[英]How to add watermark on video using mp4parser in android?
我已经使用mp4parser成功地将录制的视频转换为“ out.h264”格式,还将音频转换为“ .AAC”格式。 现在,我想在录制的视频上实现“水印图像”。 mp4parser是否可以在视频上添加水印? 我也检查过GPUimages
。 但是无法在视频上添加效果,其示例仅显示图片效果。 所以我的问题是如何在视频上添加水印?
以下是我的音频视频代码:
File sdCard = Environment.getExternalStorageDirectory();
IsoFile isoFile = new IsoFile(videosPath);
TrackBox trackBox = (TrackBox) Path.getPath(isoFile, "/moov/trak/mdia/minf/stbl/stsd/avc1/../../../../../");
SampleList sl = new SampleList(trackBox);
File out = new File(sdCard + "/out.h264");
if (out.exists()) {
out.delete();
}
FileChannel fc = new RandomAccessFile(out, "rw").getChannel();
ByteBuffer separator = ByteBuffer.wrap(new byte[] { 0, 0, 0, 1 });
fc.write((ByteBuffer) separator.rewind());
// Write SPS
fc.write(ByteBuffer.wrap(((AvcConfigurationBox) Path.getPath(trackBox, "mdia/minf/stbl/stsd/avc1/avcC")).getSequenceParameterSets().get(0)));
// Warning:
// There might be more than one SPS (I've never seen that but it is possible)
fc.write((ByteBuffer) separator.rewind());
// Write PPS
fc.write(ByteBuffer.wrap(((AvcConfigurationBox) Path.getPath(trackBox, "mdia/minf/stbl/stsd/avc1/avcC")).getPictureParameterSets().get(0)));
// Warning:
// There might be more than one PPS (I've never seen that but it is possible)
int lengthSize = ((AvcConfigurationBox) Path.getPath(trackBox, "mdia/minf/stbl/stsd/avc1/avcC")).getLengthSizeMinusOne() + 1;
for (Sample sample : sl) {
ByteBuffer bb = sample.asByteBuffer();
while (bb.remaining() > 0) {
int length = (int) IsoTypeReaderVariable.read(bb, lengthSize);
fc.write((ByteBuffer) separator.rewind());
fc.write((ByteBuffer) bb.slice().limit(length));
bb.position(bb.position() + length);
}
}
fc.close();
Log.e(TAG, "Converted Path: " + out.getAbsolutePath() + " Start Time Convert: " + new Date());
H264TrackImpl h264Track = new H264TrackImpl(new FileDataSourceImpl(out.getAbsoluteFile()));
AACTrackImpl aacTrack = new AACTrackImpl(new FileDataSourceImpl(audioPath));
CroppedTrack aacTrackShort = new CroppedTrack(aacTrack, 1, aacTrack.getSamples().size());
// MP3TrackImpl accTrackImpl = new MP3TrackImpl(new FileDataSourceImpl(audioPath));
Movie movie = new Movie();
movie.addTrack(h264Track);
movie.addTrack(aacTrackShort);
Container mp4file = new DefaultMp4Builder().build(movie);
File output = new File(sdCard + "/output_KanAK.mp4");
if (output.exists()) {
output.delete();
}
@SuppressWarnings("resource")
FileChannel fc1 = new RandomAccessFile(output, "rw").getChannel();
mp4file.writeContainer(fc1);
fc1.close();
Bitmap largeIcon = BitmapFactory.decodeResource(getResources(), R.drawable.velfee);
gpuImage.saveToPictures(largeIcon, output, 100, new OnPictureSavedListener() {
@Override
public void onPictureSaved(Uri uri) {
// TODO Auto-generated method stub
Log.e(TAG, "Picture save Uri");
GPUImageDifferenceBlendFilter filter;
filter.setBitmap(BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher));
}
});
任何帮助,将不胜感激!! 提前致谢。
您可以使用github页面中的字幕示例将String用作水印。 将限制设置为您自己的限制,但是您当然不能使用图像。
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