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MaddoScientisto 2026-04-22 18:41:37 +02:00
commit c227fce036
2145 changed files with 399596 additions and 58 deletions
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decompiled-libs/www/acxent-videoj-1.0.0/org/jcodec/movtool/SetFPS.java Normal file
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package org.jcodec.movtool;
import java.io.File;
import org.jcodec.common.logging.Logger;
import org.jcodec.common.model.RationalLarge;
import org.jcodec.common.tools.MainUtils;
import org.jcodec.containers.mp4.boxes.MovieBox;
import org.jcodec.containers.mp4.boxes.MovieFragmentBox;
import org.jcodec.containers.mp4.boxes.TimeToSampleBox;
import org.jcodec.containers.mp4.boxes.TrakBox;
public class SetFPS {
private static final int MIN_TIMESCALE_ALLOWED = 25;
public static void main1(String[] args) throws Exception {
MainUtils.Cmd cmd = MainUtils.parseArguments(args, new MainUtils.Flag[0]);
if (cmd.argsLength() < 2) {
MainUtils.printHelpNoFlags("movie", "num:den");
System.exit(-1);
}
final RationalLarge newFPS = RationalLarge.parse(cmd.getArg(1));
new InplaceMP4Editor().modify(new File(cmd.getArg(0)), new MP4Edit() {
public void apply(MovieBox mov) {
TrakBox vt = mov.getVideoTrack();
TimeToSampleBox stts = vt.getStts();
TimeToSampleBox.TimeToSampleEntry[] entries = stts.getEntries();
long nSamples = 0L;
long totalDuration = 0L;
for (TimeToSampleBox.TimeToSampleEntry e : entries) {
nSamples += (long)e.getSampleCount();
totalDuration += (long)(e.getSampleCount() * e.getSampleDuration());
}
int newTimescale = (int)newFPS.multiply(new RationalLarge(totalDuration, nSamples)).scalarClip();
if (newTimescale >= 25) {
vt.setTimescale(newTimescale);
} else {
double mul = new RationalLarge((long)vt.getTimescale() * totalDuration, nSamples).divideBy(newFPS)
.scalar();
Logger.info("Applying multiplier to sample durations: " + mul);
for (TimeToSampleBox.TimeToSampleEntry e : entries)
e.setSampleDuration((int)((double)e.getSampleDuration() * mul * 100.0D));
vt.setTimescale(vt.getTimescale() * 100);
}
if (newTimescale != vt.getTimescale()) {
Logger.info("Changing timescale to: " + vt.getTimescale());
long newDuration = totalDuration * (long)mov.getTimescale() / (long)vt.getTimescale();
mov.setDuration(newDuration);
vt.setDuration(newDuration);
} else {
Logger.info("Already at " + newFPS.toString() + "fps, not changing.");
}
}
public void applyToFragment(MovieBox mov, MovieFragmentBox[] fragmentBox) {
throw new RuntimeException("Unsupported");
}
});
}
}