public async static Task<List<VideoInfo>> GetVideoInfos(string videoId)
{
const string SHORTURL = "http://www.youtube.com/watch?v=";
var videoInfos = new List<VideoInfo>();
var shortUrl = SHORTURL + videoId;
var html = await GetStringAsync(new Uri(shortUrl));
var title = GetTitle(html);
foreach (var url in ExtractUrls(html))
{
var videoInfo = new VideoInfo();
videoInfo.VideoId = videoId;
videoInfo.Title = title;
videoInfo.VideoUri = new Uri(url + "&title=" + title);
if (!await Task<bool>.Factory.StartNew(() => videoInfo.GetSize()))
continue;
videoInfo.Seconds = long.Parse(
Regex.Match(html, "\"length_seconds\":(.+?),",
RegexOptions.Singleline).Groups[1].ToString());
if (videoInfo.SetExtensionAndSize(html.IsWideScreen()))
{
if (!videoInfo.Extension.StartsWith("itag-"))
videoInfos.Add(videoInfo);
}
}
videoInfos.Sort();
return videoInfos;
}
