Hello I am working with some avi captured from VHS... and I have two questions:

1) Is there some software that allows me mux/demux avi files (I want edit the audio to take off some hiss...)??
2) I applied VirtualDub filter to this file... and in the preview looked really well, but in the moment I want save it, the file is soo huge, for 1 minute is probably 4GB avi!!!. Do you know if is a problem or is common and how can I save it???. I only applied 4 filters I think... I don't know if the Avi result file is proportional to the amount of filters applied.

Thanks again,