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@@ -1,5 +1,6 @@
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using MediaBrowser.Common.Drawing;
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using MediaBrowser.Common.Net.Handlers;
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+using MediaBrowser.Model.DTO;
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using MediaBrowser.Model.Entities;
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using System;
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using System.Collections.Generic;
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@@ -15,7 +16,7 @@ namespace MediaBrowser.Api.HttpHandlers
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/// Supported output formats: mkv,m4v,mp4,asf,wmv,mov,webm,ogv,3gp,avi,ts,flv
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/// </summary>
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[Export(typeof(BaseHandler))]
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- class VideoHandler : BaseMediaHandler<Video, string>
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+ class VideoHandler : BaseMediaHandler<Video, VideoOutputFormats>
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{
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public override bool HandlesRequest(HttpListenerRequest request)
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{
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@@ -25,17 +26,20 @@ namespace MediaBrowser.Api.HttpHandlers
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/// <summary>
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/// We can output these files directly, but we can't encode them
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/// </summary>
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- protected override IEnumerable<string> UnsupportedOutputEncodingFormats
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+ protected override IEnumerable<VideoOutputFormats> UnsupportedOutputEncodingFormats
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{
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get
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{
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// mp4, 3gp, mov - muxer does not support non-seekable output
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// avi, mov, mkv, m4v - can't stream these when encoding. the player will try to download them completely before starting playback.
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// wmv - can't seem to figure out the output format name
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- return new string[] { "mp4", "3gp", "m4v", "mkv", "avi", "mov", "wmv" };
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+ return new VideoOutputFormats[] { VideoOutputFormats.Mp4, VideoOutputFormats.ThreeGP, VideoOutputFormats.M4v, VideoOutputFormats.Mkv, VideoOutputFormats.Avi, VideoOutputFormats.Mov, VideoOutputFormats.Wmv };
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}
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}
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+ /// <summary>
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+ /// Determines whether or not we can just output the original file directly
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+ /// </summary>
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protected override bool RequiresConversion()
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{
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string currentFormat = Path.GetExtension(LibraryItem.Path).Replace(".", string.Empty);
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@@ -52,11 +56,13 @@ namespace MediaBrowser.Api.HttpHandlers
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return true;
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}
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+ // See if the video requires conversion
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if (RequiresVideoConversion())
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{
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return true;
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}
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+ // See if the audio requires conversion
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AudioStream audioStream = (LibraryItem.AudioStreams ?? new List<AudioStream>()).FirstOrDefault();
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if (audioStream != null)
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@@ -72,24 +78,24 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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/// <summary>
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- /// Translates the file extension to the format param that follows "-f" on the ffmpeg command line
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+ /// Translates the output file extension to the format param that follows "-f" on the ffmpeg command line
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/// </summary>
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- private string GetFFMpegOutputFormat(string outputFormat)
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+ private string GetFFMpegOutputFormat(VideoOutputFormats outputFormat)
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{
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- if (outputFormat.Equals("mkv", StringComparison.OrdinalIgnoreCase))
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+ if (outputFormat == VideoOutputFormats.Mkv)
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{
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return "matroska";
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}
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- else if (outputFormat.Equals("ts", StringComparison.OrdinalIgnoreCase))
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+ else if (outputFormat == VideoOutputFormats.Ts)
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{
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return "mpegts";
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}
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- else if (outputFormat.Equals("ogv", StringComparison.OrdinalIgnoreCase))
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+ else if (outputFormat == VideoOutputFormats.Ogv)
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{
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return "ogg";
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}
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- return outputFormat;
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+ return outputFormat.ToString().ToLower();
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}
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/// <summary>
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@@ -99,7 +105,7 @@ namespace MediaBrowser.Api.HttpHandlers
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{
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List<string> audioTranscodeParams = new List<string>();
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- string outputFormat = GetConversionOutputFormat();
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+ VideoOutputFormats outputFormat = GetConversionOutputFormat();
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return string.Format("-i \"{0}\" -threads 0 {1} {2} -f {3} -",
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LibraryItem.Path,
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@@ -109,14 +115,20 @@ namespace MediaBrowser.Api.HttpHandlers
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);
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}
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- private string GetVideoArguments(string outputFormat)
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+ /// <summary>
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+ /// Gets video arguments to pass to ffmpeg
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+ /// </summary>
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+ private string GetVideoArguments(VideoOutputFormats outputFormat)
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{
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+ // Get the output codec name
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string codec = GetVideoCodec(outputFormat);
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string args = "-vcodec " + codec;
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+ // If we're encoding video, add additional params
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if (!codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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+ // Add resolution params, if specified
