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Avoid slow duration check if duration metadata for video stream is avail.

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N00MKRAD
2024-10-16 20:15:46 +02:00
parent 1f8541f69e
commit 6f0b3b39a3
2 changed files with 55 additions and 14 deletions
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67
CodeLegacy/Media/FfmpegCommands.cs
View File

@@ -91,17 +91,59 @@ namespace Flowframes
DeleteSource(inputFile);
}
public static async Task<long> GetDurationMs(string inputFile)
public static async Task<long> GetDurationMs(string inputFile, bool demuxInsteadOfPacketTs = false)
{
Logger.Log($"GetDuration({inputFile}) - Reading duration by demuxing.", true, false, "ffmpeg");
string args = $"ffmpeg -loglevel panic -stats -i {inputFile.Wrap()} -map 0:v:0 -c copy -f null NUL";
var outputLines = NUtilsTemp.OsUtils.RunCommand($"cd /D {GetAvDir().Wrap()} && {args}").SplitIntoLines().Where(l => l.IsNotEmpty() && l.MatchesWildcard("*time=* *"));
Logger.Log($"GetDuration({inputFile}) - Reading duration by checking metadata.", true, false, "ffmpeg");
string argsMeta = $"ffprobe -v quiet -show_streams -select_streams v:0 -show_entries stream=duration {inputFile.Wrap()}";
var outputLinesMeta = NUtilsTemp.OsUtils.RunCommand($"cd /D {GetAvDir().Wrap()} && {argsMeta}").SplitIntoLines();
if (outputLines == null || outputLines.Count() == 0)
return 0;
foreach (string line in outputLinesMeta.Where(l => l.MatchesWildcard("*?=?*")))
{
var split = line.Split('=');
string key = split[0];
string value = split[1];
string output = outputLines.Last().Split("time=")[1].Split(" ")[0];
return (long)TimeSpan.ParseExact(output, @"hh\:mm\:ss\.ff", null).TotalMilliseconds;
if(value.Contains("N/A"))
continue;
if (key == "duration")
{
return (long)TimeSpan.FromSeconds(value.GetFloat()).TotalMilliseconds;
}
else if (key == "TAG:DURATION")
{
string[] tsSplit = value.Split(':');
int hours = tsSplit[0].GetInt();
int minutes = tsSplit[1].GetInt();
float seconds = tsSplit[2].GetFloat();
return (long)TimeSpan.FromHours(hours).Add(TimeSpan.FromMinutes(minutes)).Add(TimeSpan.FromSeconds(seconds)).TotalMilliseconds;
}
}
if (demuxInsteadOfPacketTs)
{
Logger.Log($"GetDuration({inputFile}) - Reading duration by demuxing.", true, false, "ffmpeg");
string argsDemux = $"ffmpeg -loglevel panic -stats -i {inputFile.Wrap()} -map 0:v:0 -c copy -f null NUL";
var outputLinesDemux = NUtilsTemp.OsUtils.RunCommand($"cd /D {GetAvDir().Wrap()} && {argsDemux}").SplitIntoLines().Where(l => l.IsNotEmpty() && l.MatchesWildcard("*time=* *"));
if (outputLinesDemux == null || outputLinesDemux.Count() == 0)
return 0;
string output = outputLinesDemux.Last().Split("time=")[1].Split(" ")[0];
return (long)TimeSpan.ParseExact(output, @"hh\:mm\:ss\.ff", null).TotalMilliseconds;
}
else
{
Logger.Log($"GetDuration({inputFile}) - Reading duration using packet timestamps.", true, false, "ffmpeg");
string argsPackets = $"ffprobe -v error -select_streams v:0 -show_packets -show_entries packet=dts_time -of csv=p=0 {inputFile.Wrap()}";
var outputLinesPackets = NUtilsTemp.OsUtils.RunCommand($"cd /D {GetAvDir().Wrap()} && {argsPackets}").SplitIntoLines().Where(l => l.IsNotEmpty()).ToList();
if (outputLinesPackets == null || outputLinesPackets.Count == 0)
return 0;
string lastTimestamp = outputLinesPackets.Last().Split('=').Last();
return (long)TimeSpan.FromSeconds(lastTimestamp.GetFloat()).TotalMilliseconds;
}
}
public static async Task<Fraction> GetFramerate(string inputFile, bool preferFfmpeg = false)
@@ -208,14 +250,13 @@ namespace Flowframes
public static async Task<int> ReadFrameCountFfprobePacketCount(string filePath)
{
FfprobeSettings settings = new FfprobeSettings() { Args = $"-select_streams v:0 -count_packets -show_entries stream=nb_read_packets -of csv=p=0 {filePath.Wrap()}", LoggingMode = LogMode.Hidden, LogLevel = "error" };
string output = await RunFfprobe(settings);
string[] lines = output.SplitIntoLines().Where(x => !string.IsNullOrWhiteSpace(x)).ToArray();
string args = $"ffprobe -v error -select_streams v:0 -count_packets -show_entries stream=nb_read_packets -of csv=p=0 {filePath.Wrap()}";
var outputLines = (await Task.Run(() => NUtilsTemp.OsUtils.RunCommand($"cd /D {GetAvDir().Wrap()} && {args}"))).SplitIntoLines().Where(l => l.IsNotEmpty());
if (lines == null || lines.Length < 1)
if (outputLines == null || !outputLines.Any())
return 0;
return lines.Last().GetInt();
return outputLines.Last().GetInt();
}
public static async Task<int> ReadFrameCountFfprobe(string filePath)

2
CodeLegacy/Media/FfmpegUtils.cs
View File

@@ -178,7 +178,7 @@ namespace Flowframes.Media
var ffprobeFps = new Fraction(await GetFfprobeInfoAsync(path, showStreams, "r_frame_rate", streamIdx));
var ffprobeFpsAvg = new Fraction(await GetFfprobeInfoAsync(path, showStreams, "avg_frame_rate", streamIdx));
long durationMs = Interpolate.currentMediaFile.DurationMs;
float calculatedFps = (float)Math.Round(frameCount / (durationMs / 1000f), 5);
float calculatedFps = (float)Math.Round(frameCount / (durationMs / 1000f), 2);
Fraction fps = ffprobeFps.Float > 0f ? ffprobeFps : new Fraction(ffmpegFps);
Fraction avgFps = ffprobeFpsAvg.Float > 0f ? ffprobeFpsAvg : new Fraction(ffmpegTbr);