android - 如何以编程方式在android中将视频转换为gif

Question

<分区>

Answer 1

我的建议是使用 MediaMetadataRetriever并调用 getFrameAtTime() 方法来检索要提取的帧:

// Get your video file
File myVideo = new File
         (Environment.getExternalStorageDirectory().getAbsolutePath(),
                                                               "YOUR_FILE.mp4");
// URI to your video file
Uri myVideoUri = Uri.parse(myVideo.toString());

// MediaMetadataRetriever instance
MediaMetadataRetriever mmRetriever = new MediaMetadataRetriever();
mmRetriever.setDataSource(myVideo.getAbsolutePath());

// Array list to hold your frames
ArrayList<Bitmap> frames = new ArrayList<Bitmap>();

//Create a new Media Player
MediaPlayer mp = MediaPlayer.create(getBaseContext(), myVideoUri);

// Some kind of iteration to retrieve the frames and add it to Array list
Bitmap bitmap = mmRetriever.getFrameAtTime(TIME IN MICROSECONDS);
frames.add(bitmap);

然后创建一个Drawable Animation以编程方式:

AnimationDrawable animatedGIF = new AnimationDrawable();

animationDrawable.addFrame("FIRST FRAME", 50);
animationDrawable.addFrame("SECOND FRAME", 50);
...
animationDrawable.addFrame("LAST FRAME ", 50);