44 lines
1.8 KiB
Java
44 lines
1.8 KiB
Java
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package org.jcodec.movtool;
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import java.io.File;
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import org.jcodec.common.model.Rational;
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import org.jcodec.common.model.Size;
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import org.jcodec.containers.mp4.BoxUtil;
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import org.jcodec.containers.mp4.boxes.Box;
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import org.jcodec.containers.mp4.boxes.MovieBox;
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import org.jcodec.containers.mp4.boxes.MovieFragmentBox;
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import org.jcodec.containers.mp4.boxes.NodeBox;
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import org.jcodec.containers.mp4.boxes.SampleDescriptionBox;
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import org.jcodec.containers.mp4.boxes.TrakBox;
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import org.jcodec.containers.mp4.boxes.VideoSampleEntry;
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public class SetPAR {
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public static void main1(String[] args) throws Exception {
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if (args.length < 2) {
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System.out.println("Syntax: setpasp <movie> <num:den>");
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System.exit(-1);
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}
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final Rational newPAR = Rational.parse(args[1]);
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new InplaceMP4Editor().modify(new File(args[0]), new MP4Edit() {
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public void apply(MovieBox mov) {
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TrakBox vt = mov.getVideoTrack();
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vt.setPAR(newPAR);
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Box box = NodeBox.<SampleDescriptionBox>findFirstPath(vt, SampleDescriptionBox.class, Box.path("mdia.minf.stbl.stsd")).getBoxes()
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.get(0);
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if (box != null && box instanceof VideoSampleEntry) {
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VideoSampleEntry vs = (VideoSampleEntry)box;
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int codedWidth = vs.getWidth();
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int codedHeight = vs.getHeight();
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int displayWidth = codedWidth * newPAR.getNum() / newPAR.getDen();
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vt.getTrackHeader().setWidth((float)displayWidth);
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if (BoxUtil.containsBox(vt, "tapt"))
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vt.setAperture(new Size(codedWidth, codedHeight), new Size(displayWidth, codedHeight));
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}
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}
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public void applyToFragment(MovieBox mov, MovieFragmentBox[] fragmentBox) {
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throw new RuntimeException("Unsupported");
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}
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});
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}
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}
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