/// <summary>
/// Handles the MediaChanging event of the MediaControl.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
private void OnMediaChanging(object sender, MediaOpeningEventArgs e)
{
var availableStreams = e.Info.Streams
.Where(s => s.Value.CodecType == (AVMediaType)StreamCycleMediaType)
.Select(x => x.Value)
.ToList();
if (availableStreams.Count <= 0)
{
return;
}
// Allow cyclling though a null stream (means removing the stream)
// Except for video streams.
if (StreamCycleMediaType != MediaType.Video)
{
availableStreams.Add(null);
}
var currentIndex = -1;
switch (StreamCycleMediaType)
{
case MediaType.Audio:
currentIndex = availableStreams.IndexOf(e.Options.AudioStream);
break;
case MediaType.Video:
currentIndex = availableStreams.IndexOf(e.Options.VideoStream);
break;
case MediaType.Subtitle:
currentIndex = availableStreams.IndexOf(e.Options.SubtitleStream);
break;
}
currentIndex += 1;
if (currentIndex >= availableStreams.Count)
{
currentIndex = 0;
}
var newStream = availableStreams[currentIndex];
switch (StreamCycleMediaType)
{
case MediaType.Audio:
e.Options.AudioStream = newStream;
break;
case MediaType.Video:
e.Options.VideoStream = newStream;
break;
case MediaType.Subtitle:
e.Options.SubtitleStream = newStream;
break;
}
}
private void HandleChangeAudioLanguage(MediaOpeningEventArgs e)
{
string currentLang = player.GetSelectedAudio()?.Language;
if (currentLang.ToLower() == selectedlang.ToLower())
{
return;
}
string langAbbreviation = episode.GetLanguageAbbreviation(selectedlang);
var newStream = e.Info.Streams.FirstOrDefault(stream => stream.Value.Language == langAbbreviation);
if (newStream.Value == null)
{
throw new Exception("failed to find audio stream for the language: " + langAbbreviation);
}
e.Options.AudioStream = newStream.Value;
}
/// <summary>
/// Handles the MediaOpening event of the Media control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
private void OnMediaOpening(object sender, MediaOpeningEventArgs e)
{
const string SideLoadAspect = "Client.SideLoad";
// You can start off by adjusting subtitles delay
// e.Options.SubtitlesDelay = TimeSpan.FromSeconds(7); // See issue #216
// Get the local file path from the URL (if possible)
var mediaFilePath = string.Empty;
try
{
var url = new Uri(e.Info.InputUrl);
mediaFilePath = url.IsFile || url.IsUnc ? Path.GetFullPath(url.LocalPath) : string.Empty;
}
catch { /* Ignore Exceptions */ }
// Example of automatically side-loading SRT subs
if (string.IsNullOrWhiteSpace(mediaFilePath) == false)
{
var srtFilePath = Path.ChangeExtension(mediaFilePath, "srt");
if (File.Exists(srtFilePath))
{
e.Options.SubtitlesUrl = srtFilePath;
}
}
// You can force video FPS if necessary
// see: https://github.com/unosquare/ffmediaelement/issues/212
// e.Options.VideoForcedFps = 25;
// An example of specifically selecting a subtitle stream
var subtitleStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_SUBTITLE).Select(kvp => kvp.Value);
var englishSubtitleStream = subtitleStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishSubtitleStream != null)
{
e.Options.SubtitleStream = englishSubtitleStream;
}
// An example of specifically selecting an audio stream
var audioStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_AUDIO).Select(kvp => kvp.Value);
var englishAudioStream = audioStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishAudioStream != null)
{
e.Options.AudioStream = englishAudioStream;
}
// Setting Advanced Video Stream Options is also possible
// ReSharper disable once InvertIf
if (e.Options.VideoStream is StreamInfo videoStream)
{
// If we have a valid seek index let's use it!
if (string.IsNullOrWhiteSpace(mediaFilePath) == false)
{
try
{
// Try to Create or Load a Seek Index
var durationSeconds = e.Info.Duration.TotalSeconds > 0 ? e.Info.Duration.TotalSeconds : 0;
var seekIndex = LoadOrCreateVideoSeekIndex(mediaFilePath, videoStream.StreamIndex, durationSeconds);
// Make sure the seek index belongs to the media file path
if (seekIndex != null &&
string.IsNullOrWhiteSpace(seekIndex.SourceUrl) == false &&
seekIndex.SourceUrl.Equals(mediaFilePath) &&
seekIndex.StreamIndex == videoStream.StreamIndex)
{
// Set the index on the options object.
e.Options.VideoSeekIndex = seekIndex;
}
}
catch (Exception ex)
{
// Log the exception, and ignore it. Continue execution.
