private Guid HandleNewAudioJob(AudioJobRequestModel request)
{
if (request == null)
{
throw new ArgumentNullException(nameof(request));
}
AudioJobRequest jobRequest = new AudioJobRequest
{
Needed = request.Needed.LocalDateTime,
Inpoint = request.Inpoint,
Targets = request.Targets,
SourceFilenames = request.SourceFilenames,
OutputFolder = request.OutputFolder,
DestinationFilename = request.DestinationFilenamePrefix
};
Guid jobCorrelationId = Guid.NewGuid();
string sourceFilename = request.SourceFilenames.First();
string uniqueNamePart = Guid.NewGuid().ToString();//Used to avoid file collisions when transcoding the same file multiple times to the same location
var frameCount = _helper.GetDuration(sourceFilename);
var jobs = new List <AudioTranscodingJob>();
foreach (var target in request.Targets)
{
string extension = ContainerHelper.GetExtension(target.Format);
string destinationFilename = $@"{request.DestinationFilenamePrefix}_{uniqueNamePart}_{target.Bitrate}.{extension}";
string destinationFullPath = $@"{request.OutputFolder}{Path.DirectorySeparatorChar}{destinationFilename}";
string arguments = string.Empty;
string outputFullPath = Convert.ToBoolean(ConfigurationManager.AppSettings["TranscodeToLocalDisk"])
? @"|TEMP|"
: destinationFullPath;
if (jobRequest.SourceFilenames.Count == 1)
{
if (target.Format == ContainerFormat.MP4)
{
arguments = $@"-y -xerror -i ""{sourceFilename}"" -c:a {target.AudioCodec.ToString().ToLowerInvariant()} -b:a {target
.Bitrate}k -vn -movflags +faststart -map_metadata -1 -f {target.Format} ""{outputFullPath}""";
}
else
{
arguments = $@"-y -xerror -i ""{sourceFilename}"" -c:a {target.AudioCodec.ToString().ToLowerInvariant()} -b:a {target
.Bitrate}k -vn -map_metadata -1 -f {target.Format} ""{outputFullPath}""";
}
}
else
{
/*RESULT:
* -y -xerror
* -i "\\ondnas01\MediaCache\Test\test.mp3" -i "\\ondnas01\MediaCache\Test\radioavis.mp3" -i "\\ondnas01\MediaCache\Test\temp.mp3"
* -filter_complex
* [0:0][1:0][2:0]concat=n=3:a=1:v=0
* -c:a mp3 -b:a 64k -vn -map_metadata -1 -f MP3 \\ondnas01\MediaCache\Test\marvin\ffmpeg\test2.mp3
*/
string filenameArguments = String.Empty, streams = String.Empty;
int streamCount = 0;
foreach (var filename in jobRequest.SourceFilenames)
{
filenameArguments += $@" -i ""{filename}"" ";
streams = $"{streams}[{streamCount++}:0]";
}
streams = $"{streams}concat=n={streamCount}:a=1:v=0";
if (target.Format == ContainerFormat.MP4)
{
arguments =
$@"-y -xerror{filenameArguments}-filter_complex {streams} -c:a {target.AudioCodec.ToString().ToLowerInvariant()} -b:a {target
.Bitrate}k -vn -movflags +faststart -map_metadata -1 -f {target.Format} ""{outputFullPath}""";
}
else
{
arguments =
$@"-y -xerror{filenameArguments}-filter_complex {streams} -c:a {target.AudioCodec.ToString().ToLowerInvariant()} -b:a {target
.Bitrate}k -vn -map_metadata -1 -f {target.Format} ""{outputFullPath}""";
}
}
var transcodingJob = new AudioTranscodingJob
{
JobCorrelationId = jobCorrelationId,
SourceFilename = sourceFilename,
Needed = request.Needed.DateTime,
State = TranscodingJobState.Queued,
DestinationFilename = destinationFullPath,
Bitrate = target.Bitrate,
Arguments = arguments,
DestinationDurationSeconds = frameCount
};
jobs.Add(transcodingJob);
}
Directory.CreateDirectory(request.OutputFolder);
if (!Directory.Exists(request.OutputFolder))
{
throw new ArgumentException($@"Destination folder {request.OutputFolder} does not exist.");
}
return(_repository.Add(jobRequest, jobs));
}