Hello,
sometimes a small part of a movie (about 20-30 seconds) is repeated
after a commercial break. In order to find such overlapping regions,
I created this small patch.
First I mark the beginning and end of the commercial, select the last
frame before the commercial and start searching (Menu: View->Search) for
a duplicate picture after the end of the marked commercial. Now I have
an overlapping region to cut out in addition to the commercial.
Unfortunately, the search is pretty slow, so I restrict it to about one
minute (25 frames * 60 seconds). The search range can be set in the
settings file:
search_dups_range=1500
Regards, Olaf
diff --git a/src/dvbcut.cpp b/src/dvbcut.cpp
index fda4c7a..89570d2 100644
--- a/src/dvbcut.cpp
+++ b/src/dvbcut.cpp
@@ -1050,6 +1050,84 @@ void dvbcut::viewDifference()
updateimagedisplay();
}
+namespace {
+inline int square(int x)
+{
+ return x * x;
+}
+
+unsigned long calc_distance(QImage baseimg, QImage im)
+{
+ if (im.size() != baseimg.size())
+ im = im.scale(baseimg.size());
+
+ unsigned long distance = 0;
+ if (im.depth() == 32 && baseimg.depth() == 32)
+ for (int y = 0; y < baseimg.height(); ++y) {
+ QRgb *imd = (QRgb*) im.scanLine(y);
+ QRgb *bimd = (QRgb*) baseimg.scanLine(y);
+
+ for (int x = im.width(); x > 0; --x) {
+ int dist = square(qRed(*imd) - qRed(*bimd)) + square(qGreen(*imd) - qGreen(*bimd)) + square(qBlue(*imd) - qBlue(*bimd));
+ if (dist > 1000)
+ dist = 1000;
+
+ distance += dist;
+ ++imd;
+ ++bimd;
+ }
+ }
+
+ return distance;
+}
+
+int getNextEvent(const QListBox *eventlist, int picture)
+{
+ for (QListBoxItem *item = eventlist->firstItem(); item; item = item->next())
+ if (item->rtti() == EventListItem::RTTI()) {
+ EventListItem *eli = (EventListItem*)item;
+ if (eli->getpicture() > picture)
+ return eli->getpicture();
+ }
+
+ return picture + 1;
+}
+};
+
+void dvbcut::searchDuplicate()
+{
+ progressstatusbar psb(statusBar());
+ psb.print("Searching ...");
+ psb.setprogress(0);
+// dvbcutbusy busy(this);
+// busy.setbusy(true);
+ imageprovider imgp(*mpg);
+ QImage baseimg = imgp.getimage(curpic);
+ int pic = getNextEvent(eventlist, curpic);
+ gotoFrame(pic);
+ unsigned long min = calc_distance(baseimg, imgp.getimage(pic, true));
+ static const long n = settings().search_dups_range;
+ for (long i = 0; i < n; ++i) {
+ unsigned long d = calc_distance(baseimg, imgp.getimage(++pic, true));
+ if (d < min) {
+ min = d;
+ gotoFrame(pic);
+ }
+
+ psb.setprogress(i * 1000 / n);
+ if (psb.cancelled()) {
+ // FIXME
+ break;
+ }
+ }
+
+// busy.setbusy(false);
+ if (psb.cancelled()) {
+ // FIXME
+ return;
+ }
+}
+
void dvbcut::viewUnscaled()
{
@@ -2468,3 +2546,11 @@ void dvbcut::helpContentAction_activated()
tr("Help file %1 not available").arg(helpFile));
}
}
+
+void dvbcut::gotoFrame(int frameno)
+{
+ bool save = fine;
+ fine = true;
+ linslider->setValue(frameno);
+ fine = save;
+}
diff --git a/src/dvbcut.h b/src/dvbcut.h
index dd4aacc..076940e 100644
--- a/src/dvbcut.h
+++ b/src/dvbcut.h
@@ -165,6 +165,7 @@ public slots:
virtual void editConvert(int);
virtual void abouttoshoweditconvert();
virtual void viewDifference();
+ virtual void searchDuplicate();
virtual void viewUnscaled();
virtual void viewNormal();
virtual void zoomIn();
diff --git a/src/dvbcutbase.ui b/src/dvbcutbase.ui
index 2148f44..a08c8f9 100644
--- a/src/dvbcutbase.ui
+++ b/src/dvbcutbase.ui
@@ -470,6 +470,7 @@
<action name="viewNormalAction"/>
<action name="viewUnscaledAction"/>
<action name="viewDifferenceAction"/>
+ <action name="searchDuplicateAction"/>
<separator/>
<action name="zoomInAction"/>
<action name="zoomOutAction"/>
@@ -860,6 +861,14 @@
</action>
<action>
<property name="name">
+ <cstring>searchDuplicateAction</cstring>
+ </property>
+ <property name="text">
+ <string>Search duplicate of current picture</string>
+ </property>
+ </action>
+ <action>
+ <property name="name">
<cstring>viewFullSizeAction</cstring>
</property>
<property name="toggleAction">
@@ -1207,6 +1216,12 @@
<slot>viewDifference()</slot>
</connection>
<connection>
+ <sender>searchDuplicateAction</sender>
+ <signal>activated()</signal>
+ <receiver>dvbcutbase</receiver>
+ <slot>searchDuplicate()</slot>
+ </connection>
+ <connection>
<sender>viewNormalAction</sender>
<signal>activated()</signal>
<receiver>dvbcutbase</receiver>
@@ -1319,6 +1334,7 @@
<slot>viewNormal()</slot>
<slot>viewUnscaled()</slot>
<slot>viewDifference()</slot>
+ <slot>searchDuplicate()</slot>
<slot>fileExport()</slot>
<slot>audiotrackchosen(int)</slot>
<slot>loadrecentfile(int)</slot>
diff --git a/src/settings.cpp b/src/settings.cpp
index 30d1b9c..328d550 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -58,6 +58,7 @@
#define DVBCUT_DEFAULT_PIPE_LABEL \
"DVD-Video titleset (dvdauthor)"
#define DVBCUT_DEFAULT_PIPE_FORMAT (0)
+#define DVBCUT_DEFAULT_SEARCH_DUPS_RANGE 1500
/*
// SOME OTHER EXAMPLES for the settings file ~/.qt/dvbcut.sf.netrc
// (ok, for time consuming conversions one does not save any time, but it may be convenient...)
@@ -130,6 +131,7 @@ dvbcut_settings::load_settings() {
prjfilter = readEntry("/prjfilter", DVBCUT_DEFAULT_PRJFILTER);
loadfilter = readEntry("/loadfilter", DVBCUT_DEFAULT_LOADFILTER);
endGroup(); // filter
+ search_dups_range = readNumEntry("/search_dups_range", DVBCUT_DEFAULT_SEARCH_DUPS_RANGE);
}
else {
// old (unnumbered) config format
@@ -380,6 +382,7 @@ dvbcut_settings::save_settings() {
writeEntry("/threshold", chapter_threshold);
writeEntry("/minimum", chapter_minimum);
endGroup(); // auto chapters
+ writeEntry("/search_dups_range", search_dups_range);
}
// private settings variable
diff --git a/src/settings.h b/src/settings.h
index 8050731..ae7253a 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -85,7 +85,7 @@ public:
int chapter_tolerance;
double chapter_threshold;
int chapter_minimum;
-
+ int search_dups_range;
};
// access function
------------------------------------------------------------------------------
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