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fix merge conflict

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pull/702/head
Luke Pulverenti 9 years ago
parent 8211e3daeb
commit 949d23f06a
1 changed files with 344 additions and 2 deletions
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346
MediaBrowser.MediaEncoding/Encoder/MediaEncoder.cs
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@ -135,7 +135,9 @@ namespace MediaBrowser.MediaEncoding.Encoder
var inputFiles = MediaEncoderHelpers.GetInputArgument(FileSystem, request.InputPath, request.Protocol, request.MountedIso, request.PlayableStreamFileNames);
return GetMediaInfoInternal(GetInputArgument(inputFiles, request.Protocol), request.InputPath, request.Protocol, extractChapters,
var extractKeyFrameInterval = request.ExtractKeyFrameInterval && request.Protocol == MediaProtocol.File && request.VideoType == VideoType.VideoFile;
return GetMediaInfoInternal(GetInputArgument(inputFiles, request.Protocol), request.InputPath, request.Protocol, extractChapters, extractKeyFrameInterval,
GetProbeSizeArgument(inputFiles, request.Protocol), request.MediaType == DlnaProfileType.Audio, request.VideoType, cancellationToken);
}
@ -169,16 +171,18 @@ namespace MediaBrowser.MediaEncoding.Encoder
/// <param name="primaryPath">The primary path.</param>
/// <param name="protocol">The protocol.</param>
/// <param name="extractChapters">if set to <c>true</c> [extract chapters].</param>
/// <param name="extractKeyFrameInterval">if set to <c>true</c> [extract key frame interval].</param>
/// <param name="probeSizeArgument">The probe size argument.</param>
/// <param name="isAudio">if set to <c>true</c> [is audio].</param>
/// <param name="videoType">Type of the video.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <returns>Task{MediaInfoResult}.</returns>
/// <exception cref="System.ApplicationException">ffprobe failed - streams and format are both null.</exception>
/// <exception cref="System.ApplicationException"></exception>
private async Task<Model.MediaInfo.MediaInfo> GetMediaInfoInternal(string inputPath,
string primaryPath,
MediaProtocol protocol,
bool extractChapters,
bool extractKeyFrameInterval,
string probeSizeArgument,
bool isAudio,
VideoType videoType,
@ -258,6 +262,43 @@ namespace MediaBrowser.MediaEncoding.Encoder
var mediaInfo = new ProbeResultNormalizer(_logger, FileSystem).GetMediaInfo(result, videoType, isAudio, primaryPath, protocol);
var videoStream = mediaInfo.MediaStreams.FirstOrDefault(i => i.Type == MediaStreamType.Video);
if (videoStream != null)
{
var isInterlaced = await DetectInterlaced(mediaInfo, videoStream, inputPath, probeSizeArgument).ConfigureAwait(false);
if (isInterlaced)
{
videoStream.IsInterlaced = true;
}
}
if (extractKeyFrameInterval && mediaInfo.RunTimeTicks.HasValue)
{
if (ConfigurationManager.Configuration.EnableVideoFrameByFrameAnalysis && mediaInfo.Size.HasValue)
{
foreach (var stream in mediaInfo.MediaStreams)
{
if (EnableKeyframeExtraction(mediaInfo, stream))
{
try
{
stream.KeyFrames = await GetKeyFrames(inputPath, stream.Index, cancellationToken).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
}
catch (Exception ex)
{
_logger.ErrorException("Error getting key frame interval", ex);
}
}
}
}
}
return mediaInfo;
}
catch
@ -271,8 +312,309 @@ namespace MediaBrowser.MediaEncoding.Encoder
_ffProbeResourcePool.Release();
}
}
throw new ApplicationException(string.Format("FFProbe failed for {0}", inputPath));
}
private async Task<bool> DetectInterlaced(MediaSourceInfo video, MediaStream videoStream, string inputPath, string probeSizeArgument)
{
if (video.Protocol != MediaProtocol.File)
{
return false;
}
var formats = (video.Container ?? string.Empty).Split(',').ToList();
// Take a shortcut and limit this to containers that are likely to have interlaced content
if (!formats.Contains("ts", StringComparer.OrdinalIgnoreCase) &&
!formats.Contains("mpegts", StringComparer.OrdinalIgnoreCase) &&
!formats.Contains("wtv", StringComparer.OrdinalIgnoreCase))
{
return false;
}
var args = "{0} -i {1} -map 0:v:{2} -filter:v idet -frames:v 500 -an -f null /dev/null";
var process = new Process
{
StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
UseShellExecute = false,
// Must consume both or ffmpeg may hang due to deadlocks. See comments below.
