private void GenerateShotChanges(string videoFileName)
{
var shotChangesGenerator = new ShotChangesGenerator();
var threshold = 0.4m;
if (decimal.TryParse(Configuration.Settings.General.FFmpegSceneThreshold, NumberStyles.AllowDecimalPoint, CultureInfo.InvariantCulture, out var d))
{
threshold = d;
}
using (var process = shotChangesGenerator.GetProcess(videoFileName, threshold))
{
while (!process.HasExited)
{
Application.DoEvents();
System.Threading.Thread.Sleep(100);
if (_abort)
{
DialogResult = DialogResult.Cancel;
process.Kill();
return;
}
}
}
var seconds = ShotChangesGenerator.GetSeconds(shotChangesGenerator.GetTimeCodesString().SplitToLines().ToArray());
if (seconds.Count > 0)
{
ShotChangeHelper.SaveShotChanges(videoFileName, seconds);
}
}
private void RefreshCheckBoxes(string language)
{
_netflixQualityController = new NetflixQualityController {
Language = language, VideoFileName = _videoFileName, FrameRate = _frameRate
};
checkBoxNoItalics.Checked = !_netflixQualityController.AllowItalics;
checkBoxNoItalics.Enabled = !_netflixQualityController.AllowItalics;
int halfSecGapInFrames = (int)Math.Round(_frameRate / 2, MidpointRounding.AwayFromZero);
checkBoxGapBridge.Text = $"Frame gap: 3 to {halfSecGapInFrames - 1} frames => 2 frames";
var shotChangesExist = false;
if (_netflixQualityController.VideoExists)
{
if (ShotChangeHelper.FromDisk(_videoFileName).Count > 0)
{
shotChangesExist = true;
}
}
checkBoxShotChange.Checked = shotChangesExist;
checkBoxShotChange.Enabled = shotChangesExist;
var checkFrameRate = _subtitleFormat.GetType() == new NetflixTimedText().GetType();
checkBoxTtmlFrameRate.Checked = checkFrameRate;
checkBoxTtmlFrameRate.Enabled = checkFrameRate;
var speakerStyle = _netflixQualityController.SpeakerStyle;
var checkBoxSpeakerStyleText = "Dual Speakers: Use a hyphen without a space";
if (speakerStyle == DialogType.DashBothLinesWithSpace)
{
checkBoxSpeakerStyleText = "Dual Speakers: Use a hyphen with a space";
}
else if (speakerStyle == DialogType.DashSecondLineWithSpace)
{
checkBoxSpeakerStyleText = "Dual Speakers: Use a hyphen with a space to denote the second speaker only";
}
else if (speakerStyle == DialogType.DashSecondLineWithoutSpace)
{
checkBoxSpeakerStyleText = "Dual Speakers: Use a hyphen without a space to denote the second speaker only";
}
checkBoxSpeakerStyle.Text = checkBoxSpeakerStyleText;
checkBox17CharsPerSecond.Text = string.Format(LanguageSettings.Current.NetflixQualityCheck.MaximumXCharsPerSecond, _netflixQualityController.CharactersPerSecond);
checkBoxMaxLineLength.Text = string.Format(LanguageSettings.Current.NetflixQualityCheck.MaximumLineLength, _netflixQualityController.SingleLineMaxLength);
}
public void Check(Subtitle subtitle, NetflixQualityController controller)
{
if (!controller.VideoExists)
{
return;
}
var shotChanges = ShotChangeHelper.FromDisk(controller.VideoFileName);
if (shotChanges == null || shotChanges.Count == 0)
{
return;
}
if (Configuration.Settings.General.CurrentVideoIsSmpte)
{
shotChanges = shotChanges.Select(sc => sc /= 1.001).ToList();
}
int halfSecGapInFrames = (int)Math.Round(controller.FrameRate / 2, MidpointRounding.AwayFromZero);
double twoFramesGap = 1000.0 / controller.FrameRate * 2.0;
foreach (Paragraph p in subtitle.Paragraphs)
{
var fixedParagraph = new Paragraph(p, false);
string comment = string.Empty;
List <double> previousStartShotChanges = shotChanges.Where(x => SubtitleFormat.MillisecondsToFrames(x * 1000) < SubtitleFormat.MillisecondsToFrames(p.StartTime.TotalMilliseconds)).ToList();
List <double> nextStartShotChanges = shotChanges.Where(x => SubtitleFormat.MillisecondsToFrames(x * 1000) > SubtitleFormat.MillisecondsToFrames(p.StartTime.TotalMilliseconds)).ToList();
