[BedaZzle]

При смещении субтитров в SW необходимо задавать дельту, на которую будут сдвинуты субтитры. Иногда удобнее смещать субтитры по заданному точному времени первого субтитра в выделенном блоке.
Приведённый скрипт выполняет это.

// ShiftToTime. Made by Bedazzle.

program ShiftToTime;

// -----------------------------------------------------------------------------

var
  Form	  : TForm;
  pPanel	: TPanel;
  btnShift  : TButton;
  btnCancel : TButton;
  lbLabel   : TLabel;
  edEdit	: TEdit;

// -----------------------------------------------------------------------------

// -----------------------------------------------------------------------------

function TimeIsValid(t: string): boolean;
begin
  // time must be in 00:00:00,000 format

  if ((copy(t, 1,1)  >= '0') and (copy(t, 1,1) <=  '9')) then
  if ((copy(t, 2,1)  >= '0') and (copy(t, 2,1) <=  '9')) then
  if (copy(t,  3,1)  =  ':') then
  if ((copy(t, 4,1)  >= '0') and (copy(t, 4,1) <=  '5')) then
  if ((copy(t, 5,1)  >= '0') and (copy(t, 5,1) <=  '9')) then
  if (copy(t,  6,1)  =  ':') then
  if ((copy(t, 7,1)  >= '0') and (copy(t, 7,1) <=  '5')) then
  if ((copy(t, 8,1)  >= '0') and (copy(t, 8,1) <=  '9')) then
  if (copy(t,  9,1)  =  ',') then
  if ((copy(t, 10,1) >= '0') and (copy(t, 10,1) <= '9')) then
  if ((copy(t, 11,1) >= '0') and (copy(t, 11,1) <= '9')) then
  if ((copy(t, 12,1) >= '0') and (copy(t, 12,1) <= '9')) then
	 result := TRUE
  else
	 result := FALSE;
end;

// -----------------------------------------------------------------------------

function TimeToInt(t: string): integer;
begin
  result := StrToInt(copy(t, 1, 2)) * 1000 * 60 * 60 +
			StrToInt(copy(t, 4, 2)) * 1000 * 60 +
			StrToInt(copy(t, 7, 2)) * 1000 +
			StrToInt(copy(t, 10, 3));
end;

// -----------------------------------------------------------------------------

function IntToTime(t: integer): string;
var h, m, s: integer;
	sh, sm, ss, sms: string;
begin
  h := trunc(((t/1000)/60)/60);
  t := t - h*1000*60*60;
  m := trunc((t/1000)/60);
  t := t - m*1000*60;
  s := trunc(t/1000);
  t := t - s*1000;

  if h<10 then sh := '0'+ IntToStr(h)
  else sh := IntToStr(h);

  if m<10 then sm := '0'+ IntToStr(m)
  else sm := IntToStr(m);

  if s<10 then ss := '0'+ IntToStr(s)
  else ss := IntToStr(s);

  if t<10 then sms := '00'+ IntToStr(t)
  else
  if t<100 then sms := '0'+ IntToStr(t)
  else sms := IntToStr(t);

  result := sh+':'+sm+':'+ss+','+sms;
end;

// -----------------------------------------------------------------------------

procedure btnShiftClick(Sender: TObject);
var flag  : boolean;
	disp  : integer;
	i	 : integer;
	n	 : integer;
	init  : integer;
	final : integer;
begin
  flag := FALSE;

  if (TimeIsValid(edEdit.Text) = FALSE) then
  begin
	 MsgBox('Invalid time!'+ ''#13''#10 + 'Must be in 00:00:00,000 format!', '&Ok', '', '', $20);
	 Form.ModalResult := 0;
  end
  else
  begin
	 disp := TimeToInt(edEdit.Text);

	 n := GetSubtitleCount;


	 // cycle through all subtitles

	 for i := 0 to n-1 do
	 begin
		// search for first selected subtitle

		if ((flag = FALSE) and (IsSubtitleSelected(i) = TRUE)) then
		begin
		   flag  := TRUE;
		   init  := GetSubtitleInitialTime(i);   
		   final := GetSubtitleFinalTime(i);
		   disp  := disp - init;
		end;

		// shift current subtitle

		if (flag = TRUE) then
		begin
		   init  := GetSubtitleInitialTime(i);   
		   final := GetSubtitleFinalTime(i);
		   SetSubtitleInitialTime(i, init+disp);
		   SetSubtitleFinalTime(i, final+disp);
		end;
	 end;

	 if (flag = FALSE) then
		MsgBox('You must select subtitle for shift!', '&Ok', '', '', $20);
  end;

end;

// -----------------------------------------------------------------------------
//
// main code
//
// -----------------------------------------------------------------------------
begin
  Form := TForm.Create(Application);
  try
	Form.Font.Name   := 'MS Sans Serif';
	Form.Font.Height := 8;
	Form.Caption	 := 'Shift to time';
	Form.BorderStyle := bsDialog;
	Form.BorderIcons := [];
	Form.Position	:= poScreenCenter;
	Form.Width	   := 180;
	Form.Height	  := 112;

	pPanel		:= TPanel.Create(Application);
	pPanel.Left   := 4;
	pPanel.Top	:= 4;
	pPanel.Height := 41;
	pPanel.Width  := 165;
	pPanel.Parent := Form;

	lbLabel		 := TLabel.Create(Application);
	lbLabel.Parent  := pPanel;
	lbLabel.Left	:= 8;
	lbLabel.Top	 := 12;
	lbLabel.Width   := 165;
	lbLabel.Height  := 41;
	lbLabel.Caption := 'Desired time';

	edEdit		:= TEdit.Create(Application);
	edEdit.Parent := pPanel;
	edEdit.Left   := 80;
	edEdit.Top	:= 12;
	edEdit.Width  := 77;
	edEdit.Height := 21;
	edEdit.Text   := '00:00:00,000';

	btnShift			 := TButton.Create(Application);
	btnShift.Parent	  := Form;
	btnShift.Default	 := True;
	btnShift.Caption	 := '&Shift';
	btnShift.ModalResult := mrOk;
	btnShift.onclick	 := @btnShiftClick;
	btnShift.Top		 := 56;
	btnShift.Left		:= 8;
	btnShift.Width	   := 75;
	btnShift.Height	  := 25;
	btnShift.Font.Style  := btnShift.Font.Style + [fsBold];

	btnCancel			 := TButton.Create(Application);
	btnCancel.Parent	  := Form;
	btnCancel.Caption	 := '&Cancel';
	btnCancel.ModalResult := mrCancel;
	btnCancel.Top		 := 56;
	btnCancel.Left		:= 88;
	btnCancel.Width	   := 75;
	btnCancel.Height	  := 25;

	Form.ShowModal;

  finally
	btnCancel.Free;
	btnShift.Free;
	edEdit.Free;
	lbLabel.Free;
	pPanel.Free;
	Form.Free;
  end;
end.