[MPlayer-users] Creating and playing MPEG stll images
comes at naic.edu
Mon Feb 6 18:19:29 CET 2006
On Sun, Feb 05, 2006 at 11:26:24PM -0500, John Brown wrote:
> >From: Philip Walden <pwaldenlinux at pacbell.net>
> >I found that mpeg1 is not valid unless it is 24 or 30 fps. You need to set
> >-ofps to something. So maybe mpeg2 has the same problem?
> Thanks for your reply.
> I did set the rate, using fps=30000/1001 as a parameter to -mf. Looking at
> your command line, I realized that I did not explicitly specifiy everything
> that is required for an SVCD-compliant MPEG. My modified command:
> /* added keyint=1 in -lavcopts and -ofps 30000/1001 */
> C:\DVD>mencoder mf://menu.jpg -mf type=jpeg:fps=30000/1001 -ovc lavc
> -lavcopts v
> =4/3 -of mpeg -mpegopts format=xsvcd -ofps 30000/1001 -aspect 4/3 -o
> This did not improve the situation either. Remember, though, that I burned
> a SuperVideo CD that worked using this mpeg, and I can view it in other
> players. I was just wondering if the MPEG was compliant, or whether the
> players were just tolerant.
> Anyway, I found this in the MPlayer Docs, in the Frequently Asked Questions
> (Chapter 4)
> >4.6. DVD playback
> >What about DVD navigation/menus?
> >MPlayer does not support DVD menus due to serious architectural
> >limitations that prevent proper > handling of still images and interactive
> So it seems that MPlayer cannot play MPEG still images. If I increase the
> number of frames by copying menu jpg to menu2.jpg, menu3.jpg (don't know if
> there is an easier way), I can view it in Mlayer, but I suppose that it is
> not an MPEG still mage anymore.
I can confirm that mplayer can not play an mpeg with a single image. If
the mpeg has n frames you will see the first n-2, the last two are not showed.
(Actually the sequence will be 1 2 3 ..... n-4 n-3 n-2 n-3)
So you need at least 3 frames in order to see one.
This limitation regards only mpeg. Avi are not affected.
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