static IEnumerable <IStreamInfo> GetOptimalStreams(StreamManifest streamManifest, Container container)
{
if (streamManifest.GetAudioOnlyStreams().Any() && streamManifest.GetVideoOnlyStreams().Any())
{
// Include audio stream
// Priority: transcoding -> bitrate
yield return(streamManifest
.GetAudioOnlyStreams()
.OrderByDescending(s => s.Container == container)
.ThenByDescending(s => s.Bitrate)
.First());
// Include video stream
if (!container.IsAudioOnly)
{
// Priority: video quality -> transcoding
yield return(streamManifest
.GetVideoOnlyStreams()
.OrderByDescending(s => s.VideoQuality)
.ThenByDescending(s => s.Container == container)
.First());
}
}
// Use single muxed stream if adaptive streams are not available
else
{
// Priority: video quality -> transcoding
yield return(streamManifest
.GetMuxedStreams()
.OrderByDescending(s => s.VideoQuality)
.ThenByDescending(s => s.Container == container)
.First());
}
}
private Utils.VideoSettings GetVideoSettings(VideoId videoId)
{
StreamManifest manifest = client.Videos.Streams.GetManifestAsync(videoId).Result;
Utils.VideoSettings videoSettings = new Utils.VideoSettings()
{
StreamManifest = manifest,
MuxedStreamInfo = manifest.GetMuxedStreams().ToList(),
VideoOnlyStreamInfo = manifest.GetVideoOnlyStreams().ToList(),
AudioOnlyStreamInfo = manifest.GetAudioOnlyStreams().ToList()
};
return(videoSettings);
}
private static IEnumerable <IStreamInfo> GetBestMediaStreamInfos(
StreamManifest streamManifest,
ConversionFormat format)
{
// Use single muxed stream if adaptive streams are not available
if (!streamManifest.GetAudioOnlyStreams().Any() || !streamManifest.GetVideoOnlyStreams().Any())
{
// Priority: video quality -> transcoding
yield return(streamManifest
.GetMuxedStreams()
.OrderByDescending(s => s.VideoQuality)
.ThenByDescending(s => !IsTranscodingRequired(s.Container, format))
.First());
yield break;
}
// Include audio stream
// Priority: transcoding -> bitrate
yield return(streamManifest
.GetAudioOnlyStreams()
.OrderByDescending(s => !IsTranscodingRequired(s.Container, format))
.ThenByDescending(s => s.Bitrate)
.First());
// Include video stream
if (!format.IsAudioOnly)
{
// Priority: video quality -> transcoding
yield return(streamManifest
.GetVideoOnlyStreams()
.OrderByDescending(s => s.VideoQuality)
.ThenByDescending(s => !IsTranscodingRequired(s.Container, format))
.First());
}
}