MPlayer - Invalid and inefficient vfw-avi packed B frames detected

andrew clarke mail at
Mon May 24 10:22:29 UTC 2010

On Sat 2010-05-22 23:06:11 UTC+0900, Byung-Hee HWANG (bh at wrote:

> Recently, i upgraded packages all by csup(fetch: 2010-05-14)  +
> portupgrade. I did mplayer, too. After all that, when i launched mplayer
> with some avi movie file, mplayer said "Invalid and inefficient vfw-avi
> packed B frames detected".

I don't use MPlayer in FreeBSD but I've seen this with recent Linux &
Windows builds, but only with some AVI files (that were not made by
me).  It was only a warning message and the videos continued to play
without any noticable errors.

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