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if (Width.HasValue || Height.HasValue || MaxHeight.HasValue || MaxWidth.HasValue)
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{
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Size size = DrawingUtils.Resize(LibraryItem.Width, LibraryItem.Height, Width, Height, MaxWidth, MaxHeight);
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@@ -128,21 +140,28 @@ namespace MediaBrowser.Api.HttpHandlers
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return args;
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}
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- private string GetAudioArguments(string outputFormat)
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+ /// <summary>
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+ /// Gets audio arguments to pass to ffmpeg
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+ /// </summary>
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+ private string GetAudioArguments(VideoOutputFormats outputFormat)
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{
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AudioStream audioStream = (LibraryItem.AudioStreams ?? new List<AudioStream>()).FirstOrDefault();
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+ // If the video doesn't have an audio stream, return empty
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if (audioStream == null)
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{
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return string.Empty;
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}
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+ // Get the output codec name
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string codec = GetAudioCodec(audioStream, outputFormat);
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string args = "-acodec " + codec;
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+ // If we're encoding audio, add additional params
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if (!codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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+ // Add the number of audio channels
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int? channels = GetNumAudioChannelsParam(codec, audioStream.Channels);
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if (channels.HasValue)
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@@ -150,6 +169,7 @@ namespace MediaBrowser.Api.HttpHandlers
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args += " -ac " + channels.Value;
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}
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+ // Add the audio sample rate
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int? sampleRate = GetSampleRateParam(audioStream.SampleRate);
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if (sampleRate.HasValue)
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@@ -162,26 +182,32 @@ namespace MediaBrowser.Api.HttpHandlers
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return args;
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}
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- private string GetVideoCodec(string outputFormat)
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+ /// <summary>
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+ /// Gets the name of the output video codec
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+ /// </summary>
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+ private string GetVideoCodec(VideoOutputFormats outputFormat)
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{
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- if (outputFormat.Equals("webm"))
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+ // Some output containers require specific codecs
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+
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+ if (outputFormat == VideoOutputFormats.Webm)
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{
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// Per webm specification, it must be vpx
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return "libvpx";
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}
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- else if (outputFormat.Equals("asf"))
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+ else if (outputFormat == VideoOutputFormats.Asf)
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{
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return "wmv2";
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}
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- else if (outputFormat.Equals("wmv"))
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+ else if (outputFormat == VideoOutputFormats.Wmv)
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{
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return "wmv2";
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}
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- else if (outputFormat.Equals("ogv"))
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+ else if (outputFormat == VideoOutputFormats.Ogv)
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{
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return "libtheora";
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}
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+ // Skip encoding when possible
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if (!RequiresVideoConversion())
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{
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return "copy";
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@@ -190,27 +216,32 @@ namespace MediaBrowser.Api.HttpHandlers
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return "libx264";
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}
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- private string GetAudioCodec(AudioStream audioStream, string outputFormat)
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+ /// <summary>
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+ /// Gets the name of the output audio codec
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+ /// </summary>
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+ private string GetAudioCodec(AudioStream audioStream, VideoOutputFormats outputFormat)
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{
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- if (outputFormat.Equals("webm"))
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+ // Some output containers require specific codecs
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+
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+ if (outputFormat == VideoOutputFormats.Webm)
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{
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// Per webm specification, it must be vorbis
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return "libvorbis";
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}
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- else if (outputFormat.Equals("asf"))
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+ else if (outputFormat == VideoOutputFormats.Asf)
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{
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return "wmav2";
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}
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- else if (outputFormat.Equals("wmv"))
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+ else if (outputFormat == VideoOutputFormats.Wmv)
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{
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return "wmav2";
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}
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- else if (outputFormat.Equals("ogv"))
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+ else if (outputFormat == VideoOutputFormats.Ogv)
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{
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return "libvorbis";
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}
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- // See if we can just copy the stream
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+ // Skip encoding when possible
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if (!RequiresAudioConversion(audioStream))
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{
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return "copy";
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@@ -219,6 +250,9 @@ namespace MediaBrowser.Api.HttpHandlers
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return "libvo_aacenc";
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}
