If you're using the YouTube Downloader or one of the video ripping sites you can download and convert in one step, but if you downloaded from elsewhere you will probably want to convert them.
We wanted to download the video from YouTube because the YouTube video kept sitting there, with a apinner, rather than playing.
因为youtube播放的时候经常会出现缓冲，所以我们就想将视频下载下来观看。
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Those interested in attending are encouraged to download an application on Facebook so their friends can vote for them, and to submit a video on a YouTube channel about why they want to take part.