[FFmpeg-user] Conrtolling the rate at which ffmpeg converts a file from one format to another

[RT mxa]

Hello everyone,

I am attempting to use ffmpeg as a standalone process which feeds output
through memory to my application (I want to avoid creation of an
intermediate file).
Is there any way to invoke ffmpeg with a set of command line arguments which
tell ffmpeg to convert till say it uses up 200MB and then wait till space
gets freed up by my process which will read the output of ffmpeg.

Any pointers will be appreciated.
Thanks