RedirectStandardOutput = true,
RedirectStandardError = true,
RedirectStandardInput = true,
FileName = FFMpegPath,
Arguments = string.Format(args, probeSizeArgument, inputPath, videoStream.Index.ToString(CultureInfo.InvariantCulture)).Trim(),
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false
},
EnableRaisingEvents = true
};
_logger.Info("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
var idetFoundInterlaced = false;
using (var processWrapper = new ProcessWrapper(process, this, _logger))
{
try
{
StartProcess(processWrapper);
}
catch (Exception ex)
{
_logger.ErrorException("Error starting ffprobe", ex);
throw;
}
try
{
process.BeginOutputReadLine();
using (var reader = new StreamReader(process.StandardError.BaseStream))
{
while (!reader.EndOfStream)
{
var line = await reader.ReadLineAsync().ConfigureAwait(false);
if (line.StartsWith("[Parsed_idet", StringComparison.OrdinalIgnoreCase))
{
var idetResult = AnalyzeIdetResult(line);
if (idetResult.HasValue)
{
if (!idetResult.Value)
{
return false;
}
idetFoundInterlaced = true;
}
}
}
}
}
catch
{
StopProcess(processWrapper, 100, true);
throw;
}
}
return idetFoundInterlaced;
}
private bool? AnalyzeIdetResult(string line)
{
// As you can see, the filter only guessed one frame as progressive.
// Results like this are pretty typical. So if less than 30% of the detections are in the "Undetermined" category, then I only consider the video to be interlaced if at least 65% of the identified frames are in either the TFF or BFF category.
// In this case (310 + 311)/(622) = 99.8% which is well over the 65% metric. I may refine that number with more testing but I honestly do not believe I will need to.
// http://awel.domblogger.net/videoTranscode/interlace.html
var index = line.IndexOf("detection:", StringComparison.OrdinalIgnoreCase);
if (index == -1)
{
return null;
}
line = line.Substring(index).Trim();
var parts = line.Split(' ').Where(i => !string.IsNullOrWhiteSpace(i)).Select(i => i.Trim()).ToList();
if (parts.Count < 2)
{
return null;
}
double tff = 0;
double bff = 0;
double progressive = 0;
double undetermined = 0;
double total = 0;
for (var i = 0; i < parts.Count - 1; i++)
{
var part = parts[i];
if (string.Equals(part, "tff:", StringComparison.OrdinalIgnoreCase))
{
tff = GetNextPart(parts, i);
total += tff;
}
else if (string.Equals(part, "bff:", StringComparison.OrdinalIgnoreCase))
{
bff = GetNextPart(parts, i);
total += tff;
}
else if (string.Equals(part, "progressive:", StringComparison.OrdinalIgnoreCase))
{
progressive = GetNextPart(parts, i);
total += progressive;
}
else if (string.Equals(part, "undetermined:", StringComparison.OrdinalIgnoreCase))
{
undetermined = GetNextPart(parts, i);
total += undetermined;
}
}
if (total == 0)
{
return null;
}
if ((undetermined / total) >= .3)
{
return false;
}
if (((tff + bff) / total) >= .65)
{
return true;
}
return false;
}
private int GetNextPart(List<string> parts, int index)
{
var next = parts[index + 1];
int value;
if (int.TryParse(next, NumberStyles.Any, CultureInfo.InvariantCulture, out value))
{
return value;
}
return 0;
}
private bool EnableKeyframeExtraction(MediaSourceInfo mediaSource, MediaStream videoStream)
