FFmpeg error - "at least one output file must be specified" [closed]

Question

ffmpeg -ss 0 -i rawvid.flv -t 33 -vf scale=640x480 -b:21504 test.mpg

When run, this returns "At least one output file must be specified", what am I missing?

PS: FFmpeg works fine, and if I remove all of the flags in the statement above, it works.

Answer 1

The correct command would be:

ffmpeg -ss 0 -i in.mp4 -filter:v scale=640:480 -b:v 21504 -t 5 test.mpg

• The -t option should come just before the output specifier.

• The scale output format is w:h (and not wxh)

• -b:21504 is syntactically wrong, you're missing the :v.