/// <summary>
/// postprocesses an audio job followed by a video job
/// this constellation happens in automated or one click encoding where we have an audio job linked
/// to a video job
/// first, any audio jobs previous to the audio job in question will be located
/// then we get the size of all audio tracks
/// from the desired final output size stored in the first video job, we calculate the video bitrate
/// we have to use to obtain the final file size, taking container overhead into account
/// the calculated bitrate is then applied to all video jobs
/// </summary>
/// <param name="firstAudio">the audio job that is linked to a video job</param>
/// <param name="firstpass">the video job to which the audio job is linked</param>
public static LogItem calculateBitrate(MainForm mainForm, Job ajob)
{
if (!(ajob is VideoJob))
{
return(null);
}
VideoJob job = (VideoJob)ajob;
if (job.BitrateCalculationInfo == null)
{
return(null);
}
BitrateCalculationInfo b = job.BitrateCalculationInfo;
LogItem log = new LogItem("Bitrate calculation for video");
List <AudioBitrateCalculationStream> audioStreams = new List <AudioBitrateCalculationStream>();
foreach (string s in b.AudioFiles)
{
audioStreams.Add(new AudioBitrateCalculationStream(s));
}
double framerate;
ulong framecount;
JobUtil.getInputProperties(out framecount, out framerate, job.Input);
int bitrateKBits;
ulong videoSizeKB = 0;
try
{
bitrateKBits = BitrateCalculator.CalculateBitrateKBits(job.Settings.Codec, job.Settings.NbBframes > 0, b.Container,
audioStreams.ToArray(), b.DesiredSize.Bytes, framecount, framerate, out videoSizeKB);
}
catch (CalculationException e)
{
log.LogValue("Calculation failed", e, ImageType.Error);
return(log);
}
log.LogValue("Desired size after subtracting audio", videoSizeKB + "KBs");
log.LogValue("Calculated desired bitrate", bitrateKBits + "kbit/s");
foreach (TaggedJob t in b.VideoJobs)
{
((VideoJob)t.Job).Settings.BitrateQuantizer = bitrateKBits;
}
return(log);
}
/// <summary>
/// postprocesses an audio job followed by a video job
/// this constellation happens in automated or one click encoding where we have an audio job linked
/// to a video job
/// first, any audio jobs previous to the audio job in question will be located
/// then we get the size of all audio tracks
/// from the desired final output size stored in the first video job, we calculate the video bitrate
/// we have to use to obtain the final file size, taking container overhead into account
/// the calculated bitrate is then applied to all video jobs
/// </summary>
/// <param name="firstAudio">the audio job that is linked to a video job</param>
/// <param name="firstpass">the video job to which the audio job is linked</param>
public static void calculateBitrate(MainForm mainForm, Job ajob)
{
if (!(ajob is VideoJob))
{
return;
}
VideoJob job = (VideoJob)ajob;
if (job.BitrateCalculationInfo == null)
{
return;
}
BitrateCalculationInfo b = job.BitrateCalculationInfo;
mainForm.addToLog("Doing bitrate calculation...");
List <AudioBitrateCalculationStream> audioStreams = new List <AudioBitrateCalculationStream>();
foreach (string s in b.AudioFiles)
{
audioStreams.Add(new AudioBitrateCalculationStream(s));
}
double framerate;
ulong framecount;
JobUtil.getInputProperties(out framecount, out framerate, job.Input);
int bitrateKBits;
ulong videoSizeKB = 0;
try
{
bitrateKBits = BitrateCalculator.CalculateBitrateKBits(job.Settings.Codec, job.Settings.NbBframes > 0, b.Container,
audioStreams.ToArray(), b.DesiredSize.Bytes, framecount, framerate, out videoSizeKB);
}
catch (CalculationException e)
{
mainForm.addToLog("Calculation failed with message '{0}'", e);
return;
}
mainForm.addToLog("Desired video size after subtracting audio size is {0}KBs. Setting the desired bitrate of the subsequent video jobs to {1} kbit/s.",
videoSizeKB, bitrateKBits);
foreach (TaggedJob t in b.VideoJobs)
{
((VideoJob)t.Job).Settings.BitrateQuantizer = bitrateKBits;
}
}
