Android是否支持将视频作为canvas drawImage（）方法的源？

Question

do you know if the video as a source for the canvas drawImage() method is supported on Android?

The goal is to display the video and to select one moment to take a picture of this moment in a frame (drawImage (video,0,0), return canvas)). Do you think it is doable?

Thanks!

Answer 1

There is an approach in Android that will return you a bitmap for a given point in a video, which may give you want you need (or needed as this is an old question!):

MediaMetadataRetriever ( https://developer.android.com/reference/android/media/MediaMetadataRetriever.html#getFrameAtTime%28long,%20int%29 )

getFrameAtTime

Added in API level 10

Bitmap getFrameAtTime (long timeUs, int option)

Call this method after setDataSource(). This method finds a representative frame close to the given time position by considering the given option if possible, and returns it as a bitmap. This is useful for generating a thumbnail for an input data source or just obtain and display a frame at the given time position.