Video Frame by Frame seeking

问题:

Is there a way to step through a video file frame by frame? I've tried using a VideoView and I've had minor success. I can get the video the step through key frames but not individual frames. I figured this would be the default settings, especially with the way video compression works. Is there a way to override this default behavior or a configuration I can change?

回答1:

The default behaviour in stagefright media framework is always to seek to key frame. (As opposed to the earlier framework's - opencore whose default seeking behaviour was to seek to time.)

You cannot do frame by frame seeking by using the MediaPlayer API's provided by Android.

If you really want implement frame by frame seeking then you will have to use a 3rd party multimedia framework like FFMPEG or you will need to implement your own.

回答2:

Have you looked at MediaMetadataRetriever ? There you can use getFrameAtTime(long timeUs, int option) and return a Bitmap.

Depending of the use, maybe it's what you need.