Recently I was trying to write a little C# function for cropping images. I expected it to be a quick 5 minute task but I ended up spending a huge amount of time getting it to work correctly. I kept getting a very stubborn and mysterious error - “Invalid Parameter Used” - whenever I tried […]
SharpZipLib is a great open source library for handeling all kinds of gzip/zip compression/decompression. More Info - http://www.icsharpcode.net/OpenSource/SharpZipLib/
In the following example I’m passing the HtmlInputFile object directly into the ZipInputStream to decompress the PostedFile and save its contents on the server.
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using System.IO;
using ICSharpCode.SharpZipLib.Zip
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private void UnzipAndSave(HtmlInputFile objFileUpload)
{
ZipInputStream s = new ZipInputStream(objFileUpload.PostedFile.InputStream);
ZipEntry theEntry;
[…]
In this case I’m resizing the video and converting it to FLV format. For more ffmpeg commandline options - http://ffmpeg.mplayerhq.hu/ffmpeg-doc.html
private void ConvertVideo(string srcURL, string destURL)
{
string ffmpegURL = “~/project/tools/ffmpeg.exe”;
DirectoryInfo directoryInfo = new DirectoryInfo(Path.GetDirectoryName(Server.MapPath(ffmpegURL)));
ProcessStartInfo startInfo = new ProcessStartInfo();
startInfo.FileName = Server.MapPath(ffmpegURL);
[…]
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