using?System;
using?System.Collections.Generic;
using?System.Linq;
using?System.Text;
using?System.Text.Regularexpressions;
using?System.IO;
using?System.Reflection;
using?System.Diagnostics;
using?System.Drawing;

namespace?BjSTools.MultiMedia
{
????public?class?FFmpegMediaInfo
????{
????????private?static?string?FFMPEG_EXE_PATH?=?CheckRelativePath（@“ffmpeg\ffmpeg.exe“）;
????????private?static?string?FFPROBE_EXE_PATH?=?CheckRelativePath（@“ffmpeg\ffprobe.exe“）;

????????#region?static?helpers

????????///?

????????///?Safely?converts?a?string?in?format?h:m:s.f?to?a?TimeSpan?using?Regex?allowing?every?part?being?as?long?as?is
????????///?

????????private?static?TimeSpan?ConvertFFmpegTimeSpan（string?value）
????????{
????????????Match?m?=?_rexTimeSpan.Match（value）;
????????????double?v?=?0.0;
????????????if?（m?==?null?||?!m.Success）?return?new?TimeSpan（）;

????????????if?（!String.IsNullOrEmpty（m.Groups[“h“].Value））
????????????????v?+=?Convert.ToInt32（m.Groups[“h“].Value）;
????????????v?*=?60.0;

????????????if?（!String.IsNullOrEmpty（m.Groups[“m“].Value））
????????????????v?+=?Convert.ToInt32（m.Groups[“m“].Value）;
????????????v?*=?60.0;

????????????if?（!String.IsNullOrEmpty（m.Groups[“s“].Value））
????????????????v?+=?Convert.ToInt32（m.Groups[“s“].Value）;

????????????if?（!String.IsNullOrEmpty（m.Groups[“f“].Value））
????????????????v?+=?Convert.ToDouble（String.Format（“0{1}{0}“?m.Groups[“f“].Value?CultureInfo.CurrentCulture.NumberFormat.CurrencyDecimalSeparator））;

????????????return?TimeSpan.FromSeconds（v）;
????????}
????????private?static?readonly?Regex?_rexTimeSpan?=?new?Regex（@“^（（（?\d+）:）?（?\d+）:）?（?\d+）（[\.]（?\d+））?$“?RegexOptions.Compiled）;

????????///?

????????///?Checks?if?the?passed?path?is?rooted?and?if?not?resolves?it?relative?to?the?calling?assembly
????????///?

????????private?static?string?CheckRelativePath（string?path）
????????{
????????????if?（!Path.IsPathRooted（path））
????????????{
????????????????string?appDir?=?Path.GetDirectoryName（Assembly.GetCallingAssembly（）.GetName（）.Codebase）;
????????????????path?=?Path.Combine（appDir?path）;
????????????}

????????????if?（path.StartsWith（“file:“?StringComparison.OrdinalIgnoreCase））
????????????????path?=?path.Substring（6）;

????????????return?path;
????????}

????????///?

????????///?Executes?a?process?and?passes?its?command-line?output?back?after?the?process?has?exitted
????????///?

????????private?static?string?Execute（string?exePath?string?parameters）
????????{
????????????string?result?=?String.Empty;

????????????using?（Process?p?=?new?Process（））
????????????{
????????????????p.StartInfo.UseShellExecute?=?false;
????????????????p.StartInfo.CreateNoWindow?=?true;
????????????????p.StartInfo.RedirectStandardOutput?=?true;
????????????????p.StartInfo.FileName?=?exePath;
????????????????p.StartInfo.Arguments?=?parameters;
????????????????p.S