[MPlayer-users] Mencoder questions

[D Richard Felker III]

On Tue, May 18, 2004 at 07:01:17AM +0200, Jacob Kolding wrote:
> On Sun, 2004-05-16 at 23:55, Loren Merritt wrote:
> > On Sun, 16 May 2004, Jacob Kolding wrote:
> > 
> > > I have some questions about mencoder, first can
> > > it be used to remove bframes from a xvid file?
> > 
> > Do you mean drop the b-frames without modifying the i- and p-frames?
> > No, mencoder's frame-dropping isn't that smart.
> 
> I don't know what i and p frames are, are they necessary?
> 
> > > and second how do I convert a divx file to xvid?
> > 
> > Why would you want to? DivX and XviD are both mpeg4 codecs, so the
> > compressed streams they generate are the same format.
> > (Actually, XviD uses a few features that DivX doesn't, but I don't know of
> > any programs that can play XviD but not DivX.)
> 
> The reason why I want to reencode the files is that I own a KiSS DivX
> XviD capable DVD player but most DivX files don't play properly, so
> I thought I'd try to reencode them and see if that fixes the problem.
> 
> A friend of mine mentioned that it seems that the player can't handle
> bframes (which I don't know what is) so that why I wanted to remove
> them.

You can't just remove them (well actually you can but the result would
be horrible). You have to reencode a file that doesn't use B frames
(or other features that your player doesn't support).

Rich