/// <summary>
/// Generate single encoded video stream based on JOB and OUTPUT DEFINITION
/// </summary>
/// <param name="v">Defines the video stream being generated</param>
/// <param name="j">The overall job for this encode run</param>
/// <param name="xEncoder">libx264 or libx265</param>
public void EncodeX(VideoOutputDefinition v, VideoEncodeJob j, string xEncoder)
{
MediaProperties ma = j.InputMedia[0];
MediaStream vs = ma.Streams[ma.FirstVideoIndex];
//implicitly set frame rate.
//To do: this needs to be rationals, not floats
var rateString = vs.VideoFrameRate > 0 ? $"-r {((j.MatchRate != 0) ? j.MatchRate : vs.VideoFrameRate)}" : String.Empty;
//Select proper prefix based on input media.
//MPEG files require a specific syntax on the input to prevent time-code issues.
var FFRoot = this.MpegFiles.Contains(Path.GetExtension(ma.MediaFile).ToLower()) ? this.FFRootCmdMpg : this.FFRootCmdDefault;
FilterChain f = this.ConfigureFilters(v, j);
for (int pass = 1; pass <= v.NumPasses; pass++)
{
var FFCmd = $"{FFRoot} -i {j.InputMedia[0].MediaFile} {f.GetVideoFilters()} " +
$"-pix_fmt {this.PixelFormatMap[j.PixelFmt]} " +
$"-preset {this.EncoderPresetMap[j.Preset]} " +
$"-an -c:v lib{xEncoder} " +
$"-metadata:s:v:0 language={j.Language} " +
//ToDo: this needs to be a rational like "24000/1001" to prevent rate drift during sitching or concetnation.
$"{rateString} " +
$"{this.BuildX26xEncOptions(v, j, pass, xEncoder)} " +
$"{Path.Combine(j.OutputFolder, v.OutputFileName)}";
//Run
this.utils.LogProxy($"\r\nSTARTING {xEncoder} Encode pass {pass} of {v.NumPasses}", Utilities.LogLevel.Info);
this.ExecuteFFMpeg_LogProgress(FFCmd, ma.MediaDuration);
}
}
private string RunScan(MediaProperties ma, FilterChain fc, int startSeconds = 0, int scanDuration = 0)
{
var videoStream = ma.Streams.FirstOrDefault(m => m.StreamType == StreamType.Video);
if (scanDuration == 0)
{
scanDuration = Convert.ToInt32(ma.MediaDuration);
}
var scanCmd =
$" -ss {startSeconds} -y -i {ma.MediaFile} -pix_fmt yuv420p -t {scanDuration} {fc.GetVideoFilters()} -an -f null NUL";
return(this.ExecuteFFMpeg_LogProgress(scanCmd, scanDuration).StdErr);
}
