VideoFrame.mapId

bool mapId(out  gstvideo.video_frame.VideoFrame frame,  gstvideo.video_info.VideoInfo info,  gst.buffer.Buffer buffer,  int  id,  gst.types.MapFlags flags)

Use info and buffer to fill in the values of frame with the video frame information of frame id.

When id is -1, the default frame is mapped. When id != -1, this function will return false when there is no GstVideoMeta with that id.

All video planes of buffer will be mapped and the pointers will be set in frame->data.

Parameters

`frame`	pointer to #GstVideoFrame
`info`	a #GstVideoInfo
`buffer`	the buffer to map
`id`	the frame id to map
`flags`	#GstMapFlags

Returns

true on success.