public static EDanbiVideoExt getVideoExt(string vidExt)
{
if (vidExt == ".mp4")
{
return(EDanbiVideoExt.mp4);
}
else if (vidExt == ".avi")
{
return(EDanbiVideoExt.avi);
}
else if (vidExt == ".m4v")
{
return(EDanbiVideoExt.m4v);
}
else if (vidExt == ".mov")
{
return(EDanbiVideoExt.mov);
}
else if (vidExt == ".webm")
{
return(EDanbiVideoExt.webm);
}
else
{
DanbiUtils.LogErr("not valid video extension! using default ext -> .mp4");
return(EDanbiVideoExt.mp4);
}
}
// References.
// https://infodbbase.tistory.com/90
// https://trac.ffmpeg.org/wiki/Concatenate#differentcodec <- ffmpeg concat cmd arguments
// http://mwultong.blogspot.com/2006/11/dos-file-copy-command.html <- copy/ move cmd arguments
/// <summary>
///
/// </summary>
/// <param name="targetFileNames"></param>
/// <param name="outputFileName"></param>
/// <param name="ffmpegExecutableLocation"></param>
public static System.Collections.IEnumerator ConcatVideoClips(string ffmpegExecutableLocation,
string outputFileLocation,
string outputFileName,
string[] targetFileNames,
EDanbiVideoExt ext)
{
// cmd argument "merging video with ffmpeg.exe"
// ffmpeg -f concat -safe 0 -i VideoList.txt(target video clips names) -c copy output.mp4(output video file name)
// string arg = $"ffmpeg -f concat -safe 0 -i {targetVideoClipFiles} -c copy {outputFileName}";
string extstr = DanbiFileExtensionHelper.getVideoExtString(ext);
string outputFinal = $"{outputFileName}{extstr}";
DanbiUtils.Log(outputFinal, EDanbiStringColor.teal);
// Write the target video clips.
using (var writer = new System.IO.StreamWriter($"{outputFileLocation}/{outputFileName}.txt", true))
{
for (var i = 0; i < targetFileNames.Length; ++i)
{
if (!string.IsNullOrEmpty(targetFileNames[i]))
{
writer.WriteLine($"file '{targetFileNames[i]}'");
}
}
writer.Close();
}
if (new System.IO.FileInfo($"{outputFileLocation}/{outputFinal}").Exists)
{
System.IO.File.Delete($"{outputFileLocation}/{outputFinal}");
yield return(null);
}
string arg = $"ffmpeg -f concat -safe 0 -i {outputFileName}.txt -c copy {outputFinal}";
// DanbiUtils.Log(arg, EDanbiStringColor.teal);
DanbiFileSys.OpenProcessWithArguments(outputFileLocation, arg);
System.Diagnostics.Process.Start(@"" + outputFileLocation);
}
