.
Here Brorsoft FLV to iMovie Converter for Mac should be your best assistant which is a professional yet easy-to-use video converter to transfer FLV Video to iMovie, Final Cut Express, Final Cut Pro (X), Avid Media Composer, etc with fast speed and best quality.
Free Download FLV to iMovie/FCE Converter on Mac:
(Note: Click here for OS X 10.5)
How to Convert FLV for Editing in iMovie/FCE
Step 1. Drag FLV/F4V files to the program directly. Or go to the "File" menu, choose "Add Video" to locate the FLV/F4V files you want to add. You can add several files to do batch conversion.
Step 2. Choose output profile via clicking the Format bar. “iMovie and Final Cut Express > Apple Intermediate Codec(AIC) (*.mov)” is the best compatible video format you need for editing FLV video in iMovie/FCE.
Step 3. Click the "Convert" button to start the FLV to AIC conversion for iMovie/FCE.
After the conversion, click "Open" to locate the result videos and then launch iMovie,choose File > Import > Movies… to import the converted FLV videos into iMovie.
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Source:Easily Add FLV files into iMovie without troubles