public void ConvertTask(string command)
{
FFMPEG ffmpeg = new FFMPEG();
var result = ffmpeg.RunCommand(command);
Debug.WriteLine(result);
}
public static void ConvertVideo(string mediaName,int mediaId)
{
var db = new ApplicationDbContext();
var dbRecord = db.MediaFiles.Find(mediaId);
var baseDir = HostingEnvironment.MapPath("~/MediaData/Videos/" + mediaId);
var mediaDir = Path.Combine(baseDir, mediaName);
var mediaInfo = GetMediaInfo(mediaDir);
//todo error when mediinfo doesnt have video
if (!mediaInfo.Video.HasVideo)
//todo: implement this in the controller
throw new Exception("Video file is not supported");
VideoQuality videoQuality = ServerTools.VideoParams.ClassifyVideo(mediaInfo);
MediaInfo videoParams = ServerTools.VideoParams.GetVideoParams(videoQuality);
dbRecord.VideoQuality = videoQuality;
var outputVidSd = Path.Combine(baseDir, "sd.mp4");
var outputVidHd = Path.Combine(baseDir, "hd.mp4");
var outputAudio = Path.Combine(baseDir, "audio.mp4");
var outputMobile = Path.Combine(baseDir, "mobile.mp4");
var outputMobileHd = Path.Combine(baseDir, "mobileHd.mp4");
var outputThumbnail = Path.Combine(baseDir, "thumbnail.jpg");
var outputPasslogFile = Path.Combine(baseDir, "passlog");
var segmentsDir = Path.Combine(baseDir, "segments");
if (!Directory.Exists(segmentsDir))
Directory.CreateDirectory(segmentsDir);
var hcontext = HttpContext.Current;
var task = Task.Factory.StartNew(() =>
{
HttpContext.Current = hcontext;
FFMPEG ffmpeg = new FFMPEG();
//What part of total progress is the current conversion
Dictionary<string, double> ConversionPercentages = new Dictionary<string, double>();
if (videoQuality == VideoQuality.p360)
{
ConversionPercentages["sd"] = 0.9;
ConversionPercentages["audio"] = 0.1;
}
else
{
ConversionPercentages["sd"] = 0.2;
ConversionPercentages["hd"] = 0.7;
ConversionPercentages["audio"] = 0.1;
}
// Convert to SD
string command = String.Format("-i \"{0}\" -an -b:v {1}k -s {2} -vcodec libx264 -r 24 -g 48 -keyint_min 48 -sc_threshold 0 -pass 1 -passlogfile \"{3}\" \"{4}\"",
mediaDir, ServerTools.VideoParams.p360.Video.Bitrate, ServerTools.VideoParams.p360.Video.Resolution, outputPasslogFile, outputVidSd);
var result = ffmpeg.RunCommand(command,mediaId,ConversionPercentages,"sd",mediaInfo.Video.Duration);
//Convert to HD
if (videoQuality != VideoQuality.p360)
{
command = String.Format("-i \"{0}\" -an -b:v {1}k -s {2} -vcodec libx264 -r 24 -g 48 -keyint_min 48 -sc_threshold 0 -pass 1 -passlogfile \"{3}\" \"{4}\"",
mediaDir, videoParams.Video.Bitrate, videoParams.Video.Resolution, outputPasslogFile, outputVidHd);
result = ffmpeg.RunCommand(command, mediaId, ConversionPercentages, "hd", mediaInfo.Video.Duration);
}
//Convert Audio
command = String.Format("-i \"{0}\" -vn -strict experimental -c:a aac -b:a 128k \"{1}\"",
mediaDir, outputAudio);
result = ffmpeg.RunCommand(command, mediaId, ConversionPercentages,"audio", mediaInfo.Video.Duration);
//Extract thumbnail from the middle of the video
command = String.Format(" -ss {0} -i \"{1}\" -vframes 1 -an -s 360x240 \"{2}\" ", (mediaInfo.Video.Duration / 2.0).ToString(CultureInfo.InvariantCulture),
mediaDir, outputThumbnail);
result = ffmpeg.RunCommand(command);
if (mediaInfo.Audio.HasAudio)
{
//Convert to mobile (add sound to sd video)
command = String.Format("-i \"{0}\" -i \"{1}\" -c:v copy -c:a copy \"{2}\"",
outputVidSd, outputAudio, outputMobile);
result = ffmpeg.RunCommand(command);
//Convert to mobile Hd
if (videoQuality != VideoQuality.p360)
{
command = String.Format("-i \"{0}\" -i \"{1}\" -c:v copy -c:a copy \"{2}\"",
outputVidHd, outputAudio, outputMobileHd);
result = ffmpeg.RunCommand(command);
}
}
else
{
File.Copy(outputVidSd,outputMobile);
if (videoQuality != VideoQuality.p360)
File.Copy(outputVidHd,outputMobileHd);
}
//Segment videos and audio
Mp4Box mp4Box = new Mp4Box();
if (videoQuality == VideoQuality.p360)
command = String.Format("-dash 2000 -frag 2000 -bs-switching no -segment-name \"%s_\" -url-template -out \"{0}\" \"{1}\" \"{2}\" ", Path.Combine(segmentsDir, "video.mpd"), outputVidSd, outputAudio);
else
command = String.Format("-dash 2000 -frag 2000 -bs-switching no -segment-name \"%s_\" -url-template -out \"{0}\" \"{1}\" \"{2}\" \"{3}\" ", Path.Combine(segmentsDir, "video.mpd"), outputVidSd, outputVidHd, outputAudio);
result = mp4Box.RunCommand(command);
File.Delete(mediaDir);
File.Delete(outputVidSd);
if(File.Exists(outputVidHd)) File.Delete(outputVidHd);
File.Delete(outputAudio);
dbRecord.IsBeingConverted = false;
db.Entry(dbRecord).State = EntityState.Modified;
db.SaveChanges();
HttpContext.Current.Cache[mediaId.ToString()] = 1.0;
}, TaskCreationOptions.LongRunning);
}