{
if (videoStream.Type == MediaStreamType.Video && string.Equals(videoStream.Codec, "h264", StringComparison.OrdinalIgnoreCase) &&
!videoStream.IsInterlaced &&
!(videoStream.IsAnamorphic ?? false))
{
var audioStreams = mediaSource.MediaStreams.Where(i => i.Type == MediaStreamType.Audio).ToList();
// If it has aac audio then it will probably direct stream anyway, so don't bother with this
if (audioStreams.Count == 1 && string.Equals(audioStreams[0].Codec, "aac", StringComparison.OrdinalIgnoreCase))
{
return false;
}
return true;
}
return false;
}
private async Task<List<int>> GetKeyFrames(string inputPath, int videoStreamIndex, CancellationToken cancellationToken)
{
inputPath = inputPath.Split(new[] { ':' }, 2).Last().Trim('"');
const string args = "-show_packets -print_format compact -select_streams v:{1} -show_entries packet=flags -show_entries packet=pts_time \"{0}\"";
var process = new Process
{
StartInfo = new ProcessStartInfo
{
CreateNoWindow = true,
UseShellExecute = false,
// Must consume both or ffmpeg may hang due to deadlocks. See comments below.
RedirectStandardOutput = true,
RedirectStandardError = true,
FileName = FFProbePath,
Arguments = string.Format(args, inputPath, videoStreamIndex.ToString(CultureInfo.InvariantCulture)).Trim(),
WindowStyle = ProcessWindowStyle.Hidden,
ErrorDialog = false
},
EnableRaisingEvents = true
};
_logger.Info("{0} {1}", process.StartInfo.FileName, process.StartInfo.Arguments);
using (process)
{
var start = DateTime.UtcNow;
process.Start();
var lines = new List<int>();
try
{
process.BeginErrorReadLine();
await StartReadingOutput(process.StandardOutput.BaseStream, lines, cancellationToken).ConfigureAwait(false);
}
catch (OperationCanceledException)
{
if (cancellationToken.IsCancellationRequested)
{
throw;
}
}
process.WaitForExit();
_logger.Info("Keyframe extraction took {0} seconds", (DateTime.UtcNow - start).TotalSeconds);
//_logger.Debug("Found keyframes {0}", string.Join(",", lines.ToArray()));
return lines;
}
}
private async Task StartReadingOutput(Stream source, List<int> keyframes, CancellationToken cancellationToken)
{
try
{
using (var reader = new StreamReader(source))
{
var text = await reader.ReadToEndAsync().ConfigureAwait(false);
var lines = StringHelper.RegexSplit(text, "[\r\n]+");
foreach (var line in lines)
{
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
var values = line.Split('|')
.Where(i => !string.IsNullOrWhiteSpace(i))
.Select(i => i.Split('='))
.Where(i => i.Length == 2)
.ToDictionary(i => i[0], i => i[1]);
string flags;
if (values.TryGetValue("flags", out flags) && string.Equals(flags, "k", StringComparison.OrdinalIgnoreCase))
{
string pts_time;
double frameSeconds;
if (values.TryGetValue("pts_time", out pts_time) && double.TryParse(pts_time, NumberStyles.Any, CultureInfo.InvariantCulture, out frameSeconds))
{
var ms = frameSeconds * 1000;
keyframes.Add(Convert.ToInt32(ms));
}
}
}
}
}
catch (OperationCanceledException)
{
throw;
}
catch (Exception ex)
{
_logger.ErrorException("Error reading ffprobe output", ex);
}
}
/// <summary>
/// The us culture
/// </summary>

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