Media?.LogError(SideLoadAspect, "Error loading seek index data.", ex);
}
}
// Hardware device priorities
var deviceCandidates = new[]
{
AVHWDeviceType.AV_HWDEVICE_TYPE_CUDA,
AVHWDeviceType.AV_HWDEVICE_TYPE_D3D11VA,
AVHWDeviceType.AV_HWDEVICE_TYPE_DXVA2
};
// Hardware device selection
if (videoStream.FPS <= 30)
{
foreach (var deviceType in deviceCandidates)
{
var accelerator = videoStream.HardwareDevices.FirstOrDefault(d => d.DeviceType == deviceType);
if (accelerator == null)
{
continue;
}
if (GuiContext.Current.IsInDebugMode)
{
e.Options.VideoHardwareDevice = accelerator;
}
break;
}
}
// Start building a video filter
var videoFilter = new StringBuilder();
// The yadif filter de-interlaces the video; we check the field order if we need
// to de-interlace the video automatically
if (videoStream.IsInterlaced)
{
videoFilter.Append("yadif,");
}
// Scale down to maximum 1080p screen resolution.
if (videoStream.PixelHeight > 1080)
{
// e.Options.VideoHardwareDevice = null;
videoFilter.Append("scale=-1:1080,");
}
e.Options.VideoFilter = videoFilter.ToString().TrimEnd(',');
// Since the MediaElement control belongs to a different thread
// we have to set properties on its UI thread.
GuiContext.Current.EnqueueInvoke(() =>
{
Media.ClosedCaptionsChannel = videoStream.HasClosedCaptions ?
CaptionsChannel.CC1 : CaptionsChannel.CCP;
});
}
// e.Options.AudioFilter = "aecho=0.8:0.9:1000:0.3";
// e.Options.AudioFilter = "chorus=0.5:0.9:50|60|40:0.4|0.32|0.3:0.25|0.4|0.3:2|2.3|1.3";
}
/// <summary>
/// Handles the MediaOpening event of the Media control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
private void OnMediaOpening(object sender, MediaOpeningEventArgs e)
{
const string SideLoadAspect = "Client.SideLoad";
// You can start off by adjusting subtitles delay
// This defaults to 0 but you can delay (or advance with a negative delay)
// the subtitle timestamps.
e.Options.SubtitlesDelay = TimeSpan.Zero; // See issue #216
// You can render audio and video as it becomes available but the downside of disabling time
// synchronization is that video and audio will run on their own independent clocks.
// Do not disable Time Sync for streams that need synchronized audio and video.
e.Options.IsTimeSyncDisabled =
e.Info.Format == "libndi_newtek" ||
e.Info.InputUrl.StartsWith("rtsp://uno");
// You can disable the requirement of buffering packets by setting the playback
// buffer percent to 0. Values of less than 0.5 for live or network streams are not recommended.
e.Options.MinimumPlaybackBufferPercent = e.Info.Format == "libndi_newtek" ? 0 : 0.5;
// The audio renderer will try to keep the audio hardware synchronized
// to the playback position by default.
// A few WMV files I have tested don't have continuous enough audio packets to support
// perfect synchronization between audio and video so we simply disable it.
// Also if time synchronization is disabled, the recommendation is to also disable audio synchronization.
Media.RendererOptions.AudioDisableSync =
e.Options.IsTimeSyncDisabled ||
e.Info.InputUrl.EndsWith(".wmv");
// Legacy audio out is the use of the WinMM api as opposed to using DirectSound
// Enable legacy audio out if you are having issues with the DirectSound driver.
Media.RendererOptions.UseLegacyAudioOut = e.Info.InputUrl.EndsWith(".wmv");
// You can limit how often the video renderer updates the picture.
// We keep it as 0 to refresh the video according to the native stream specification.
Media.RendererOptions.VideoRefreshRateLimit = 0;
// Get the local file path from the URL (if possible)
var mediaFilePath = string.Empty;
try
{
var url = new Uri(e.Info.InputUrl);
mediaFilePath = url.IsFile || url.IsUnc ? Path.GetFullPath(url.LocalPath) : string.Empty;
}
catch { /* Ignore Exceptions */ }
// Example of automatically side-loading SRT subs
if (string.IsNullOrWhiteSpace(mediaFilePath) == false)
{
var srtFilePath = Path.ChangeExtension(mediaFilePath, "srt");
if (File.Exists(srtFilePath))
{
e.Options.SubtitlesUrl = srtFilePath;
}
}
// You can also force video FPS if necessary
// see: https://github.com/unosquare/ffmediaelement/issues/212
// e.Options.VideoForcedFps = 25;
// An example of selecting a specific subtitle stream
var subtitleStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_SUBTITLE).Select(kvp => kvp.Value);
var englishSubtitleStream = subtitleStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishSubtitleStream != null)
{
e.Options.SubtitleStream = englishSubtitleStream;
}
// An example of selecting a specific audio stream
var audioStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_AUDIO).Select(kvp => kvp.Value);
var englishAudioStream = audioStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishAudioStream != null)
{
e.Options.AudioStream = englishAudioStream;
}
// Setting Advanced Video Stream Options is also possible
// ReSharper disable once InvertIf
if (e.Options.VideoStream is StreamInfo videoStream)
{
// If we have a valid seek index let's use it!
