[FFmpeg-user] Compress Raw AVI file to ffvhuff, and pass audio through as is

[James Board]

I've been using mencoder to convert an AVI file with a raw pixel code to
ffvhuff.  I used the 'avc copy' command-line option to pass the audio samples
through without encoding.

What is an equivalent command in ffmpeg to convert a raw AVI file to an AVI
file where the video is compressed with ffvhuff, and the audio is merely copied
to the output file?

Thank you.