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+ /// <summary>
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+ /// Gets the number of audio channels to specify on the command line
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+ /// </summary>
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private int? GetNumAudioChannelsParam(string audioCodec, int libraryItemChannels)
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{
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if (libraryItemChannels > 2)
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@@ -238,9 +272,14 @@ namespace MediaBrowser.Api.HttpHandlers
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return GetNumAudioChannelsParam(libraryItemChannels);
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}
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+ /// <summary>
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+ /// Determines if the video stream requires encoding
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+ /// </summary>
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private bool RequiresVideoConversion()
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{
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// Check dimensions
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+
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+ // If a specific width is required, validate that
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if (Width.HasValue)
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{
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if (Width.Value != LibraryItem.Width)
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@@ -248,6 +287,8 @@ namespace MediaBrowser.Api.HttpHandlers
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return true;
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}
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}
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+
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+ // If a specific height is required, validate that
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if (Height.HasValue)
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{
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if (Height.Value != LibraryItem.Height)
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@@ -255,6 +296,8 @@ namespace MediaBrowser.Api.HttpHandlers
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return true;
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}
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}
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+
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+ // If a max width is required, validate that
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if (MaxWidth.HasValue)
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{
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if (MaxWidth.Value < LibraryItem.Width)
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@@ -262,6 +305,8 @@ namespace MediaBrowser.Api.HttpHandlers
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return true;
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}
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}
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+
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+ // If a max height is required, validate that
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if (MaxHeight.HasValue)
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{
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if (MaxHeight.Value < LibraryItem.Height)
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@@ -270,6 +315,7 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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}
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+ // If the codec is already h264, don't encode
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if (LibraryItem.Codec.IndexOf("264", StringComparison.OrdinalIgnoreCase) != -1 || LibraryItem.Codec.IndexOf("avc", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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@@ -278,8 +324,13 @@ namespace MediaBrowser.Api.HttpHandlers
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return false;
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}
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+ /// <summary>
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+ /// Determines if the audio stream requires encoding
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+ /// </summary>
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private bool RequiresAudioConversion(AudioStream audio)
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{
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+
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+ // If the input stream has more audio channels than the client can handle, we need to encode
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if (AudioChannels.HasValue)
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{
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if (audio.Channels > AudioChannels.Value)
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@@ -288,14 +339,18 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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}
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+ // Aac, ac-3 and mp3 are all pretty much universally supported. No need to encode them
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+
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if (audio.Codec.IndexOf("aac", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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}
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+
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if (audio.Codec.IndexOf("ac-3", StringComparison.OrdinalIgnoreCase) != -1 || audio.Codec.IndexOf("ac3", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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}
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+
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if (audio.Codec.IndexOf("mpeg", StringComparison.OrdinalIgnoreCase) != -1 || audio.Codec.IndexOf("mp3", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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@@ -304,6 +359,9 @@ namespace MediaBrowser.Api.HttpHandlers
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return true;
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}
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+ /// <summary>
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+ /// Gets the fixed output video height, in pixels
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+ /// </summary>
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private int? Height
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{
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get
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@@ -319,6 +377,9 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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}
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+ /// <summary>
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+ /// Gets the fixed output video width, in pixels
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+ /// </summary>
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private int? Width
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{
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get
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@@ -334,6 +395,9 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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}
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+ /// <summary>
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+ /// Gets the maximum output video height, in pixels
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+ /// </summary>
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private int? MaxHeight
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{
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get
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@@ -349,6 +413,9 @@ namespace MediaBrowser.Api.HttpHandlers
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}
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}
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+ /// <summary>
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+ /// Gets the maximum output video width, in pixels
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+ /// </summary>
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private int? MaxWidth
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{
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get
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