How to convert FLV to iPod, iPhone, PSP, etc. on Mac OS X

What is FLV?
Flash Video (FLV) is the name of a file format used to deliver video over the Internet using Adobe Flash Player and has extension FLV. The most recent public release of Flash Player supports H.264 video and HE-AAC audio. Flash Video content may also be embedded within SWF files. Notable users of the Flash Video format include YouTube, Google Video, Yahoo! Video, Reuters.com and many other news providers.
How to play .FLV files on Mac?
If you want to play FLV (Flash Video) files on your Mac, you'll need to use a player that can handle FLV files. Here are two recommendations (both of them are FREE):
VLC Media Player
The VLC Media Player is a free, cross-platform media player that supports a large number of multimedia formats, without the need for additional codecs. It can handle FLV, WMV and VOB files to name a few.
Perian
Perian is a free, open source QuickTime component that adds native support for many popular media formats including FLV, MKV, AVI, DivX, 3ivX, FLV1, FSV1, Flash ADPCM and many more.
How to Convert Youtube FLV Videos to iPod, iPod touch, iPhone on Mac OS X?
As we know, most of the video files downloaded from these online video hosting sites are in the format of Flash Video (.flv). For whatever reasons, such as prefer to view and store the videos in mpeg format, or want to play the offline video clips in portable player such as PSP, iPod, and iPhone, or simply don’t like to view it with FLV Player, then there is a need to convert the .flv video format to another format such as .avi, .mov, .wmv and .mpg. So, how can you convert your flv video to all popular video formats easily and quickly? Please follow this step-by-step guide:
Step 1: Download FLV Video Converter for Mac, then run this program.
We recommend you Aiseesoft FLV Converter for Mac, which can convert all video files (including .flv format) from one format to another perfectly. Compared with other FLV converters, this Mac FLV video converter provides you with better output quality, more advanced functions and higher conversion speed(>300%), it also has more friendly and easy-to-use interface.
You can download free trial Version here: for Mac intel users, for Mac PowerPC users.
Then install and run this program.
Step 2: Load the FLV files you want to convert.
Click the "Add File" button to browse your computer hard disc and add the .flv video files you want to convert to the program.
Step 3: Choose the output format
After you added FLV files, you can select an output format for each video file and specify a directory on your computer to save the output files. This Mac FLV Converter supports comprehensive output video formats including AVI, MPEG, WMV, MP4, XviD, 3GP, etc. You can choose "*avi", "*mpg", etc. as the output format as you want. Apart form this, You can just select the format according to the device name.
for exapmle, you can select 'iPod Touch MPEG-4(*.mp4)' when you want to convert FLV to iPod touch on Mac.
Or you can select 'iPhone 3G Video MPEG-4(*.mp4)' when you want to convert FLV files to iPhone 3G on Mac. The default setting works well.
Step 4: Advanced settings(optional)
Of course, if you don't want to use the default video and audio encoding settings, just click the "Settings" button to customize these settings.



Step 5: Edit your flv files(optional)
Aiseesoft FLV Converter for Mac can help you set video brightness, contrast, saturation, Hue, volume, crop video, trim video and even merge multiple files into one single file before the conversion.
you can know more here: How to crop, trim video files on Mac OS X ?

Click the “Start”button to start conversion.

How to download flash videos from video sites for free?
You can download the flash video (.FLV files, the default video format that most video social sites are using) from online video host into your local hard disk. With some tricks, it’s now very easy to download the videos hosted and shared on online video sites such as YouTube and Google Video.
You can follow the 2 guides:
Guide : How to get videos from video sites for free?
For windows users, use Free YouTube Downloader