i'm interested in the 3gplibrary usage.
I have to extract frames from a video file (in 3gp or mp4 format) and save these images to file system and this lib seems to be helpful for me.
In specific i would use the ReadVideoFrame(TDes8& aBuffer, TBool& aKeyFrame, TUint& aTimeStampInMs,TUint& aTimeStampInTimescale) function of this lib but i have a question:
the first parameter of this function is the descriptor to store the video frames but the frames that are saved to this buffer are already decoded and represent an image that can be saved on file system or are coded data that have to be passed to the decoder?
If the frames are already dedoded data how can i create a jpg image from the buffer content?