[MPlayer-users] mencoder -ovc copy produces a "null codec" footprint?

[Yang]

yeah, by "copy" I mean I did "mencoder -ovc copy"

On Sat, Dec 27, 2014 at 7:36 AM, Reimar Döffinger <Reimar.Doeffinger at gmx.de>
wrote:

> On Fri, Dec 26, 2014 at 12:17:44PM -0800, Yang wrote:
> > I copied my DVDs to my DLNA server, so I could stream them on my home
> > network.
> >
> > but the client VLC (as well as xbox ) fails to recognize the codec used
> by
> > the file, saying "can't find codec for format '  ' ".
> >
> >
> > while if I use some compression codec in mencoder, such as mpeg4, it
> seems
> > that the code footprint is written in the file, so vlc is able to see it.
> >
> >
> >
> > how could I fix this, some way to manually "decorate" the existing file
> > with a codec signature?
>
> Not sure what you did to "copy" the DVDs, it doesn't sound like any of
> the recommend ways or there's a bug in the DLNA server.
> In short you should use mplayer -dumpstream, not mencoder with -ovc copy.
> Or some of the many other tools like vobcopy.
> Alternatively, maybe you'd want the -ffourcc option?
> Probably something like -ffourcc "mpg2" or so.
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