Investigate the GetThumbnail function.
For the latter, I would suggest using speech recognition instead of recording audio. Tap in a text field, tap the little microphone icon (lower left side of the keyboard), and talk. iOS will insert what you say into the field as text, rather than audio, which takes up a lot less space.
GetThumbnail did the job 1.5mb to 50k
Not able to get microphone icon to appear on iPhone keyboard entering data to text field
Will figure out.
thanks for your help