How to convert a web video like Youtube video to GIF?

I want to find some YouTube downloader that can convert video so that I can play them on my iPoad touch. DO you guys have any suggestion?

All the video players on my computer suddenly couldn't open any avi video files. I don't know when does it happens. I've tried Windows Media Player, Quick Time, VLC Media Player and DivX. I installed K-Lite_Codec_Pack_660_Full instead of teh ffdshow. But these didn't change anything. I also tried the Shark007 5.8.6 codec pack but it still didn't work. My computer runs Windows XP Pros 2002 SP3. Please help me, thank you!

Why are video games are more addictive than movies, television, music, ebooks, etc.?

I made few videos on my iPad 2. I want send them to someone but they are too large. I am on vacation so I can't use any computer. A free app to compress video on my iPad 2. Thanks very much!!

I have a MBP and I want to download my DVDs to an external HD but Im not sure exactly what to do. I want to be able to rewatch them either on my computer or TV but Im not sure what the best quality is to rip them? Also, which app should I use to RIP them? Handbrake, etc.... Any additional information or videos would be appreciated!

I want to make a "best albums of 2013 " video with albums covers and my my audio talking about the video for uploading to YouTube. I can handle the subtitles part, but have no idea about how to add the album covers and audio to the video.

I recorded a video on my phone that's turned sideways when played. How do I rotate it to play on my computer?

I have a recorded video that the audio is out of sinc, and I would like to extract the audio then put it back on the video with the correct timing. (I know I'm not using technical terms, I know how to put the audio back on, I just need help extracting it.)