Added some intelligence to the video handler. try to just copy the audio stream when possible, instead of encoding.
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@ -113,14 +113,14 @@ namespace MediaBrowser.Api.HttpHandlers
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audioTranscodeParams.Add("-ab " + bitrate.Value);
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}
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int? channels = GetNumAudioChannelsParam();
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int? channels = GetNumAudioChannelsParam(LibraryItem.Channels);
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if (channels.HasValue)
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{
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audioTranscodeParams.Add("-ac " + channels.Value);
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}
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int? sampleRate = GetSampleRateParam();
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int? sampleRate = GetSampleRateParam(LibraryItem.SampleRate);
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if (sampleRate.HasValue)
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{
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@ -131,41 +131,5 @@ namespace MediaBrowser.Api.HttpHandlers
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return "-i \"" + LibraryItem.Path + "\" -vn " + string.Join(" ", audioTranscodeParams.ToArray()) + " -";
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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()
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{
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// If the user requested a max number of channels
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if (AudioChannels.HasValue)
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{
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// Only specify the param if we're going to downmix
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if (AudioChannels.Value < LibraryItem.Channels)
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{
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return AudioChannels.Value;
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}
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}
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return null;
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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? GetSampleRateParam()
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{
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// If the user requested a max value
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if (AudioSampleRate.HasValue)
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{
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// Only specify the param if we're going to downmix
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if (AudioSampleRate.Value < LibraryItem.SampleRate)
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{
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return AudioSampleRate.Value;
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}
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}
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return null;
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}
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}
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}
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@ -212,5 +212,41 @@ namespace MediaBrowser.Api.HttpHandlers
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process.Dispose();
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}
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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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protected int? GetNumAudioChannelsParam(int libraryItemChannels)
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{
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// If the user requested a max number of channels
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if (AudioChannels.HasValue)
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{
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// Only specify the param if we're going to downmix
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if (AudioChannels.Value < libraryItemChannels)
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{
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return AudioChannels.Value;
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}
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}
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return null;
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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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protected int? GetSampleRateParam(int libraryItemSampleRate)
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{
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// If the user requested a max value
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if (AudioSampleRate.HasValue)
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{
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// Only specify the param if we're going to downmix
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if (AudioSampleRate.Value < libraryItemSampleRate)
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{
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return AudioSampleRate.Value;
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}
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}
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return null;
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}
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}
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}
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@ -1,8 +1,8 @@
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using MediaBrowser.Model.Entities;
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using System.IO;
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namespace MediaBrowser.Api.HttpHandlers
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{
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@ -102,21 +102,31 @@ namespace MediaBrowser.Api.HttpHandlers
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private string GetAudioArguments(string outputFormat)
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{
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string codec = GetAudioCodec(outputFormat);
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AudioStream audioStream = LibraryItem.AudioStreams.FirstOrDefault();
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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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string codec = GetAudioCodec(audioStream, outputFormat);
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string args = "-acodec " + codec;
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if (!codec.Equals("copy", StringComparison.OrdinalIgnoreCase))
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{
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int? channels = GetNumAudioChannels(codec);
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int? channels = GetNumAudioChannelsParam(codec, audioStream.Channels);
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if (channels.HasValue)
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{
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args += " -ac " + channels.Value;
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}
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if (AudioSampleRate.HasValue)
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int? sampleRate = GetSampleRateParam(audioStream.SampleRate);
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if (sampleRate.HasValue)
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{
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args += " -ar " + AudioSampleRate.Value;
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args += " -ar " + sampleRate.Value;
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}
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}
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@ -131,54 +141,65 @@ namespace MediaBrowser.Api.HttpHandlers
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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("flv"))
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{
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return "libx264";
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}
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else if (outputFormat.Equals("ts"))
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{
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return "libx264";
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}
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else if (outputFormat.Equals("asf"))
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{
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return "wmv2";
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}
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return "copy";
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return "libx264";
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}
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private string GetAudioCodec(string outputFormat)
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private string GetAudioCodec(AudioStream audioStream, string outputFormat)
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{
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if (outputFormat.Equals("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("flv"))
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{
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return "libvo_aacenc";
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}
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else if (outputFormat.Equals("ts"))
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{
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return "libvo_aacenc";
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}
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else if (outputFormat.Equals("asf"))
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{
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return "libvo_aacenc";
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}
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// See if we can just copy the stream
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if (HasBasicAudio(audioStream))
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{
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return "copy";
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}
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private int? GetNumAudioChannels(string audioCodec)
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return "libvo_aacenc";
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}
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private int? GetNumAudioChannelsParam(string audioCodec, int libraryItemChannels)
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{
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if (audioCodec.Equals("libvo_aacenc"))
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if (libraryItemChannels > 2 && audioCodec.Equals("libvo_aacenc"))
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{
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// libvo_aacenc currently only supports two channel output
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return 2;
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}
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return AudioChannels;
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return GetNumAudioChannelsParam(libraryItemChannels);
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}
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private bool HasBasicAudio(AudioStream audio)
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{
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int maxChannels = AudioChannels ?? 2;
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if (audio.Channels > maxChannels)
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{
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return false;
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}
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if (audio.AudioFormat.IndexOf("aac", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return true;
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}
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if (audio.AudioFormat.IndexOf("ac-3", StringComparison.OrdinalIgnoreCase) != -1 || audio.AudioFormat.IndexOf("ac3", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return true;
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}
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if (audio.AudioFormat.IndexOf("mpeg", StringComparison.OrdinalIgnoreCase) != -1 || audio.AudioFormat.IndexOf("mp3", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return true;
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}
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return false;
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}
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}
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}
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