if (string.IsNullOrWhiteSpace(mediaFilePath) == false)
{
try
{
// Try to Create or Load a Seek Index
var durationSeconds = e.Info.Duration.TotalSeconds > 0 ? e.Info.Duration.TotalSeconds : 0;
var seekIndex = LoadOrCreateVideoSeekIndex(mediaFilePath, videoStream.StreamIndex, durationSeconds);
// Make sure the seek index belongs to the media file path
if (seekIndex != null &&
string.IsNullOrWhiteSpace(seekIndex.SourceUrl) == false &&
seekIndex.SourceUrl.Equals(mediaFilePath) &&
seekIndex.StreamIndex == videoStream.StreamIndex)
{
// Set the index on the options object.
e.Options.VideoSeekIndex = seekIndex;
}
}
catch (Exception ex)
{
// Log the exception, and ignore it. Continue execution.
Media?.LogError(SideLoadAspect, "Error loading seek index data.", ex);
}
}
// Hardware device priorities
var deviceCandidates = new[]
{
AVHWDeviceType.AV_HWDEVICE_TYPE_CUDA,
AVHWDeviceType.AV_HWDEVICE_TYPE_D3D11VA,
AVHWDeviceType.AV_HWDEVICE_TYPE_DXVA2
};
// Hardware device selection
if (videoStream.FPS <= 30)
{
foreach (var deviceType in deviceCandidates)
{
var accelerator = videoStream.HardwareDevices.FirstOrDefault(d => d.DeviceType == deviceType);
if (accelerator == null)
{
continue;
}
if (GuiContext.Current.IsInDebugMode == true)
{
e.Options.VideoHardwareDevice = accelerator;
}
break;
}
}
// Start building a video filter
var videoFilter = new StringBuilder();
// The yadif filter de-interlaces the video; we check the field order if we need
// to de-interlace the video automatically
if (videoStream.IsInterlaced)
{
videoFilter.Append("yadif,");
}
// Scale down to maximum 1080p screen resolution.
if (videoStream.PixelHeight > 1080)
{
// e.Options.VideoHardwareDevice = null;
videoFilter.Append("scale=-1:1080,");
}
// Example of fisheye correction filter:
// videoFilter.Append("lenscorrection=cx=0.5:cy=0.5:k1=-0.85:k2=0.25,")
e.Options.VideoFilter = videoFilter.ToString().TrimEnd(',');
// Since the MediaElement control belongs to the GUI thread
// and the closed captions channel property is a dependency
// property, we need to set it on the GUI thread.
GuiContext.Current.EnqueueInvoke(() =>
{
Media.ClosedCaptionsChannel = videoStream.HasClosedCaptions ?
CaptionsChannel.CC1 : CaptionsChannel.CCP;
});
}
// Examples of setting audio filters.
