upload file in rootpath using asp.net

// set ffmpeg path, make sure ffmpeg folder exist on root of your web application.
upload1.FFMPEGPath = RootPath + "\\ffmpeg\\ffmpeg.exe";
// set flvtool path for setting meta information for flv videos, make sure flvtool folder available on root of your web application.
upload1.FLVToolPath = RootPath + "\\flvtool\\flvtool2.exe";
// set directory path where original video will store after uploading.
upload1.OriginalPath = RootPath + "\\contents\\original";
// set directory path where flv, mp4, wmv, mp3 files will store after publishing.
upload1.FLVPath = RootPath + "\\contents\\flv";
// set directory path where thumbs file will store after capturing from video.
upload1.ThumbPath = RootPath + "\\contents\\thumbs";
// set watermark directly path where transparent watermark image exist. Note ffmpeg must support and include vhook/watermark.dll to post watermark on video. more detail
upload1.WatermarkPath = RootPath + "\\contents\\watermark";
//set transparent watermark image filename.
upload1.WatermarkImage ="watermark.gif";
// set allowable video, audio file extensions.
upload1.VideoAllowableExtensions = "mp4,avi,wmv,flv,mpg,mpeg,mov";
// set max allowable video uploading size in MB
upload1.MaxVideoSize = 10;
// set whether to generate single image or multiple images to create story board for video. In case of multiple images. Video Uploader will generate 15 images from start to end of video.
upload1.isMultipleThumbs = false;