Both for Windows and Mac OS users:
You may usually download FLV videos from YouTube.com. Then if you want to enjoy the downloaded videos with your iPod, iPhone, Zune or other players, which software is the best choice. Try this FLV Video Converter which can convert YouTube video to almost all popular video and audio formats, also to most digital players.
Part 1. For Windows: FLV Format Converter to convert FLV format videos

1. Load YouTube videos you have downloaded into the converter. All added files will be shown on the interface. You can use the built-in preview screen to watch these videos.
2. Edit videos: adjust video playing effects by clicking Effect button. Trim or crop video files by clicking Trim or Crop buttons.
3. Select Profile and edit the profile by clicking "Settings" button. Click "Browse" button to choose Destination folder where the converted files will be saved.
4. After these preparations, click "Start" button to convert FLV video files. The picture below is a converting window which will tell you the converting progress.

Part 2. For Mac: Convert FLV videos on Mac with FLV Video Converter Mac
The program introduced in first part is designed for Windows users. Now this FLV Video Converter Mac is developed for Mac users, which can perform perfectly on Mac OS X v10.4 - 10.5. Similarly, this Mac FLV Format Converter can convert FLV format to general video/audio formats, HD videos and mobile devices on Mac OS X.

Key Features of M2TS File Converter Mac
1. The FLV Format Converter for Mac is able to convert from FLV file to video formats (MPEG-4, H.264/MPEG-4 AVC, MOV, M4V, AVI/H.264 AVI, DivX, XviD, ASF, WMV, MPEG 1/2, etc.) and audio formats (AAC, AC3, AIFF, AMR, WAV, WMA, MP3, etc.) on Mac OS X.
2. Users can enjoy YouTube video on iPod, iPhone, Apple TV, PSP, PS3, Zune, Xbox, Wii, BlackBerry, PDA and more popular portable players with the FLV Converter Mac.
3. Contrast, brightness, saturation can be adjusted at the effect area as ease so as to get the best output effect.
4. According to your need, you can trim the video into clips with exact time length by trim function.
5. Cut the black area or unwanted area by this crop function to fit for your need.
6. Join the added files into a single one for convenience by the merge function.
7. Capture your favorite pictures by the snapshot button.
This is FLV Video Converter with powerful converting functions and easy-to-use operations, with which, you must successfully convert FLV video files to other formats easily and quickly.