Often, you may meet the problem that the YouTube videos downloaded can not be played on your portable devices. In fact, the main reason is that iPod, iPod, iPhone, PSP, PS3, Zune, Creative, Zen, etc. can only play some certain format, like MP4, while YouTube videos are usually in the formats of FLV or F4V. Therefore, you need a video converter to convert FLV/F4V to MP4, H.264, etc. workable to these devices.
Now, with Moyea YouTube Converter, you must be greatly excited to download and convert YouTube FLV/F4V simultaneously with high fast conversion speed and excellent output quality.
Notes: Moyea YouTube Converter (Downloader + Player + Converter) is an all-in-one program, which can free download YouTube videos from YouTube and quickly and efficiently convert the video file to MP4, AVI, WMV, MPEG, VOB, MOV, MKA, MPG, MP3, AC3, 3GP, M4A, etc. for playback on iPod, iPhone, PSP, PS3, Zune, Creative, Zen, etc.
Here is the step-by-step guide which you may need.
Step 1. Free download Moyea YouTube Converter and install it. The main interface will pop up as below.
Step 2. Add the YouTube file you need into this program
Click the
icon or the right-click 
icon as well as select New download, and then paste the YouTube URL you copied from video info. section from YouTube to the URL blank. After that, the window will pop up as follows. 
Step 3. Output settings.
After the step 2, tick the checkbox Convert to video, then select the output format you need from the drop-down list Convert to. (In addition, you can choose the appropriate one from the optional formats to iPod according to the aspect of your iPod like 640*480, 768*576, etc.)
Click the Settings button, you can reset the profile such as video codec, size, bitrate, framerate, audio codec, samplerate, bitrate, channels to get the desired quality as you want.
Next, please enter the name of the video file you want to download and convert or just rename it in another one as you wish in the Save as blank, and select the destination folder you want to save it in the blank of Save to.
Step 4. click the OK button in the add URL panel to download and convert the YouTube file. And the main downloading and converting will show as below.
Well done, you can import the downloaded and converted file to iPod, iPhone, PSP, Zune, Creative Zen, etc. for playback.
Optional functions:
1. Audio Capture URL.
The defaulted setting of this function is on, so it can automatically capture the URL of the playing video on YouTube.com and pop up a window to inform you whether to download the video.
If you want to turn off it, just click the Capture tab under the Downloader button , and then click the
icon.
2. Library
The function is the same as iTunes. You can save videos respectively in two tabs, that is Movie and Music. Just click Movie or Music, you can choose to import YouTube files from the PC or open to view the saved YouTube files.
3. as an independent player to play the downloaded and converted videos in full screen.
Just clik the Playlists and double-click the video in the play list, you can enjoy the video in full screen via Moyea YouTube Converter.
Hope it helps!