public static VideoInfo TryReadVideoInfoViaAviHeader(string fileName)
{
var info = new VideoInfo { Success = false };
try
{
using (var rp = new RiffParser())
{
if (rp.TryOpenFile(fileName) && rp.FileType == RiffParser.ckidAVI)
{
var dh = new RiffDecodeHeader(rp);
dh.ProcessMainAVI();
info.FileType = RiffParser.FromFourCC(rp.FileType);
info.Width = dh.Width;
info.Height = dh.Height;
info.FramesPerSecond = dh.FrameRate;
info.TotalFrames = dh.TotalFrames;
info.TotalMilliseconds = dh.TotalMilliseconds;
info.TotalSeconds = info.TotalMilliseconds / TimeCode.BaseUnit;
info.VideoCodec = dh.VideoHandler;
info.Success = true;
}
}
}
catch
{
}
return info;
}
/// <summary>
/// Non-thread-safe read a single int from the stream
/// </summary>
/// <param name="fourCc">Output int</param>
public void ReadOneInt(out int fourCc)
{
try
{
var buffer = new byte[DWordSize];
int readsize = _stream.Read(buffer, 0, DWordSize);
if (DWordSize != readsize)
{
throw new RiffParserException("Unable to read. Corrupt RIFF file " + FileName);
}
fourCc = RiffDecodeHeader.GetInt(buffer, 0);
}
catch (Exception ex)
{
throw new RiffParserException("Problem accessing RIFF file " + FileName, ex);
}
}