Now it is no longer a problem to play downloaded YouTube videos with Quicktime Player on Mac because of the FLV to MOV Converter Mac software. The powerful FLV to MOV Mac Converter can not only convert FLV to MOV, AVI, WMV, 3GP, FLV, MPEG 1/2, MP4, VOB, DivX, XviD, MP3, WMA, WAV, AAC, but also can output video/audio for iPod, iPhone, PSP, PS3, Xbox, BlackBerry, Gphone, etc.
1. Install the FLV to MOV for Mac.
Step 1: Download the program installation file (*.dmg).
Step 2: Double click the downloaded .dmg file.
Step 3: You will see a popped up window with an icon in it.
Step 4: Drag the icon to your desktop.
Step 5: Double click the icon on your desktop and the program will be launched.
You could see its interface:

2. How to use this Mac FLV to MOV OS X Converter.
Step 1. Load FLV videos into the FLV to MOV Converter for Mac by clicking
button. You could add more than one file at a time for batch conversion supported.
On the right pane of the interface, a built-in preview screen is designed for users to watch the added videos. When previewing, you could capture the current picture by pressing Snapshot button and save as GIF, BMP or JPEG.
Step 2. Editing functions can be realized with this step. Users could cut file length (Trim), alter video dimension (Crop) and adjust brightness, contrast and saturation (Effect). With these functions, it is so easy to cutomize ideal video with ideal effect and lenght.

Step 3. All supported formats have been classified. QuickTime Video (*.mov) is placed in General Video. Click "Settings" button to open profile settings window where you could modify the output format according to your need. "Browse" button can be pressed to change the destination folder where the output files will be saved.

Step 4. OK, after these preparations, start to convert FLV to MOV mac by clicking "Start" button. A window will pop up to show you the converting progress information. There are elapsed time and remaining time.

Open the defaulted folder and play converted videos with QuickTime player. Still remain quite good video and audio quality, yeah! Enjoy the FLV to MOV Mac Converter immediately.