List <double> previousEndShotChanges = shotChanges.Where(x => SubtitleFormat.MillisecondsToFrames(x * 1000) < SubtitleFormat.MillisecondsToFrames(p.EndTime.TotalMilliseconds)).ToList();
List <double> nextEndShotChanges = shotChanges.Where(x => SubtitleFormat.MillisecondsToFrames(x * 1000) > SubtitleFormat.MillisecondsToFrames(p.EndTime.TotalMilliseconds)).ToList();
var onShotChange = shotChanges.FirstOrDefault(x => SubtitleFormat.MillisecondsToFrames(x * 1000) == SubtitleFormat.MillisecondsToFrames(p.EndTime.TotalMilliseconds));
if (previousStartShotChanges.Count > 0)
{
double nearestStartPrevShotChange = previousStartShotChanges.Aggregate((x, y) => Math.Abs(x - p.StartTime.TotalSeconds) < Math.Abs(y - p.StartTime.TotalSeconds) ? x : y);
if (SubtitleFormat.MillisecondsToFrames(p.StartTime.TotalMilliseconds - nearestStartPrevShotChange * 1000) < halfSecGapInFrames)
{
fixedParagraph.StartTime.TotalMilliseconds = nearestStartPrevShotChange * 1000;
comment = $"The in-cue is within {halfSecGapInFrames} frames after the shot change, snap the in-cue to the shot-change";
controller.AddRecord(p, fixedParagraph, comment);
}
}
if (nextStartShotChanges.Count > 0)
{
double nearestStartNextShotChange = nextStartShotChanges.Aggregate((x, y) => Math.Abs(x - p.StartTime.TotalSeconds) < Math.Abs(y - p.StartTime.TotalSeconds) ? x : y);
var gapToShotChange = SubtitleFormat.MillisecondsToFrames(nearestStartNextShotChange * 1000 - p.StartTime.TotalMilliseconds);
var threshold = (int)Math.Round(halfSecGapInFrames * 0.75, MidpointRounding.AwayFromZero);
if (gapToShotChange != 0 && gapToShotChange < halfSecGapInFrames)
{
if (gapToShotChange < threshold)
{
fixedParagraph.StartTime.TotalMilliseconds = nearestStartNextShotChange * 1000;
comment = $"The in-cue is 1-{threshold - 1} frames before the shot change, snap the in-cue to the shot change";
}
else
{
fixedParagraph.StartTime.TotalMilliseconds = nearestStartNextShotChange * 1000 - (1000.0 / controller.FrameRate * halfSecGapInFrames);
comment = $"The in-cue is {threshold}-{halfSecGapInFrames - 1} frames before the shot change, pull the in-cue to half a second ({halfSecGapInFrames} frames) before the shot-change";
}
controller.AddRecord(p, fixedParagraph, comment);
}
}
if (previousEndShotChanges.Count > 0)
{
double nearestEndPrevShotChange = previousEndShotChanges.Aggregate((x, y) => Math.Abs(x - p.EndTime.TotalSeconds) < Math.Abs(y - p.EndTime.TotalSeconds) ? x : y);
if (SubtitleFormat.MillisecondsToFrames(p.EndTime.TotalMilliseconds - nearestEndPrevShotChange * 1000) < halfSecGapInFrames)
{
fixedParagraph.EndTime.TotalMilliseconds = nearestEndPrevShotChange * 1000 - twoFramesGap;
comment = $"The out-cue is within {halfSecGapInFrames} frames after the shot change";
controller.AddRecord(p, fixedParagraph, comment);
}
}
if (nextEndShotChanges.Count > 0)
{
double nearestEndNextShotChange = nextEndShotChanges.Aggregate((x, y) => Math.Abs(x - p.EndTime.TotalSeconds) < Math.Abs(y - p.EndTime.TotalSeconds) ? x : y);
if (SubtitleFormat.MillisecondsToFrames(nearestEndNextShotChange * 1000 - p.EndTime.TotalMilliseconds) < halfSecGapInFrames &&
SubtitleFormat.MillisecondsToFrames(nearestEndNextShotChange * 1000 - p.EndTime.TotalMilliseconds) < 2)
{
fixedParagraph.EndTime.TotalMilliseconds = nearestEndNextShotChange * 1000 - twoFramesGap;
comment = $"The out-cue is within {halfSecGapInFrames} frames of the shot change";
controller.AddRecord(p, fixedParagraph, comment);
}
}
if (onShotChange > 0)
{
fixedParagraph.EndTime.TotalMilliseconds = onShotChange * 1000 - twoFramesGap;
comment = "The out-cue is on the shot change, respect the two-frame gap";
controller.AddRecord(p, fixedParagraph, comment);
}
}
}