How to best convert Flash compatible mp4 files with FFMPEG?

Question

I am trying to convert different files to a flash compatible .mp4 file with ffmpeg, but I can\'t seem to get it to work. Of course the objective is to get the great

Answer 1

FLV and MP4 are media containers.

MPEG-4 part 2 and H.264 are video codecs. (and H.264 gives much better quality)

libx264 is an encoder for H.264 codec.

mpeg4 is an encoder for MPEG-4 part 2 codec.

Flash can only play video codec H.264 in FLV container.

So the params should be like that:

-f flv -vcodec libx264