鉴于视频网址(例如:www.example.com/video.mp4),我如何以编程方式保存视频的短片段(例如:5秒00:00:10 - 00:00:15)在一个Android应用程序到手机上?
目前,这就是我所拥有的 - 但这会将整个视频从网址保存到设备中。看来我需要使用MediaExtractor和MediaMuxer。
URL url = new URL(http_url_path);
URLConnection ucon = url.openConnection();
// Define InputStreams to read from the URLConnection.
// uses 5KB download buffer
InputStream is = ucon.getInputStream();
BufferedInputStream in = new BufferedInputStream(is, BUFFER_SIZE);
FileOutputStream out = new FileOutputStream(file);
byte[] buff = new byte[BUFFER_SIZE];
int len = 0;
while ((len = in.read(buff)) != -1) {
out.write(buff, 0, len);
}
答案 0 :(得分:1)
依靠isoviewer-1.0-RC-27。
public static double[] startTrim(File src, File dst, int startMs, int endMs) throws IOException {
Movie movie = MovieCreator.build(src.getAbsolutePath());
List<Track> tracks = movie.getTracks();
movie.setTracks(new LinkedList<Track>());
double startTime = startMs/1000;
double endTime = endMs/1000;
boolean timeCorrected = false;
// Here we try to find a track that has sync samples. Since we can only start decoding
// at such a sample we SHOULD make sure that the start of the new fragment is exactly
// such a frame
for (Track track : tracks) {
if (track.getSyncSamples() != null && track.getSyncSamples().length > 0) {
if (timeCorrected) {
throw new RuntimeException("The startTime has already been corrected by another track with SyncSample. Not Supported.");
}
//false,Short interception;true,Long interception
startTime = correctTimeToSyncSample(track, startTime, true);
endTime = correctTimeToSyncSample(track, endTime, false);
timeCorrected = true;
}
}
int x = 0;
for (Track track : tracks) {
long currentSample = 0;
double currentTime = 0;
long startSample = -1;
long endSample = -1;
x++;
for (int i = 0; i < track.getDecodingTimeEntries().size(); i++) {
TimeToSampleBox.Entry entry = track.getDecodingTimeEntries().get(i);
for (int j = 0; j < entry.getCount(); j++) {
// entry.getDelta() is the amount of time the current sample covers.
if (currentTime <= startTime) {
// current sample is still before the new starttime
startSample = currentSample;
}
if (currentTime <= endTime) {
// current sample is after the new start time and still before the new endtime
endSample = currentSample;
} else {
// current sample is after the end of the cropped video
break;
}
currentTime += (double) entry.getDelta() / (double) track.getTrackMetaData().getTimescale();
currentSample++;
}
}
movie.addTrack(new CroppedTrack(track, startSample, endSample));
break;
}
Container container = new DefaultMp4Builder().build(movie);
if (!dst.exists()) {
dst.createNewFile();
}
FileOutputStream fos = new FileOutputStream(dst);
FileChannel fc = fos.getChannel();
container.writeContainer(fc);
fc.close();
fos.close();
double[] doubleArray = new double[2] ;
doubleArray[0] = startTime;
doubleArray[1] = endTime;
return doubleArray;
}
答案 1 :(得分:0)
:D或您可以轻松使用本网站:D只需使用意图发送您想要的链接