public void getStreams(out YoutubeVideoStreamedItem video, out YoutubeVideoStreamedItem audio, int maxHeight = 4096, int maxSamplesPerSecond = 48000)
{
video = null;
audio = null;
int bestHeight = 0;
int bestSamplesPerSecond = 0;
// get best video stream
foreach (YoutubeVideoStreamedItem item in StreamedItem)
{
if (item.StreamType == StreamType.UNKNOWN) continue;
VideoMetadata metaData = item.Metadata as VideoMetadata;
if (metaData.Height >= bestHeight && metaData.Height <= maxHeight)
{
if (metaData.Height == bestHeight)
{
// prefer mp4 over webm
if (item.Metadata.MimeType.Equals("video/webm")) continue;
// prefer adaptive over normal streams
if (item.StreamType == StreamType.VIDEO_AUDIO) continue;
}
video = item;
bestHeight = metaData.Height;
}
}
if (video != null && video.StreamType == StreamType.VIDEO_AUDIO) return;
// get best matching audio stream
foreach (YoutubeVideoStreamedItem item in StreamedItem)
{
if (item.StreamType == StreamType.UNKNOWN) continue;
VideoMetadata metaData = item.Metadata as VideoMetadata;
if (metaData.SamplesPerSecond >= bestSamplesPerSecond && metaData.SamplesPerSecond <= maxSamplesPerSecond)
{
int idx = video.Metadata.MimeType.IndexOf('/');
if (!metaData.MimeType.EndsWith(video.Metadata.MimeType.Substring(idx)))
{
// only use audio stream that matches with the video stream
continue;
}
if (metaData.SamplesPerSecond == bestSamplesPerSecond)
{
// prefer aac over ogg
if (item.Metadata.MimeType.Equals("audio/webm")) continue;
}
audio = item;
bestSamplesPerSecond = metaData.SamplesPerSecond.Value;
}
}
}
private void downloadAndMuxStreams(string fullpath, YoutubeVideoStreamedItem videoStream,
YoutubeVideoStreamedItem audioStream)
{
TotalProgress = 0;
ItemProgressMax = 100;
Dictionary<String, Object> options = new Dictionary<string, object>();
options.Add("videoStreamMode", StreamOptions.Copy);
options.Add("audioStreamMode", StreamOptions.Copy);
ItemProgress = 0;
ItemInfo = "Downloading and muxing: " + videoStream.Name;
try
{
OpenVideoArgs openArgs = new OpenVideoArgs(videoStream.Location, null, audioStream.Location, null);
videoTranscoder.transcode(openArgs, fullpath, CancellationToken, options,muxingProgressCallback);
}
catch (Exception e)
{
InfoMessages.Add("Error muxing: " + e.Message);
try
{
File.Delete(fullpath);
}
catch (Exception ex)
{
InfoMessages.Add("Error deleting: " + fullpath + " " + ex.Message);
}
return;
}
ItemProgress = 100;
}
void singleStreamDownload(String fullpath, YoutubeVideoStreamedItem item)
{
FileStream outFile = null;
try
{
outFile = new FileStream(fullpath, FileMode.Create);
string mimeType;
ItemProgressMax = 1;
ItemProgress = 0;
ItemInfo = "Downloading: " + fullpath;
StreamUtils.readHttpRequest(new Uri(item.Location), outFile, out mimeType, CancellationToken, downloadProgressCallback);
ItemProgressMax = 1;
ItemProgress = 1;
outFile.Close();
}
catch (Exception e)
{
InfoMessages.Add("Error downloading: " + fullpath + " " + e.Message);
if (outFile != null)
{
outFile.Close();
File.Delete(fullpath);
}
return;
}
}
public void getStreams(out YoutubeVideoStreamedItem video, out YoutubeVideoStreamedItem audio, int maxHeight = 4096, int maxSamplesPerSecond = 48000)
{
video = null;
audio = null;
int bestHeight = 0;
int bestSamplesPerSecond = 0;
// get best video stream
foreach (YoutubeVideoStreamedItem item in StreamedItem)
{
if (item.StreamType == StreamType.UNKNOWN)
{
continue;
}
VideoMetadata metaData = item.Metadata as VideoMetadata;
if (metaData.Height >= bestHeight && metaData.Height <= maxHeight)
{
if (metaData.Height == bestHeight)
{
// prefer mp4 over webm
if (item.Metadata.MimeType.Equals("video/webm"))
{
continue;
}
// prefer adaptive over normal streams
if (item.StreamType == StreamType.VIDEO_AUDIO)
{
continue;
}
}
video = item;
bestHeight = metaData.Height;
}
}
if (video != null && video.StreamType == StreamType.VIDEO_AUDIO)
{
return;
}
// get best matching audio stream
foreach (YoutubeVideoStreamedItem item in StreamedItem)
{
if (item.StreamType == StreamType.UNKNOWN)
{
continue;
}
VideoMetadata metaData = item.Metadata as VideoMetadata;
if (metaData.SamplesPerSecond >= bestSamplesPerSecond && metaData.SamplesPerSecond <= maxSamplesPerSecond)
{
int idx = video.Metadata.MimeType.IndexOf('/');
if (!metaData.MimeType.EndsWith(video.Metadata.MimeType.Substring(idx)))
{
// only use audio stream that matches with the video stream
continue;
}
if (metaData.SamplesPerSecond == bestSamplesPerSecond)
{
// prefer aac over ogg
if (item.Metadata.MimeType.Equals("audio/webm"))
{
continue;
}
}
audio = item;
bestSamplesPerSecond = metaData.SamplesPerSecond.Value;
}
}
}