// e.Options.AudioFilter = "aecho=0.8:0.9:1000:0.3";
// e.Options.AudioFilter = "chorus=0.5:0.9:50|60|40:0.4|0.32|0.3:0.25|0.4|0.3:2|2.3|1.3";
// e.Options.AudioFilter = "aphaser";
}
/// <summary>
/// Handles the MediaOpening event of the Media control.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
private void OnMediaOpening(object sender, MediaOpeningEventArgs e)
{
// You can start off by adjusting subtitles delay
// e.Options.SubtitlesDelay = TimeSpan.FromSeconds(7); // See issue #216
// Example of automatically side-loading SRT subs
try
{
var inputUrl = e.Info.InputUrl;
var url = new Uri(inputUrl);
if (url.IsFile || url.IsUnc)
{
inputUrl = System.IO.Path.ChangeExtension(url.LocalPath, "srt");
if (System.IO.File.Exists(inputUrl))
{
e.Options.SubtitlesUrl = inputUrl;
}
}
}
catch { }
// You can force video FPS if necessary
// see: https://github.com/unosquare/ffmediaelement/issues/212
// e.Options.VideoForcedFps = 25;
// An example of specifcally selecting a subtitle stream
var subtitleStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_SUBTITLE).Select(kvp => kvp.Value);
var englishSubtitleStream = subtitleStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishSubtitleStream != null)
{
e.Options.SubtitleStream = englishSubtitleStream;
}
// An example of specifcally selecting an audio stream
var audioStreams = e.Info.Streams.Where(kvp => kvp.Value.CodecType == AVMediaType.AVMEDIA_TYPE_AUDIO).Select(kvp => kvp.Value);
var englishAudioStream = audioStreams.FirstOrDefault(s => s.Language != null && s.Language.ToLowerInvariant().StartsWith("en"));
if (englishAudioStream != null)
{
e.Options.AudioStream = englishAudioStream;
}
// Setting Advanced Video Stream Options is also possible
var videoStream = e.Options.VideoStream;
if (videoStream != null)
{
// Check if the video requires deinterlacing
var requiresDeinterlace = videoStream.FieldOrder != AVFieldOrder.AV_FIELD_PROGRESSIVE &&
videoStream.FieldOrder != AVFieldOrder.AV_FIELD_UNKNOWN;
// Hardwrae device priorities
var deviceCandidates = new AVHWDeviceType[]
{
AVHWDeviceType.AV_HWDEVICE_TYPE_CUDA,
AVHWDeviceType.AV_HWDEVICE_TYPE_D3D11VA,
AVHWDeviceType.AV_HWDEVICE_TYPE_DXVA2
};
// Hardware device selection
if (videoStream.FPS <= 30)
{
foreach (var deviceType in deviceCandidates)
{
var accelerator = videoStream.HardwareDevices.FirstOrDefault(d => d.DeviceType == deviceType);
if (accelerator != null)
{
if (GuiContext.Current.IsInDebugMode)
{
e.Options.VideoHardwareDevice = accelerator;
}
break;
}
}
}
// Start building a video filter
var videoFilter = new StringBuilder();
// The yadif filter deinterlaces the video; we check the field order if we need
// to deinterlace the video automatically
if (requiresDeinterlace)
{
videoFilter.Append("yadif,");
}
// Scale down to maximum 1080p screen resolution.
if (videoStream.PixelHeight > 1080)
{
// e.Options.VideoHardwareDevice = null;
videoFilter.Append($"scale=-1:1080,");
}
e.Options.VideoFilter = videoFilter.ToString().TrimEnd(',');
// Since the MediaElement control belongs to a different thread
// we have to set properties on its UI thread.
GuiContext.Current.EnqueueInvoke(() =>
{
Media.ClosedCaptionsChannel = videoStream.HasClosedCaptions ?
CaptionsChannel.CC1 : CaptionsChannel.CCP;
});
}
// e.Options.AudioFilter = "aecho=0.8:0.9:1000:0.3";
// e.Options.AudioFilter = "chorus=0.5:0.9:50|60|40:0.4|0.32|0.3:0.25|0.4|0.3:2|2.3|1.3";
}
private void MediaPlayer_MediaChanging(object sender, MediaOpeningEventArgs e)
{
HandleChangeAudioLanguage(e);
}
/// <summary>
/// Handles the MediaChanging event of the MediaControl.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="e">The <see cref="MediaOpeningEventArgs"/> instance containing the event data.</param>
private void OnMediaChanging(object sender, MediaOpeningEventArgs e)
{
ViewModel.NotificationMessage = "Media is updating . . .";
var availableStreams = e.Info.Streams
.Where(s => s.Value.CodecType == (AVMediaType)StreamCycleMediaType)
.Select(x => x.Value)
.ToList();
if (availableStreams.Count <= 0)
{
return;
}
// Allow cycling though a null stream (means removing the stream)
// Except for video streams.
if (StreamCycleMediaType != MediaType.Video)
{
availableStreams.Add(null);
}
int currentIndex;
switch (StreamCycleMediaType)
{
case MediaType.Audio:
{
currentIndex = availableStreams.IndexOf(e.Options.AudioStream);
currentIndex += 1;
if (currentIndex >= (availableStreams.Count - 1))
{
currentIndex = 0;
}
e.Options.AudioStream = availableStreams[currentIndex];
}
break;
case MediaType.Video:
{
currentIndex = availableStreams.IndexOf(e.Options.VideoStream);
currentIndex += 1;
if (currentIndex >= availableStreams.Count)
{
currentIndex = 0;
}
e.Options.VideoStream = availableStreams[currentIndex];
}
break;
case MediaType.Subtitle:
{
currentIndex = availableStreams.IndexOf(e.Options.SubtitleStream);
currentIndex += 1;
if (currentIndex >= availableStreams.Count)
{
currentIndex = 0;
}
e.Options.SubtitleStream = availableStreams[currentIndex];
}
break;
default:
return;
}
}